Raid 1 for media backup

I am thinking of setting up two Fantom 500GB FW as a mirrored raid on my mac mini. I am strictly storing my Itunes media (music, movies, etc) on the drives. Because I'm using a mini I have to daisy chain the two drives by firewire (the mini only has one FW port). Is this a good idea or should I just periodically backup the data?

Although your media collection is precious, it doesn't require fault-tolerance, nor super high speed connections. the disadvantage in making a raid with external drives is that they must all be on at once.
plus, USB is probably not the best option for a long-term raid.
your best bet is two drives, one for your media and regular usage, and the other for BACKING UP your media (and system) regularly. The advantage here is that the backup drive can be kept off-site (or in a fire-proof safe) until needed.

Similar Messages

Not enough space on PC for media backup for ios 5.0 upgrade. Can it be config to use external 1T drive, rather than C: drive?

We have iPhone 4 and 3GS, iTouch and Nano.
The PC has about 3GB on the C: drive available, and I have an external USB connected 1T drive which is just about empty.
Can backup / sync functions be changed to use the external drive?
i-device backups and media files have taken over much of my C: drive space.
The iTouch upgrade to ios 5 is stopped because the media would be lost due to insufficient C: drive space. (Requires 3.5GB)

Move all of your media files to the external hard drive, then delete the information on your C: drive. Take a look at this link for instructions. http://support.apple.com/kb/HT1364

RAID for offsite backup?

Hello! My question is not specific to Xserve, but the OSX software RAID provided by Disk Utility. I posted on the 10.6.2 installation and setup board, but was recommended that I post here instead. So here goes...
I'm planning to use 2 external drives with Time Machine. But I only plan to keep one of them always connected to my iMac and the other stored somewhere safe (connecting periodically to sync up). The reasons being the usual ones for an offsite backup. And need I say that one of my computers has also been the unfortunate victim of a lightning strike? Ouch!
So instead of having to change the target drive in TM every time, I was hoping to set up a mirrored RAID using Disk Utilities. But I would only keep one drive connected at all times, while the other would be connected periodically to sync up.
Is this doable? Would the second drive automatically mirror the first one when I connect it? Would I keep getting warnings/errors from OSX that the other drive isn't connected? Appreciate your opinions on this. Thanks!

Don't go there. Seriously.
Breaking a mirror should never be considered part of your normal workflow, but that's precisely what you're proposing here - periodically breaking the mirror to take one of the copies off-site.
It might not bring you seven years' bad luck but it is asking for trouble.
IMHO your best bet is to periodically clone the Time Machine disk to the second disk using Disk Utility.app, asr or any of the numerous disk clone apps out there (Carbon Copy Cloner, Synchronize Pro, etc.).
In this way Time Machine can continually backup to its own disk and you take periodic snapshots of that disk on your own schedule. Don't try to get Time Machine to backup to two disks (either alternately or via mirroring).

Various network setups for media serving and backups

Are there any good sites, blog posts, etc that show different home network configurations with a Time Capsule, external HDs and Macs for handling backups and media serving? Right now I have a simple Setup where my TC backs up my MBP. I also have a couple externals HDs w a lot of music and video that's not in my iTunes library on the MBP, the HD of which is at capacity. I know I want to be able to easily access all of that content on my MBP, AppleTV, iPhone, iPad. I also want to have a good backup solution (possibly even a backup of the backup for redundancy). I just don't know the simplest way to do it and haven't found a good resource to see the alternatives and/or pros/cons of different configurations. Any suggestions would be greatly appreciated!

This is as I posted a Self help forum the only BT presence are the forum moderators your very likely to get help from other forum users it is just a matter of waiting until some one with gaming knowledge reads your post
If you want to say thanks for a helpful answer,please click on the Ratings star on the left-hand side If the reply answers your question then please mark as ’Mark as Accepted Solution’

Hello I bought a G-Raid GR4 4000 4 TB and used it for a backup with my new Imac27. Now this is all I get. "Time Machine couldn't complete the backup to "G-RAID". to complete backup. An error occurred while creating the backup folder.

Hello I bought a G-Raid GR4 4000 4 TB and used it for a backup with my new Imac27. Now this is all I get. "Time Machine couldn’t complete the backup to “G-RAID”. to complete backup. An error occurred while creating the backup folder."
Any idea what I should do?

If you have more than one user account, these instructions must be carried out as an administrator.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Console in the icon grid.
Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select
View ▹ Show Log List
from the menu bar.
Enter the word "Starting" (without the quotes) in the String Matching text field. You should now see log messages with the words "Starting * backup," where * represents any of the words "automatic," "manual," or "standard." Note the timestamp of the last such message. Clear the text field and scroll back in the log to that time. Select the messages timestamped from then until the end of the backup, or the end of the log if that's not clear. Copy them (command-C) to the Clipboard. Paste (command-V) into a reply to this message.
If all you see are messages that contain the word "Starting," you didn't clear the search box.
If there are runs of repeated messages, post only one example of each. Don't post many repetitions of the same message.
When posting a log extract, be selective. Don't post more than is requested.
Please do not indiscriminately dump thousands of lines from the log into this discussion.
Some personal information, such as the names of your files, may be included — anonymize before posting.

Two Drive Raid 0 vs. Two Drives for Media

I understand that for scratch disks you want the fastest and largest drive, so raid 0 would probably be great for a scratch disc.
How about two media disks at 7200rpm rather than raid 0 of the same two drives? Two things to consider reliability and speed.   The idea is to duplicate the footage to both drives and import both as separate bins into premiere and on the timeline go back and forth between the two drive to not stress a single drive. Is this a good possibility or better to put them into raid 0.
Lets look at these possibilities:
1.     2 sata drives in raid 0 (for media, including audio/music and animations/motion graphics)
2.     2 sata drives in raid 0, and a 3rd drive for audio and motion graphics.
3.     2 sata drives for media (no raid), a 3rd for audio and motion graphics

The idea is to duplicate the footage to both drives and import both as separate bins into premiere and on the timeline go back and forth between the two drive to not stress a single drive. Is this a good possibility or better to put them into raid 0.
Using disks individually is half the performance at double the headache (of managing the media spread over two drive letters), with one possible benefit of a lesser chance of a full data loss. I'd vouch for RAID0 as long as there is a copy of the source files somewhere else.

