Which RAID Configuration for my WD "My Book Mirror Edition"?

About to reformat my WD "My Book Mirror Edition" to use on my iMac. I hope to also install on my iMac "Virtual Box", "VM Fusion", or "Parallels" and then run a few windows products. Which RAID configuration should I choose in the WD "drive configurations" box?

If I were you I'd run any Virtual Machine directly on your iMac, not on a "WD My Book Mirror Edition", in particular not when connected through USB 2.0.
To store data, the WD is fine.
For the RAID options:
RAID 0 ("striping") : if you want something fast (insofar this is possible with a USB connection). Note that when one of your disks fails you can say goodbye to all your data.
RAID 1 ("mirroring"): more safe. If one disk fails, the data are recoverable as they are on the other disk as well. Disadvantage is you get only half the storage capacity compared to RAID 0.
Oh. my personal recommendation: RAID 1 is not an alternative to making a backup. So whatever option you choose: if you store valuable data on the disk that are nowehere else: back them up!
On formats:
HFS+ : definitely recommended if you only use the RAID array on the Mac.
FAT 32: if you also use it on a Windows machine. Note that files cannot be larger than 4 GB in this case.
Hope this helps.
Eric

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What is the best RAID configuration for a MacPro as a Logic User?

There ought to be a universal answer to this question: what is the best RAID configuration for Logic Mac Pro users? I will be more specific.
I use Logic Studio, Reason, Ableton, and Motu Symphonic Instrument simultaneously.
I want to fail safe my precious audio files and improve performance as the system reads/writes data from multiple files, from audio tracks to digital samples.
I want to run video files simultaneously to do nifty audio soundtracking to video.
Here is the configuration I have in mind.
HD 1: OS and Logic Studio, Reason/Ableton samples etc. software (non-raid) (250 GB)
HD 2/3: MIrrored RAID set for AUDIO FILES (500 Gb identical pair)
HD 4: Video files / Bouncing (1 TB)
Makes sense right? A disk for reading software. A pair of 500 GB disks for reading/writing audio files and sessions in mirrored array. A 1 TB disk for video and bouncing. The main question I have is, for audio files only, is striped or mirrored better? 64K blocks the best? And are there any more details. I assume to do this in Disk Utility.

Well, both Mirrored and Striped have their pros and cons. If you use mirrored, it will offer no better performance than the spec'ed drive along with it's sata bus speed. The plus point is, if one drive goes down, you have the second as a backup as the complete contents of one drive are mirrored on the other.
With striped you will get a performance boost because all files (for example a single project) will get written across both drives and hence split the load on the drives and the SATA busses. The drawback is that you'll have to make sure you have a good, regular backup schedule in place because when one of the drives goes to drive heaven, you're going to be stuffed without a full backup of both drives.
Exactly what performance boost you'd get will depend on your project, number of files, size of files, fragmentation of files, track count etc. You may find it would be easier to use the 3 drives straight, with no raid and have:
HD 1: OS and Apps. No samples at all.
HD2: Audio Files for Logic projects
HD3: Reason, Ableton, Logic etc instrument sample library
HD4: Video and bouncing.
Which is what I ended up doing although I use HD4 as an interchangeable backup for HD1 and 2.
There is no universal answer to this as each must make their own choice based on their preferences and needs. Mirrored will give you full backup but on-site, in machine backup. Not much good if something untoward and drastic happens to the physical machine. I think a few people toy with striped RAID but fall on the side of using the drives straight, as in their projects they don't see a big enough gain over splitting the data across your 3 remaining drives without RAID. Studios that seriously consider raid often go out and get a dedicated raid that can offer more variations than raid 0 or raid 1 (Striped and Mirrored) and better throughput.
I hope this helps a little and not just added to the dilemma.

