RAID it with 1 or 2 disk

Hi all!
I´ve a Macbook Pro with 2 LACIE D2 500 Gb e-SATAII connected with a Sonnet Tempo SATA ExpressCard/34 eSATA II.
Can you guys help me with this:
If i buy a LaCie 2big Dual (2-disk RAID) eSATA II 3Gbits & Hi-Speed USB 2.0 1TB is it possible to have the same speed and rate transfer (?) is it faster to work with a RAID with 2 disk (individual) or a RAID with the same 2 disk but only connecting via one eSATA II cable (?)
In the end i think it´s the same (or not!) but only with one power suply (LaCie 2big Dual)
Can you guys help me?
Thank you!
HBars

+Will you have more speed / streams if i use a single cable connected to a box with two disks in RAID, or i get it from a two separated ones with RAID via software - RAID via software or via hardware?+
Hbars,
First off you are only editing HDV and DV material, which have roughly the same data transfer (3.1x -3.5 MB/s), even a FW 400 drive could give you some decent performance.
Should you find yourself in need to edit uncompressed SD then all the drives I suggested will serve you well.
The answer is that you will indeed be able to edit on the fly (fast enough) with the drives I suggested and with a single cable with no problems while editing those formats (for uncompressed SD eSATA would be best and if you can I would always recommend that) and yes I would trust more a tested and reliable RAID drive rather then the one you want to experiment with Lacie drives (I'm not a fan of Lacie drives, sorry).
I haven't used the Fusion F2 so far but from what I know it appears to be an interesting bus-powered drive.
Once again, for the kind of formats you are working with you are safe with just a single cabled drive mentioned above.
G.

Similar Messages

Accidently resolved RAID 0 via diskutility. The disks are untouched and found as offline RAID disk. Any chance to put them togehther again?

I accidently resolved a RAID 0 with diskutility. The disks are untouched and found as follows:
diskutil list
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *2.0 TB disk0
1: EFI 209.7 MB disk0s1
2: Apple_RAID_Offline 2.0 TB disk0s2
3: Apple_Boot Boot OSX 134.2 MB disk0s3
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk1
1: EFI 209.7 MB disk1s1
2: Apple_HFS CK 999.9 GB disk1s2
/dev/disk2
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *2.0 TB disk2
1: EFI 209.7 MB disk2s1
2: Apple_RAID_Offline 2.0 TB disk2s2
3: Apple_Boot Boot OSX 134.2 MB disk2s3
diskutil listraid
No AppleRAID sets found
The RAID disks are found and marked offline, is there any chance to put them together again?

You don't break a stripe array into two drives and have anything to work with, you can easily break a mirror raid though.
SoftRAID "takes over" and replaces from Apple's and can 'recover' an array.
You should never work with or run with a stripe RAID0 and not have a couple current backups - unless the array is just for scratch.
Data recovery only read the volume, and recovers to another physical hard drive, it is not done "in place." that would be disk repair type operations, such as Disk Warrior 4.4. Data Rescue 3 is what most people try to use first, demo mode. If it seems to work then $99 to buy.
SoftRAID 4 $129 might be your only choice though I think something is getting lost in translation as to what type and nature and its current state. Email support there, they will walk you through.
And have 3-4 more drives to work with. A large enough drive for backup, one for recovery, and two new drives taht you will want to initialize, zero, and use to build a new 2nd array. Say a pair of WD Black 1.5TB $159 each.
SoftRAID will test all your drive surface for defects during initialize (long format) and during idle background scan.

Installing Maverick on a MacPro with OS 10.7.5 and using RAID 1 with 2 * 1TB disks. 50% used.

I have a MacPro with 2* 1TB disks running Mac OS 10.7.5 using a RAID card running RAID 1. 50% space used.
How can I install Maverick safely (i have a Time Machine Backup). The install will not use the RAID set as a boot volume.
Reading the RAID manual there is discribed a way to create a bootabkle partition and RAID 5. But it starts out as a newly purchased configuration.
I have a used configuration. I would like to reuse the data.
Is there an installation section for my type of configuration?
THKS for all help.
Regards
Reint

I have found the answer myself already.
1.     Take a full backup on a medium which also will restore.
2.     Start your system with original start-up DVD.
3.     Start RAID pgm. Dissolve your current RAID set.
4.     Create a new RAID set with a logical volume on it.
5.     Restore from your backup your current system.
6.     Install Maverick on this system.