Raid 0 for media or previews? Using DSLR footage with Avid codec Sequence for smart rendering

I am on a PC currently using raid0 for media (4x 7200rp drives, read/write at 600) and exporting (no previews) to my sas 15k rpm (read/write about 180) previews/render drive.
I want to use avid codec for my sequence settings, will be doing smart rendering and exporting preview files for quicker exports.
My question, should I export to my raid0 since I will be exporting previews? Or is it better to keep the same setup and just add an export drive?

Either would work but since the Media array is so much faster than the Render drive, the export times probably wont change much exporting to the Render drive.
Eric
ADK

I have the G Drive 1 TB (GEN4 1TB) external drive purchased in 2010. I need to connect to my new MacBook Pro. I'm using the external drive for media storage of my video editing projects. Will a 800fw to thunderbolt adapter cable work?

I have the G Drive 1 TB (GEN4 1TB) external drive purchased in 2010. I need to connect to my new MacBook Pro. I'm using the external drive for media storage of my video editing projects. Will a 800fw to thunderbolt adapter cable work? I understand that using a USB port connection is not fast enough for video editing. I read somewhere the G Drives don't connect well to MacBook Pro.
thanks
larry

I doubt this can be relocated or moved so you might want to just repost in the macbook pro area.
MacBook Pro
https://discussions.apple.com/community/notebooks/macbook_pro
https://discussions.apple.com/community/mac_os?view=discussions
Can you afford a new Thunderbolt case and cable? any case with FW800 is going to be slow 72MB/sec and less, and any new 1TB drive is capable of 75MB/s minimum up to 125MB/sec.
Thunderbolt storage can of course when setup properly reach 100's of MB higher using multiple drives.
Use what you have for a system backup or for secondary backup storage.
you might be able to take the drive - most cases allow you to open and swap drives - and use this:
G-Technology 1TB G-DRIVE mini High-Speed Portable Hard Drive
or this:
http://store.apple.com/us/product/HB137VC/A/g-technology-4tb-g-raid-professional -high-performance-dual-drive-hard-drive?fnode=5f