RAID Configurations for Cisco servers

Hi All,
What is the RAID configuration for Cisco Appliance(Version 8.5) like CUCM, CUPS, CUIC, Unity etc?RAID Configuration will be done while installtion itself or we need to do it explicitly?
Regards,
Adithya

Hi Geoff,
Thanks for the reply. Just wanted to know whether if this RAID configuartion is similar to the other server RAID where we install Cisco applications.(Like OS & Application Software is RAID 1 and Database is RAID10).
Regards,
Adithya

Best Raid Configuration for a 8-1tb hhd server

Hi All,
I have been trying to figure out what would be the best raid configuration for my Windows 2012 essentials server. So I was wondering if I could get some advise on this. Here is what I would like to get out of this configuration.
I would like to split the 8-1tb drives into 2 VHD one with about 300gb for the OS to be installed on, and the rest to be use for storage. I want like to have good redundancy, fairly good read & write capabilities.
I will be using this server for a Small Web Page and Game Hosting, Email Exchange, Critical Application hosting.
I would like the ability to enlarge the overall raid storage by swapping out my 1Tb drives with 2Tb or larger as the need for more storage arises.
Any help would be greatly appreciated,
Thanks

You may be better of using Storage spaces and not using raid at all.
Robert Pearman SBS MVP
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Can SSD which is configured for intel rapid start be used to store data files as a normal drive

Can SSD which is configured for intel rapid start(No Smart Response) be used to store data files as a normal drive
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I think I have discovered the answer to my own question!
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Drop a database which is configured for alwayson

Hi All,
Can i delete a database which is configured for always on without removing the database from Always on availability group?
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Check these
https://msdn.microsoft.com/en-us/library/hh213326.aspx
https://msdn.microsoft.com/en-us/library/ff878113.aspx
http://blogs.msdn.com/b/psssql/archive/2012/06/13/how-it-works-drop-availability-group-behaviors.aspx
Regards, Ashwin Menon My Blog - http:\\sqllearnings.com

RAID configurations for RHEL partition

We have RHEL 5.x in our production environment using VMware which is configured on RAID using RAID 1, RAID 5 & RAID 10. I had couple of queries with RAID configuration:
1) Is it possible for a RHEL partition to have 2 RAID configurations, like some part of partition on RAID 1 and the remaining on RAID 5?
2) How to identify the RAID configurations used by a RHEL partition.
I hope, I have been able to explain the problem.
Requesting a reply to my query.
Regards

1) Is it possible for a RHEL partition to have 2 RAID configurations, like some part of partition on RAID 1 and the remaining on RAID 5?
No. RAID configurations work on the block level and do not use logical partitions. You can however partition a RAID volume.
2) How to identify the RAID configurations used by a RHEL partition.
Depends what you are using. If you have a hardware RAID, it is transparent to the OS and cannot be seen without using any hardware specific host adapter utilities. If it is software, it depends on mdadm, LVM or BTRFS. What are you using?
P.S. you will most likely do not want to use RAID 5 unless you have special hardware controller to deal with RAID 5 checksums, etc. It's definitely not a solution for large storage, since it will take days to rebuild in case of a failure.

Which Powermac configuration for photo editing

I am looking for a mac system which is tuned for digital photography. Currently I am using CS2, ACR and iviewpro for raw digital workflow on iMac 1.8 2 gb ram. I am testdriving Adobe's Light Room.
I am now in the market for an upgrade where the iMac will be used as a second computer for the standard household computer business.
Which system would you advice? Please take into account display size, ammount of memory and processor configuration. I am looking for second opinions wrt the sales advice I got from a apple store.
Thanks in advance for your precious time and advice
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Well, not knowing what the budget it is makes it a bit tough...? Generically, I would get the fastest PowerMac and as much RAM as I could afford. AND- get dual displays. Get a slower PowerMac if need be. Trust me, dual displays will be much more productive than a single display on a faster machine. It was one of the best things I ever did. I use a LaCie 22 CRT for my images and a 23" ACD for pallets and most everything else. You can have multiple windows of Bridge open. It's a dream. BTW, I do prefer the color of the CRT. It is calibrated and my lab prints match up favorably. The CRT is a bit softer than the ACD. However the ACD is too sharp. Prints fall in between. I much prefer the text one the ACD.
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Best RAID configuration for storing Datafiles and Redo log files

Database version:10gR2
OS version: Solaris
Whis is the best RAID level for storing Datafiles and Redo log files?