Can I create a raid drive with disk utility

I recently bought a 2TB seat gate external drive.
I want to use this drive with time machieve as well as set it up as a raid drive to strode photos.
Is this possible to do with disk utility?

Hello
you can not make any kind on RAID type with only one hard drive you need at least tow drive to perform a RAID volume
then , hard drive utility can be use to perform software raid ( Level 0 an Level 1 only )
for more info about RAID technologie http://en.wikipedia.org/wiki/RAID
Pierre

Replace Disk RAID 5 with hot spare disk form old disk

i'm going to replace a failed disk form server Proliant SL360 G5 and using RAID 5 with a disk has been used from older server.
my question is there any side effect in RAID 5 on server that has been replace from a failed disk with the old disk?

Hello @Oktandri,
I understand that you are replacing a failed disc on your Proliant Servier and are wondering if there are any side effects that you should be aware of. I am sorry, but to get your issue more exposure, I would suggest posting it in the commercial forums, since this is a commercial product. You can do this at HP Enterprise Business Community - Servers.
I hope this helps. Thank you for posting on the HP Forums. Have a great day!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
Dunidar
I work on behalf of HP
Find out a bit more about me by checking out my profile!
"Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

Set up a RAID 1 with four Hard disks with DiskUtility

I have a Sonnet Fusion-500 RAID enclosure with four hard disks of 500 GB (2TB total) connected to a Power Mac G5 (2x2.3 GHz, 2GB RAM, MacOSX 10.4.8) through a Sonnet Serial ATA PCI express card (Tempo E4P model). Since I have a total capacity of 2 TB, I would like to set up a RAID 1 (mirrored) and combine the four drives in a final working volume of 1GB, (and the remaining 1GB in the mirror volume). I've been trying to setup the RAID with DiskUtility, but I cannot get a working volume of 1 GB (only 500 GB -the size of a single disc-). Can anybody please give me some help in setting up this type of RAID?
The four 500 GB discs are OK, since I can create a RAID 0 (~ 2 TB) or initialize them al individual drives without problems.
Power Mac G5 (2x2.3 GHz & 2GB RAM) Mac OS X (10.4.8)

Glad I could help.
Why reward points?(Quoted from Discussions Terms of Use.)
The reward system helps to increase community participation. When a community member gives you (or another member) a reward for providing helpful advice or a solution to their question, your accumulated points will increase your status level within the community.
Members may reward you with 5 points if they deem that your reply is helpful and 10 points if you post a solution to their issue. Likewise, when you mark a reply as Helpful or Solved in your own created topic, you will be awarding the respondent with the same point values.