RAID for Consumer PCs

If you have an interest in using RAID, then the MS Word document attached to this post may be useful information. Scroll all the way to the bottom for the attachment.
RAID for Consumer PCs
Table of Contents
RAID
RAID 0
RAID 1
RAID 5
RAID 10 (0+1)
INTEL Controller Support for Different RAID Configurations
Background Information for Creating a RAID configuration.
Considerations:
Performance comparisons
Creating a RAID 0 Array
Creating a RAID 1 Array
Creating a RAID 5 Array
Creating a RAID 10 (0+1) Array
Conversion from RAID 0 to RAID 5
RAID 0 to RAID 5 Observations
Other RAID Migrations
*************DISCLAIMER***********
RAID
RAID is an acronym for Redundant Array of Inexpensive Disks and also commonly called Redundant Array of Independent Disks. A RAID array is created when one or more hard disks or one or more solid state disks (SSD) are combined to form a logical volume using one of several different configurations. Consumer level PCs typically use RAID 0, RAID 1, RAID 5 and occasionally RAID 10 (0+1). The RAID configuration choice is dependent on the requirements for redundancy, speed and capacity. The choice of a RAID configuration will be a compromise between speed, redundancy, capacity and cost. The different RAID configuration options can be restricted by hardware limitations.
RAID 0
A RAID 0 volume is created when 2 hard disks are used and then data is spanned or striped across the different hard disks. The process of spanning data across different hard disks is also called scatter loading. By spreading data across multiple hard disks, a significant performance improvement can be gained. However, should one of the hard disks fail, then the entire RAID 0 configuration becomes unusable. A RAID 0 volume combines the capacity of the hard drives being used in the configuration.
RAID 1
A RAID 1 configuration is created when 2 hard disks are used and then data on hard drive 1 is replicated to hard drive 2. The process is also called data mirroring. This configuration provides for redundancy in the event of a single hard drive failure but at the expensive of a degradation to write performance as data has to be written to multiple hard drives. Since the data is being replicated between two volumes the overall capacity is limited to that of one hard drive.
RAID 5
A RAID 5 configuration is similar to a RAID 0 array except RAID 5 deploys distributed parity also referred to as checksum data. Blocks of data are stripped across three or more hard drives and each hard drive contains block level recreation data (parity). In the event of a hard drive failure, parity will allow for the data to be accessed through a dynamic data creation process. The downside to the dynamic data creation process is a reduction in performance until the failing hard drive can be replaced. RAID 5 performs best for supporting read accesses as write operations will be slower while the parity blocks are being updated. Parity data does consume disk space. A three hard drive RAID 5 array will have about the same total data capacity as a two hard drive RAID 0 array.
RAID 10 (0+1)
A RAID 10 configuration also called RAID 0+1 can be implemented in two different methods depending on the hardware being used. The below left configuration is a striped RAID 1 array being replicated and the below right configuration is a RAID 0 array being replicated. A RAID 10 configuration can provide a RAID 0 performance level even with the loss of one hard disk. The downside to RAID 10 is the reduced configuration capacity.
INTEL Controller Support for Different RAID Configurations.
The RAID configurations used in this document are based on the INTEL SATA controller.
See the below table.
NOTE: Even though your system board may have the appropriate Intel controller,
not all system boards will provide RAID functionality.
Background Information for Creating a RAID configuration.
You can create a RAID configuration provided that:
The PC cabinet can accommodate additional hard drive(s) if needed.
The system board has the necessary open SATA port(s) if needed.
A SATA controller that can support the desired RAID configuration.
You can determine the status of your RAID configuration by using the Intel Rapid Storage Technology (IRST) software. If you don’t have this software on your PC then you can download IRST from the Intel web site. I recommend that you use the latest version available from Intel. Background information can be obtained from the IRST User Guide. When you launch IRST, the help topics are an excellent source of information. You can access IRST by going into the Control Panel and select Intel Rapid Storage Technology. You can also access IRST from the lower right Task Bar location. IRST should resemble a hard drive icon and normally it has a green check mark. By default IRST is set as delayed startup so don’t expect to see it active right after boot up. The Intel images being used in this document are from IRST version 11.1.0.1006.
If the SATA controller in your PC is not set to RAID then read this Microsoft article if you are running VISTA or Windows 7. You need to run the MrFixIT script before you reboot your PC in the bios and make the SATA controller mode change to RAID. The script will then allow Windows to choose the correct driver when you reboot your PC. If you plan on using a boot drive image restore then be sure to run the script just prior to making taking your image backup. That way your backup image is set to allow Windows to choose the correct SATA driver.
Before creating any RAID configuration, always make backups of your data and image the boot hard disk to external media such as an USB drive. Additionally, be sure that your imaging product boot disk is functional, particularly if the PC’s boot hard disk is part of the RAID configuration. Its best to use a commercial hard disk imaging product as support and functionality is generally better than the “freebie” software.
Be sure that your PC is running the latest available BIOS. BIOS updates are used to update the Intel ROM firmware. Additionally, check for hard drive and SSD firmware updates.
Summary of preparation steps in priority order:
Backup your data.
Test out your recovery and restore procedures.
Update the following: BIOS, hard drive firmware, SSD firmware
Update IRST
Execute the Microsoft MrFixIt if your PC is not set to RAID mode in the bios.
Create an image of your boot hard drive.
Considerations:
After replacing a failed hard drive, don’t expect the rebuild process to be fast. All of the data that existed on the failed hard drive must be either regenerated using parity data or replicated to the new hard drive.
I recommend that you use an uninterruptable power supply (UPS) when using RAID 5. Cached write data needs to be written to hard drive in the event of a power failure to avoid the loss of data. You might want to consider disabling write back cache if you are not using an UPS. There is a performance reduction by doing so at the expense of improving data integrity.
If you need a RAID array over 2 TB then your PC needs: UEFI bios, 64 bit operating system, GPT formated hard drives. Review this Microsoft article on Windows and GPT FAQs.
Since a MBR formated array will limit the useable space to 2 TB it’s therefore best to use hard drives that are 1 TB or less for RAID 0, 5 and 10.
Consider the data growth rate and the size of the array. The Intel controller will limit the number of hard drives. The size of the PC cabinet and available system board SATA ports will also be growth constraints. It’s not uncommon for a business to experience an annual data growth rate of 20 percent.
If you need a RAID solution beyond the typical consumer level RAID configurations, then you should review the RAID options available from HP.
RAID technology in not infalible so you need to consider backups. A voltage spike inside your PC could render the RAID unusable and unrecoverable. Corrupted data or a virus are other reasons for keeping backups. An external USB connected hard drive might be sufficient for backups.
Throughly test your backup and restore software. Always keep more than one backup copy of your data.
Performance comparisons:
All of the hard drives benchmarked are Hitachi 1.5 TB SATA III hard drives connected as SATA II devices. HD Tune was used to benchmark the seniaros using default settings.
Configuration
Average MB/s
Maximum MB/s
Single hard drive
113
152
RAID 0
222
289
RAID 1
104
142
RAID 5
221
288
RAID 10 (0+1)
220
274
Creating a RAID 0 Array.
If you are configuring the Windows boot drive into a RAID 0 array, then you need to use the Intel option ROM method for creating the array. Tapping Cntl-i at boot up will get you into the Intel option ROM firmware setup utility. Once the array has been created then boot up your image recovery disk and load the array from your image backup.
If you are creating a RAID 0 data only array then you can use the IRST when running Windows to create the array. You can also use the Intel option ROM firmware setup utility. Even though this HP VISTA RAID setup article is dated, it does have some excellent information.