Oracle recommends SAME - Stripe And Mirror Everything.
In the RAC Starter Kit documentation, they specifically recommend not using RAID5 for things like voting disk and so on.
SAN vendors otoh claims that their RAID5 implementations are as fast as RAID10. They do have these massive memory caches...
But I would rather err on the safer side. I usually insist on RAID10 - and for those databases that I do not have a vested interest in (other than as a DBA), and owners, developers and management accept RAID5, I put the lead pipe away and do not insist on having it my way. :-)

X4500 RAID Configuration for best performance for video storage

Hello all:
Our company is working with a local university to deploy IP video security cameras. The university has an X4500 Thumper that they would like to use for the storage of the video archives. The video management software (VMS) will run on an Intel based server with Windows 2003 server as the OS and connect to the Thumper via iSCSI. The VMS manages the permissions, schedules and other features of the cameras and records all video on the local drives until the scheduled archive time. When the archive time occurs, the VMS transfers the video to the Thumper for long term storage. It is our understanding that when using iSCSI and Windows OS there is a 2TB limit for the storage space - so we will divide the pool into several 2TB segments.
The question is: Given this configuration, what RAID level (0, 1, Z or Z2) will provide the highest level of data protection without comprimising performance to a level that would be noticable? We are not writing the video directly to the Thumper, we are transferring it from the drives of the Windows server to the Thumper, and we need that transfer to be very fast - since the VMS stops recording during the archiving and restarts when complete, creating down time for the cameras.
Any advice would be appreciated.

I'd put as many disks as possible into a RAID 5 (striping) set. This will provide the highest level of performance, with the ability to sustain a single disk failure.
With striping, some data is written to all the disks in the stripe set. So, if you have 10 disks in the set, then instead of writing data to a single disk, which is slow, 1/10th of the data is written to each disk simultaneously, which is very fast. In effect, the more disks you write to, the faster the operation completes.

Best RAID configuration for combining external thunderbolt enclosures?

I'm looking at configuring two external Western Digital Thunderbolt Duo drive enclosures using Disk Utility's software RAID setup tool. Each enclosure houses two 2TB drives. I'm looking to get the performance of RAID 0 striping with the redundancy of RAID 1 mirroring. What I'm not sure of, and I hope someone can shed some light on, is how to combine the RAID sets to achieve my desired goal. As I see it, there are two possible ways to go about this.
The first would be to configure the master RAID set as mirrored, with the individual thunderbolt enclosures configured as striped sets. Example:
The second approach would be to configure the master RAID set as striped, with the individual thunderbolt enclosures configured as mirrored set. Example:
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Start here:
http://en.wikipedia.org/wiki/RAID
see the heading Nested (hybrid) RAID
The issue with striped RAID is that loss of one drive is devastating. Lose one drive and you lose it ALL.
They advocate you make a striped set of Mirrored drives. One failure and you're fine, as long as you don't have another failure before you fix it.
NB> RAID is not Backup -- you still need a backup.

Which RAID Configuration !

I'm just about to build a new system and a little undecided as to which hard drive configuration to use. I have bought two Samsung Spinpoint SATA II 400gb drives with the intention of running them in a RAID 1 (mirroring) configuration. The reason for choosing RAID 1 is that I have a large music collection currently on an IDE drive that is no longer large enough to store all the data. By transfering this data to a RAID 1 drive, I have both a larger capacity drive for storage and a back-up of the music library. I will also run the operatiing system and all other software from the RAID 1 drive.
My question is, by running a RAID 1 configuration with new SATA II drives, will I notice a significant reduction in read/write speeds compared to my current RAID 0 (striped) configuration on two SATA 1 drives ?
Thankyou for any advice.