Launch IRST.
You can observe in the above image the status of the hard drives attached to the Intel SATA controller. Now click on Create. Select Optimized Disk (RAID 0) then click on Next.
Configure the RAID 0 array by selecting two hard drives of the same size and click on Next.
Next click on Create Volume.
A warning window will appear. Click on OK.
The new RAID volume is now created. However, you now need to use Windows Disk Management to ready the volume for use.
Creating a RAID 1 Array.
If you are configuring the Windows boot drive into a RAID 1 array, then you need to use the Intel option ROM method for creating the array. Tapping Cntl-i at boot up will get you into the Intel option ROM firmware setup utility. Once the array has been created then boot up your image recovery disk and load the array from your image backup.
If you are creating a RAID 1 data only array then you can use the IRST when running Windows to create the array. You can also use the Intel option ROM firmware setup utility. Even though this HP VISTA RAID setup article is dated, it does have some excellent information.
Launch IRST.
You can observe the above status of the hard drives attached to the Intel SATA controller. Now click on Create.
Select Real-time data protection (RAID 1) and click NEXT.
Configure the RAID 1 array by selecting two hard drives of the same size and click on Next.
Next click on Create Volume.
The new RAID volume is now created. However, you now need to use Windows Disk Management to ready the volume for use.
Creating a RAID 5 Array.
A RAID 5 array will require three to four hard drives. While it is possible to convert a RAID 0 to a RAID 5 array, I recommended that you consider building the RAID 5 array from scratch rather than use a conversion method.
If you are configuring the Windows boot drive into the RAID 5 array, then you need to use the Intel option ROM method for creating the array. Tapping Cntl-i at boot up will get you into the Intel option ROM firmware setup utility. Once the array has been created then boot up your image recovery disk and load the array from your image backup.
If you are creating a RAID 5 data only array then you can use the IRST when running Windows to create the array. You can also use the Intel option ROM firmware setup utility. Even though this HP VISTA RAID setup article is dated, it does have some excellent information.
The following procedure will build the RAID 5 array with three hard drives using IRST.
Launch IRST.
During this create process, I will be using the last three hard drives
listed in the above image under Storage System View. Now click Create.
Select Efficient data hosting and protection (RAID 5) and click
On Next.
Select the three hard drives for RAID 5 and click on Next.
Review the volume creation selections then click on Create Volume.
Review the final warning then click on OK.
Now click on OK and review the final array status.
Creating a RAID 10 (0+1) Array.
A RAID 10 (0+1) array will require four hard drives.
If you are configuring the Windows boot drive into the RAID 10 (0+1) array, then you need to use the Intel option ROM method for creating the array. Tapping Cntl-i at boot up will get you into the Intel option ROM firmware setup utility. Once the array has been created then boot up your image recovery disk and load the array from your image backup.
If you are creating a RAID 10 (0+1) data only array then you can use the IRST when running Windows to create the array. You can also use the Intel option ROM firmware setup utility. Even though this HP VISTA RAID setup article is dated, it does have some excellent information.
The following procedure will build the RAID 10 (0+1) array using four hard drives using IRST.
Launch IRST.
This create process will be using the last four hard drives listed in the above image under Storage System View. Notice that the hard drives are not the same size. Two of the hard drives are 1.5 TB and two hard drives are 2 TB. While it’s recommended to use all hard drives of the same size, it’s not required. The RAID 10 creation progam will pick to two smallest hard drives for the striped pair and then the two largest hard drives for replication pair but not the opposite as the two largest hard drives if used as the striped pair would not fit on the two smaller hard drives for replication. Now click Create.
Select Balanced performance and data protection (RAID 10) and click
on Next.
Select the four hard drives for RAID 10 and click on Next.
Notice that IRST is set to create a RAID 10 volume with the capacity of 2.7 TB.
Review the volume creation selections then click on Create Volume.
Review the final warning then click on OK.
Now click on OK and review the final array status.
Conversion from RAID 0 to RAID 5
If you have a RAID 0 hard disk configuration and you are concerned that a hard drive failure will cause your PC to crash or results in data loss then you might have an option to use RAID 5. A RAID 5 three drive configuration can survive a single hard drive failure but not two failing hard drives. While there are other RAID configurations possible, this document will only be addressing a three hard drive configuration using the Intel SATA controller. Some of the newer HP PCs can accommodate three hard drives and can be configured when ordered with RAID 5.
Observe the below image. This PC has a RAID 0 2.7 TB array. To build the RAID 5 array, you will need to add (configure) an additional hard drive into the array. Click on Manage and then add an eligible hard drive to the array.
Note: all data on the hard drive to be added to the array will be lost since parity and data from the existing array needs to be written to the added hard drive to create the RAID 5 array. Take backups of your existing array in case something goes wrong.
Once you are on the Manage screen then click on Change type.
The following screen will appear:
Select the drive to be included into the array and click on OK.
When the migration process begins, the Status is now indicating migrating and the Type is RAID 5. The hard drive added was 2 TB which meets the minimum amount. BE PATIENT! The migration process will take a very long time for an in place migration to complete.
It’s much faster to delete out the original RAID 0 volume, create the new RAID 5 volume and then reload the original RAID 0 image from your backups. I recommend that you consider
this method verses the in place approach.
Click on Status to show the migration progress.
RAID 0 to RAID 5 Observations
I was able to shut down and boot the RAID configuration before the migration process had completed. The in place migration method was very slow, about 3% per hour and hence my recommendation to use a differnet method. Booting up from different hard drive before the migration process has completed results in a BSOD on boot up.
After completing the RAID 5 conversion, I did receive a message from IRST indicating that one or more volumes is protected against a hard drive failure.
Other RAID Migrations
While there are other RAID migrations options available, they can be platform (chipset) specific. Review this Intel Chipset article on supported RAID migrations. Even though the Intel RAID migration has a safety function built into the process in the event of a power loss or shutdown, it’s always best to have a complete set of up-to-date backups.
The migration process can be painfully slow. The migration time is largely dependent on the hard drive sizes and the number of hard drives involved in the overall migration. In some cases it might be faster to build the RAID array from scratch and then load the data back to the array verses using an in place migration process.
It is possible to increase the overall RAID array (volume) size with some RAID configurations by adding hard drives to the array. The overall size of the array may be limited by how the array had been previously formatted by Windows. Review the information under the Considerations topic in this document.
*********updated August 21, 2013
If you are using SSDs in a RAID 0 configuration then you will need to have the Intel 7 or 8 chipset plus Intel Rapid Storage Technology (IRST) version 11 or higher to get Windows TRIM support to function. The latest version of IRST as of 8/21/2013 that I have seen is 12.7.1036.
*************DISCLAIMER***********
There may be inaccuracies with the information contained in this document so please consider that when using RAID.
*************DISCLAIMER***********
HP DV9700, t9300, Nvidia 8600, 4GB, Crucial C300 128GB SSD
HP Photosmart Premium C309G, HP Photosmart 6520
HP Touchpad, HP Chromebook 11
Custom i7-4770k,Z-87, 8GB, Vertex 3 SSD, Samsung EVO SSD, Corsair HX650,GTX 760
Custom i7-4790k,Z-97, 16GB, Vertex 3 SSD, Plextor M.2 SSD, Samsung EVO SSD, Corsair HX650, GTX 660TI
Windows 7/8 UEFI/Legacy mode, MBR/GPT
Attachments:
RAID for Consumer PCs.doc ‏3761 KB

Great document
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Both Customs use Rosewill Blackhawk case.
Printer -- HP OfficeJet Pro 8600 Plus

Powerbook G4 as Media/Backup Server

After a lot of research I still haven't figured out a plan that will suit my needs. Im hoping someone here may be able to help out. I have an old Powerbook G4 1Ghz with 1gig RAM running OS 10.3.9. I don't use this machine currently, though it runs perfectly fine...minus the facts that it must be plugged in to operate and the OS is so old I cannot update any applications.
I'd like to re-purpose this machine as a media server and a backup server for my current Macbook Pro. My idea is to have two duplicate external Hard-drives connected to the powerbook for redundancy. I will store all of my media on these drives, as well as point time machine to these for backups for the MB pro. I want AppleTV to use the powerbook as its source library. My first problem is that iTunes on that machine is too old for AppleTV, and the OS is too old to upgrade iTunes to a workable version. So I know I will have to update the OS to something more current.
The second issue is how to setup the backup redundancy. In addition to any new backups from the MB Pro, I also have a ton of data/media Ive acquired over the years that I want to be able to access regularly. Ive already been burned on a couple drives in the past and having at least two copies of everything is a must. So what is the best solution for the backup discs? Since this system is more than just a backup (it needs to also play the media files for AppleTV), does it make sense to do a RAID of some kind, or can I get by with just mirroring two duplicate external drives?
With all that said, what OS should I upgrade to, and how should I set up the redundant storage? I apologize for the long-windedness and appreciate any feedback. Thanks.

Whew, I wouldn't use Time Machine at all, nor Raid, more on both later.
For OS, how much RAM does it have?
Tiger Requirements...
To use Mac OS X 10.4 Tiger, your Macintosh needs:
    * A PowerPC G3, G4, or G5 processor
    * Built-in FireWire
    * At least 256 MB of RAM (I recommend 1GB minimum)
    * DVD drive (DVD-ROM), Combo (CD-RW/DVD-ROM) or SuperDrive (DVD-R) for installation
    * At least 3 GB of free disk space; 4 GB if you install the XCode 2 Developer Tools (I recommend 20GB minimum)
http://support.apple.com/kb/HT1514
See Tom's, (Texas Mac Man), great info on where/how to find/get Tiger...
https://discussions.apple.com/message/15305521#15305521
Or Ali Brown's great info on where/how to find/get Tiger...
http://discussions.apple.com/thread.jspa?messageID=10381710#10381710
Leopard requirements/10.5.x...
    * Mac computer with an Intel, PowerPC G5, or PowerPC G4 (867MHz or faster) processor
minimum system requirements
    * 512MB of memory (I say 1.5GB for PPC at least, 2-3GB minimum for IntelMacs)
    * DVD drive for installation
    * 9GB of available disk space (I say 30GB at least)
There are workarounds if the 867MHz is the only hangup...
http://sourceforge.net/projects/leopardassist/

Edit files remotely Iomega EZ Media & Backup Center

Hi,
I'm deciding which NAS to buy. I'm interested in Iomega EZ Media & Backup Center.
I want to know if it is possible to edit any files remotely (word, excel, autocad, corel, etc.) without having to previously download it to the pc I'm remotely accessing with.
I don't want to download the file, edit it, and then re-upload the edited file. Is too uncomfortable.
I have to use an app to do this or I can edit it directly from Windows Explorer or a web browser like Firefox?
Thinkin that maybe I'll access from a public pc and want to have the possibility to edit it directly.
I'll appreciate any comments. Thanks

Hello aleb21
You would need to install LSM on every remote pc/workstation to be able to mount/map the shares for file editing.
You can install LenovoEMC Link on your iOS and Android mobile devices. The application is intended to allow you to open documents, however since the application functions the same as the web user interface it would be more for viewing documents not editing. To edit files/documents you would need to download the file, edit on the mobile device, then upload the updated file to the NAS.
The video is correct, but does not go over the portion about connecting the remote computer using the personal cloud section of LSM. Basically you would do the following:
-Launch LSM
-Navigate to the Personal Cloud tab, click on "settings" on that tab.
-Enter the cloud name you created on the device's web ui. It can take a few minutes to find the cloud in some situations.
-Enter your NAS credentials created on the NAS or that are included in the invite email sent from the NAS.
-Once connected LSM's default is to auto-map/mount the shares that your user as access for to the remote computer. You can confirm this option by right clicking on the LSM system tray icon and make sure the "map drive letters" option is checked. You can also access the shares via the share tab in LSM, this will open an explorer/find window for you to navigate through the shares.
WebDAV is seperate from the web user interface (home page and content explorer). It would look similar to a basic FTP web interface when accessing via a browser. Just like the FTP protocol you could theoretically map the connection to explorer/finder remotely as a web/internet location with your external ip address. It should allow for remote editing.
For VPN, when accessing your cloud using LSM on a remote computer it would function like a VPN between your NAS and the remote computer. If you want to use a 3rd party VPN and not use personal cloud it should be possible, but may require your router or computer on the network to actually manage the VPN software.
For the camera question, with your setup the nas would not be a part of it unless you have the ip camera's setup to save data to the NAS. If that is the case you can setup the destination share the camera's are storing to for media sharing. This would allow the Media Server feature to stream the saved videos locally and/or remotely. Keep in mind that the media server feature does not do transcoding so the media receiver would need to support the file format the ip camera's store.
All lifeline os devices have a copy jobs backup option, however it does require knowledge of directory sharing from the source computer to work, see Host data backup using Copy Jobs
I personally recommend looking into the ix2-dl option as it:
-is under $100 USD
-can support up to 2x 6TB hard disks w/ RAID 1, 0, and NONE (JBOD)
-has support for SecureMind surveillance
-has a more powerful SoC processor
Hope this all helps with your decision.
LenovoEMC Contact Information is region specific. Please select the correct link then access the Contact Us at the top right:
US and Canada: https://lenovo-na-en.custhelp.com/
Latin America and Mexico: https://lenovo-la-es.custhelp.com/
EU: https://lenovo-eu-en.custhelp.com/
India/Asia Pacific: https://lenovo-ap-en.custhelp.com/
http://support.lenovoemc.com/

Time Machine - Mac Pro - 4 Drives, 2 for data, 2 for TM Backup?