Quote from: technojunkie on 05-March-07, 04:30:46
The reason for choosing RAID 1 is that I have a large music collection currently on an IDE drive that is no longer large enough to store all the data. By transfering this data to a RAID 1 drive, I have both a larger capacity drive for storage and a back-up of the music library.
A RAID 1 will definitely accomplish what you want but it seems like the wrong application given what you say above. It's moreso a hardware backup rather than an efficient data backup. For example a server that needs to run 24/7 with no down time. Drive 0 fails then Mirror 1 will keep system functional until Drive 0 is replaced.
In your case it's a perfectly good waste of a 400GB drive. Especially if your drives are new.
If you have data corruption on 0 you also have it on 1. If you have a virus on 0 you have it on 1. If you delete data on 0... you deleted it on 1 also.
See what I mean you really have no "data" backup you have a "drive" backup.
You could get a good image compression backup program like Paragon or Acronis and do compressed snapshots of your Drive 0 and forget the RAID 1. This would allow dozens of snapshots to be stored on the second drive and would actually do you some good if you have a virus or accidental delete.

Best practice RAID configuration for UCS C260 M2 for Unified Communications?

I have two UCS C260 M2 servers with 16 drives (PID: C260-BASE-2646) and I am trying to figure out what the best practice is for setting up the RAID.
I will be running CUCM, CUP, CUC, Prime, etc. for about 2000 phone environment.
If anyone can offer real world suggestions that would be great. I also have a redundnat server.

The RAID setup depends a bit on your specific configuration; however, there is a guide for Cisco Collaboration on Virtual Servers that you can review here:
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/virtual/CUCM_BK_CF3D71B4_00_cucm_virtual_servers/CUCM_BK_CF3D71B4_00_cucm_virtual_servers_chapter_010.html#CUCM_TK_C3AD2645_00
If your server is spec'd as a Tested Reference Configuration (TRC) then the C260M2 TRC1 would have 16 HDD that you would configure/split into 2 x 8HDD RAID 5 arrays.
Hailey
Please rate helpful posts!

Raid configurations for dummies...hmm

Warning! graphic material.
No I didn't make this up myself.
May be actually useful, (though I can't vouch for accuracy).
DId I say you have been warned.
• Raid

Unfortunately, the phrase "graphic material" is not sufficient for me to hit the link. I'm behind a corporate firewall that is armed with the most accurate and up to date sexual material filters and alarm systems you can imagine. Big Brother, his sister and all of his cousins are watching my machine's Internet traffic 24/7/365
bogiesan

Changing Raid configuration

we have changed the Raid 1 to a non-Raid configuration for testing purposes. Now we wanted to set the Raid 1 again in the configuration menu of the LSI Controller. But there it says, that all data will be erased. Isn't it possible to set one HDD as the primary HDD and mirror the data to the other HDD (this way is possible with server controllers)? If this isn't possible, how can I get the Raid 1 back, without losing Data and the Service partition... Perhabps creating Rescue and Recovery cds?
Thanks
Regards,
Christof

are you sure your primary drive was released from the array topography? it sounds like something is still being flagged as being part of an array.
if that's no help, try this:
- physically unplug both drives from your system
- boot into the LSI BIOS
- delete the old array
- turn off the system
- plug the primary drive back in
- boot into windows
- plug in the second drive
- set it to 'online' in disk management
- run MSM and see if it will let you create an array
somewhere along the way you might have to delete the LSI array from the boot menu in the D10 BIOS and re-enable it.
my gut feeling is that something is still flagged somewhere and needs to be unflagged for this to work.
ThinkStation C20
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Which RAID Configuration for my WD "My Book Mirror Edition"?

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