Here's the scenario,
Mac Pro with 4 drives. I'd like to have 2 of the drives for my data, OS, etc, and the other 2 for Time Machine backups.
Assuming the following,
Drive 1 (750GB), back up to Drive 2 (1TB)
Drive 3 (750GB), back up to drive 4 (1TB)
Is it possible to use Time Machine to simultaneously back up two different drives on one machine to two other drives?
Yes, I know part of the reason for a back up is to store it off line, off site, etc... My main reason to use TM is to recover any data that might have changes, been thrown out, or to recover a failed drive, and though I could use RAID for the recover drive scenario, I think I like the idea of using TM.
Thanks

Yes, you could but I would not recommend using a RAID as a startup volume. That's not what RAIDs are for.
If you want greater control over backups then TM isn't the way to go. Here are some backup programs better suited to the job:
Backup Software Recommendations
My personal recommendations are (order is not significant):
1. Retrospect Desktop (Commercial - not yet universal binary)
2. Synchronize! Pro X (Commercial)
3. Synk (Backup, Standard, or Pro)
4. Deja Vu (Shareware)
5. PsynchX 2.1.1 and RsyncX 2.1 (Freeware)
6. Carbon Copy Cloner (Freeware - 3.0 is a Universal Binary)
7. SuperDuper! (Commercial)
8. Intego Personal Backup (Commercial)
9. Data Backup (Commercial)
The following utilities can also be used for backup, but cannot create bootable clones:
1. Backup (requires a .Mac account with Apple both to get the software and to use it.)
2. arRSync
Apple's Backup is a full backup tool capable of also backing up across multiple media such as CD/DVD. However, it cannot create bootable backups. It is primarily an "archiving" utility as are the other two. In some respects Backup is similar to Time Machine.

Time machine on external drive will not back up itunes media file on a separate external drive. Have already reformated itunes media drive,dragged itunes media backup file from time machine (old copy) and removed time machine plist and restarted.

Two external drives, one for time machine backups and a second (daisy chained firewire) for itunes media folder . Time machine fails to backup the media file saying could not be completed, with no error specified. Steps taken already include reformating drive with media, dragging older media backup file from time machine disc to media disc, and deleting time machine plist and starting time macine preferences upon startup. Media folder is approx 200 gb, mostly ripped dvd movies.
Any help for this??
Thanks

Tks for the help. Tried to eliminate duplicates. Copy below.
6/11/14 3:07:33.458 PM com.apple.backupd[532]: Found 2332 files (193.66 GB) needing backup
6/11/14 3:07:33.488 PM com.apple.backupd[532]: 219.71 GB required (including padding), 539.32 GB available
6/11/14 3:09:42.200 PM com.apple.backupd[532]: Copied 1201 items (51.5 MB) from volume Macintosh HD. Linked 2894.
6/11/14 3:10:14.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:10:17.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:10:30.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:10:30.072 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Home Videos/2013 Trip To Kate and Jason - Large 1.m4v to (null)
6/11/14 3:10:44.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:10:57.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:10:57.327 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Home Videos/2013 Trip To Kate and Jason - Large.m4v to (null)
6/11/14 3:11:09.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:11:22.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:11:22.394 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Home Videos/IMG_0378.m4v to (null)
6/11/14 3:11:57.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:12:09.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:12:09.872 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Home Videos/IMG_0398.m4v to (null)
6/11/14 3:12:44.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:12:46.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:13:05.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:13:05.959 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Mobile Applications/AAA 2.4.1.ipa to (null)
6/11/14 3:13:23.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:13:46.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:13:51.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:13:51.325 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Mobile Applications/Air Sharing 3.4.3.ipa to (null)
6/11/14 3:14:18.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:14:21.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:14:48.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:14:51.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:14:51.289 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Mobile Applications/Angie's List 3.0.2.ipa to (null)
6/11/14 3:15:16.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:15:29.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:15:34.517 PM secd[422]: SecErrorGetOSStatus unknown error domain: com.apple.security.sos.error for error: The operation couldn’t be completed. (com.apple.security.sos.error error 2 - Public Key not available - failed to register before call)
6/11/14 3:15:34.517 PM secd[267]: SecErrorGetOSStatus unknown error domain: com.apple.security.sos.error for error: The operation couldn’t be completed. (com.apple.security.sos.error error 2 - Public Key not available - failed to register before call)
6/11/14 3:15:34.517 PM secd[267]: securityd_xpc_dictionary_handler EscrowSecurityAl[581] DeviceInCircle The operation couldn’t be completed. (com.apple.security.sos.error error 2 - Public Key not available - failed to register before call)
6/11/14 3:15:34.517 PM secd[422]: securityd_xpc_dictionary_handler EscrowSecurityAl[580] DeviceInCircle The operation couldn’t be completed. (com.apple.security.sos.error error 2 - Public Key not available - failed to register before call)
6/11/14 3:15:51.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:15:51.643 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Mobile Applications/AP Mobile 6.2.1.ipa to (null)
6/11/14 3:15:54.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:16:07.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:16:19.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:16:19.908 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Mobile Applications/Apple Store 120269.ipa to (null)
6/11/14 3:16:35.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:16:50.710 PM com.apple.backupd-helper[533]: Not starting scheduled Time Machine backup: Backup already running
6/11/14 3:16:53.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:17:00.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:17:00.552 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Mobile Applications/Archetype 1.6.2.ipa to (null)
6/11/14 3:17:10.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:17:23.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:17:35.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:17:49.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:18:01.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:18:14.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:18:28.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:18:40.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:19:03.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:19:06.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:19:18.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:19:41.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:19:43.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:19:56.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:20:11.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:20:23.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:20:36.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:20:48.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:21:01.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:21:13.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:21:26.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:21:38.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:21:51.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:22:03.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:22:16.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:22:28.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:22:41.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:22:53.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:23:06.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:23:19.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:23:31.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:23:57.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:24:09.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:24:22.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:24:38.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:24:50.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:25:03.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:25:15.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:25:35.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:25:47.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:25:47.887 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Mobile Applications/Bloomberg 3.0.ipa to (null)
6/11/14 3:26:01.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:26:13.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:26:13.942 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Mobile Applications/Calculator 3.4.ipa to (null)
6/11/14 3:26:26.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:26:26.509 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Mobile Applications/Camera Zoom 3.1.ipa to (null)
6/11/14 3:26:39.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:26:52.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:26:52.108 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Mobile Applications/Cards 2.0.1.ipa to (null)
6/11/14 3:27:14.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:27:17.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:27:29.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:27:29.606 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Mobile Applications/Casino 2.5.ipa to (null)
6/11/14 3:27:47.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:28:00.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:28:00.327 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Mobile Applications/Clear Day 2.6.ipa to (null)
6/11/14 3:28:14.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:28:26.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:28:39.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:28:56.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:29:09.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:29:21.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:29:34.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:29:47.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:29:59.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:30:12.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:30:24.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:30:37.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:30:49.085 PM xpcproxy[629]: assertion failed: 13D65: xpcproxy + 3438 [D559FC96-E6B1-363A-B850-C7AC9734F210]: 0x2
6/11/14 3:30:49.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:30:50.194 PM syncdefaultsd[628]: Fixing push token
6/11/14 3:30:52.507 PM xpcproxy[632]: assertion failed: 13D65: xpcproxy + 3438 [D559FC96-E6B1-363A-B850-C7AC9734F210]: 0x2
6/11/14 3:31:02.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:31:14.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:31:27.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:31:39.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:31:52.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:32:05.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:32:17.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:32:30.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:32:42.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:32:55.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:33:07.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:33:30.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:33:32.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:33:55.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:33:58.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:34:21.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:34:23.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:34:46.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:34:49.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:35:02.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:35:18.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:35:30.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:35:30.676 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Mobile Applications/Collection HD 1.7.ipa to (null)
6/11/14 3:36:14.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:36:17.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:36:29.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:36:29.651 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Mobile Applications/eCardExpress 2.1.ipa to (null)
6/11/14 3:36:52.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:37:14.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:37:17.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:37:30.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:37:52.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:37:55.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:38:07.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:38:30.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:38:32.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:38:45.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:39:08.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:39:10.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:39:23.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:39:46.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:39:48.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:40:01.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:40:23.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:40:26.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:40:38.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:41:01.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:41:04.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:41:16.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:41:39.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:41:41.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:41:54.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:42:17.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:42:19.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:42:32.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:42:54.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:42:57.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:43:09.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:43:32.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:43:34.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:43:47.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:44:10.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:44:12.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:44:25.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:44:48.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:44:50.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:45:03.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:45:25.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:45:28.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:45:40.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:45:55.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:46:07.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:46:20.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:46:32.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:46:45.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:46:58.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:47:10.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:47:23.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:47:35.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:47:48.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:48:00.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:48:13.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:48:26.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:48:38.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:48:51.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:49:03.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:49:16.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:49:21.393 PM WindowServer[128]: MPAccessSurfaceForDisplayDevice: Set up page flip mode on display 0x04280300 device: 0x7f8ef9d04e00 isBackBuffered: 1 numComp: 3 numDisp: 3
6/11/14 3:49:21.731 PM launchservicesd[52]: Application App:"System Preferences" asn:0x0-44044 pid:509 refs=7 @ 0x7fb5b9443730 tried to be brought forward, but isn't in fPermittedFrontApps ( ( "LSApplication:0x0-0x45045 pid=513 "com.apple.prefs.backup.remoteservice"")), so denying. : LASSession.cp #1481 SetFrontApplication() q=LSSession 100019/0x186b3 queue
6/11/14 3:49:21.731 PM WindowServer[128]: [cps/setfront] Failed setting the front application to System Preferences, psn 0x0-0x44044, securitySessionID=0x186b3, err=-13066
6/11/14 3:49:21.733 PM WindowServer[128]: device_generate_desktop_screenshot: authw 0x0(0), shield 0x7f8ef9e94e00(2001)
6/11/14 3:49:21.795 PM WindowServer[128]: device_generate_lock_screen_screenshot: authw 0x0(0), shield 0x7f8ef9e94e00(2001)
6/11/14 3:49:29.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:50:48.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:50:48.546 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Mobile Applications/GarageBand 1.1.ipa to (null)
6/11/14 3:51:01.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:51:13.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:51:26.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:51:38.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:51:51.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:52:03.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:52:16.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:52:29.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:52:41.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:52:55.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:53:07.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:53:07.747 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Mobile Applications/Glympse 2.22.444.ipa to (null)
6/11/14 3:53:20.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:53:32.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:53:32.869 PM com.apple.backupd[532]: Stopping backup.
6/11/14 3:53:32.869 PM com.apple.backupd[532]: Error: (-36) SrcErr:YES Copying /Volumes/Media/itunes Media/Mobile Applications/Golf Channel 3.7.2.ipa to (null)
6/11/14 3:53:33.357 PM com.apple.backupd[532]: Copied 127 items (2.24 GB) from volume Media. Linked 0.
6/11/14 3:53:33.376 PM com.apple.backupd[532]: Copy stage failed with error:11
6/11/14 3:53:34.607 PM com.apple.backupd[532]: Backup failed with error 11: 11
6/11/14 3:55:53.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:56:05.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:56:18.000 PM kernel[0]: disk1s2: I/O error.
6/11/14 3:56:33.000 PM kernel[0]: disk1s2: I/O error.

Re-create a mirrored RAID after restoring backup

As a follow-up on my thread http://discussions.apple.com/thread.jspa?threadID=833779&tstart=0 :
On a XServe G5 with OS X Server 10.4.8 and a two-drive mirrored RAID I do backups by cloning the RAID onto an other disk (in bay three) using Intego's Personal Backup X4.
Now it may happen that there is some kind of data loss or an other emergency case that urges me to boot from the cloned HD. I would do this by simply removing the HD in bay one and replacing it with the clone, then restart the server (second HD of the RAID1 remains in bay two).
The information I got until yet says that the mirrored RAID is then broken and needs to be completely re-build. Is this correct so far ? I originally assumed that the clone "remembers" that it was part of a RAID system before and rebuilds automatically with the second HD still in place. Very likely wrong ?
So if I need to rebuild the clone from scratch, which steps do I follow exactly ? As far as I understand I have two choices:
(1)
Via command line (as root): diskutil createRAID mirror <set name> Journaled HFS+ <device identifier disk1> <device identifier disk2>
<set name>: Would be volume name of the RAID to create, right ?
<device identifier disk1/2>: What is this and how to determine ?
(2)
Via disk utility: Select one disk (first line on the left disk/volume list, e.g. "76,2 GB Hitachi 123ABC"), click in "RAID" tab, do settings.
Then drag & drop each harddisk from the left to the right list (again, the first line of each disk entry). Finally creating the RAID by clicking at the button "Generate".
I'm not sure, although I would likely handle this with the disk utility, it appears easier to me using the diskutil command in terminal. But maybe I simply lack of explaining the GUI... let me know how to post images and I will add some screenshots here.
Well, if my proceedings are too complex and there is something easier, please let me know. I'm open for everything.

>This part of my question originally referred to the fact that when booting from the cloned backup in bay one while still having the second disk of the old RAID in bay two, it could occur that the OS rebuilds the RAID by using the data on the remaining mirror disk in bay two, couldn't ? This would be not desired, because the data on that disk would be no longer usable. So just for clarification, not that we have a misunderstanding in this point.
I see what you're getting at, and I don't believe it's an issue.
Given three disks, disk0, disk1 and disk2, where disk0 and disk1 are mirrored and that mirror fails, the OS will not rebuild the mirror using disk1 and any other disk. It won't arbitrarily choose any disk in the system to rebuild on - you have to specifically mark as disk as usable, either by enabling auto-rebuild and adding a spare disk to the array, or by using 'repairMirror' and specifying the disk to use.
In any case, if you reboot the system from disk2, there is no way it will rebuild the array using that disk since that disk is the active boot drive and can not be unmounted (which is necessary before being added to an array).
So, no, there is no chance that the system will auto-rebuild the working half of the mirror with your backup disk.
>Okay, let's summarize... I would follow this procedure in order to boot from the cloned backup and build a new RAID:
1. Remove both disks from the XServe.
2. Insert the cloned backup disk and boot.
3. Open terminal, su root, execute:
diskutil enableRAID disk0
diskutil repairMirror disk0 disk1
This is not correct.
When you 'enableRAID disk0' the OS will create a new, virtual disk (likely 'disk2'). This is the mirror array (currently consisting of only one drive), and it is this virtual disk that you need to specify as the mirror to be repaired.
So, given disk0 and disk1 as being the physical disks in the server, the steps are more likely to be:
<pre class=command>diskutil enableRAID disk0</pre>
(this creates a new, virtual disk2)
<pre class=command>diskutil repairMirror disk2 disk1</pre>
(this adds physical disk1 to the degraded mirror disk2)
When complete disk2 will be a mirror RAID consisting of disk0 and disk1.
>When using "diskutil enableRAID", I cannot determine the label of the RAID as I would do with "diskutil createRAID" (in command line manual this is referred to "setname"). Which setname does my "new" RAID system get, a default one ?
You know, I have no idea
I've never noticed this before. If I think about it, I'd guess that the setname is based on the source disk name.
>> If you add a drive to a RAID it gets reformatted, so it doesn't matter what's
on it.
Even if it was part of the RAID system before (the original disk in bay two) ? It could still have the RAID information on it and try to rebuild RAID when getting mounted, couldn't ?
No. See my comments above. The OS won't auto-rebuild unless a) the RAID is set to auto-rebuild and b) there is a spare disk in the array. If either of those two conditions are not true then the disk acts as a degraded mirror and can be reformatted/reallocated as you like.

Best solution for media storage

Hi Everyone,
I am looking for suggestions/how-to on the best setup for media storage. We have two editors (and two computers - Mac Pro PowerPC and iMac Intel). We are currently using an internal 500 GB slot on the Mac Pro along with 1 additional external 1.5 TB drive. Then, on our iMac we use a 1.5 TB external drive. We use, for external drives, LaCie.
Here's our problem. We are running out of space. So, what is the best solution for media storage? Should we get a small rack for our external drives from LaCie and daisy chain them? Or, should we get a server? The only problem I have with a server is connection speed...we, most of the time, have a slow connection at our college.
p.s. here is a link to LaCie's website listing a rack...and we have the d2 drives. So, do you daisy chain them or plug each one in individually?
http://www.lacie.com/us/products/product.htm?pid=10172
Any ideas/thoughts/suggestions are greatly appreciated!!
Thanks in advance.
zanm
Message was edited by: zanfardinom

Hi Everyone!
Thank you all for your suggestions. I agree...Drobo looks great, but I am finding more and more bad news when it comes to editing. It looks like a great solution for archiving. I received another solution with great reviews from one of my colleagues contacts. They work for a big company.
Hope this helps...something else to add to the mix.
*Our edit suite storage solution is a Facilis Terrablock 24EX unit. (http://www.facilis2.com/24ex.html) It has 18TB of space and is connected on 4GB Fibre channel to both suites. On top of that we have an Apple X-Serve running Final Cut Server that sorts and catalogs all the video we put in so network users (Mac and PC) can search and look at media from their workstations. We just put this in a few months ago. Before that we had a Rorke Data Galaxy HDX with 6TB of space on a 2GB Fibre Channel connection. ( http://www.rorke.com/av/galaxy-hdx.cfm ) It’s now a backup storage unit. Both systems have excellent performance though, we upgraded mostly for space and the server software.*
Again, thank you all for your help. I will research all suggestions.

Raid 1 for media backup

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