RAID mirror with software utility caused kernel panic every time

Using disc utility to make a mirror of 2 drives, click create and i get kernel panic and have to power off machine. if i try to start the machine with either of the two disks in it (together or individually) i get same kernel panic and have to power off.
The disks are in an external storage array (sonnet d500). I have a second storage array with raided disks in and i have raided disk inside the mac too. these all work fine..
originally 2 weeks ago i had the 2 disks working in a group of 4 disks set as a mirror of 2 striped disks. One disk in this setup failed and with this config you can never 'recover'or rebuild it - you get a degraded mirror and you can backup the data, but you must completely rebuild the raid again as the mirror of stripes never lets you add a new disk in again.period. not good.
I replaced the failed disk and rebuilt the mirror of stripes. this lasted a day until a second disk failed (all 4 were bought at same time so i was kind of expecting that to happen once one failed).
i replaced the second faulty hdd and thought about my disk usage and decided i would not make another mirror of stripes and i would make 2 mirrors instead for safe-ish storage and then transfer data to a striped raid set for editing from instead of direct from the mirror of stripes volume.
i tried to delete the raid but got a kernel panic
if i started the machine with any of the 4 disks i would get a kernel panic.
i moved the disks one by one into an older G5 running Tiger and managed to erase the raid info on 2 of them. The two new ones had some strange raid info and the Tiger machien thought there was an extra disk in the machine and would not erase or partition or allow me to destroy the raid whatever i tried.
I will be moving these now into an old XP PC to try to erase the boot records etc and erase them to be able to use them again in either mac pro or G5. painful..
so.. i ended up with 2 erased drives and have 2 new drives with dodgy raid info that causes kernel panics on the leopard machine and wont go in the Tiger machine.
The two erased drives are what ive now been trying to use in the mac pro to create a mirror - this now caused kernel panics when creating the mirror to start with and when installed in the machine at all. so i will be erasing them again in the tiger machine soon (its busy erasing with zeros another new disk that i added to the Tiger machine 2 weeks ago which seems to have some fault when raided!!! but thats another story).
so.. is anyone else having problems with creating basic mirror in 10.5.4 or is it just me??
i have a sonnet tempo e4p card with 2 external sata disk enclosures, latest firmware for the e4p card. all other previously existing raid volumes are working fine. i have one set of 2 striped disks, one set of 3 striped disks and one set of 2 stripes which are mirrored - all happy and working fine. but i cant make a new mirror of 2 disks...
I phoned Apple support and they said all raid info was kept on the disk itself and nothing on the actual machine and suggested i take the machine to an apple care centre for some tlc (although its disk i am having a problem with). since all my other disk arrays work fine i don't really want to rebuild the whole machine from scratch if i can avoid it.
Any suggestions of what i can try ??

well it turns out the new disk i bought just werent any good. my g5 powermac raid mirror issue was related to one new disk with lots of bad blocks (speed tools showed that up) so i have learnt my lesson on cheap non raid disks for raid..
am waiting on a couple of new ultrastar enterprise disks to tuen up so i can go back to the macpro and try to add a mirror again.
i am still stuck wih several new disks that i cannot format now in the macpro on leopard or on the g5 powermac with tiger.
ive tried softraid and that cant do it, speedtools pcformat util cant do it, disk utility crashes when i try to eras them and diskutil from termianl starts then doenst get anywhere and my pc sata card doesnt work so my last resort pc option still doesnt help me clear the partition map on these drives - ones that diskutility on leopard made for me - and drives which still cause kernel panics on the macpro if i put them in it..
here is what diskutil says on my g5:
/dev/disk0
#: type name size identifier
0: GUIDpartitionscheme *465.8 GB disk0
1: EFI 200.0 MB disk0s1
2: Apple_RAID 465.4 GB disk0s2
3: Apple_Boot 128.0 MB disk0s3
/dev/disk1
#: type name size identifier
0: Applepartitionscheme *233.8 GB disk1
1: Applepartitionmap 31.5 KB disk1s1
2: Apple_HFS Macintosh HD 233.6 GB disk1s3
/dev/disk2
#: type name size identifier
0: *465.4 GB disk2
/dev/disk3
#: type name size identifier
0: Applepartitionscheme *931.5 GB disk3
1: Applepartitionmap 31.5 KB disk3s1
2: Apple_HFS backup1T 931.4 GB disk3s3
/dev/disk4
#: type name size identifier
0: Applepartitionscheme *931.5 GB disk4
1: Applepartitionmap 31.5 KB disk4s1
2: Apple_HFS tempi 931.4 GB disk4s3
disk0 is the one with the bad partition info.
it thinks it has a double raid as the console shows on startup:
(both store45 and cache it thinks are on this disk - cache was my old mirror of stripes set on other machine, store45 was new name for my mirror, so seems like it hadnt deleted the original raid partition info before making new info which now kernel panics)
Jul 18 18:48:05 localhost kernel[0]: AppleRAID::degradeSet - starting the set "STORE45" (B9C48619-6B2C-4547-A01E-4864754EA7E2).
Jul 18 18:48:35 localhost kernel[0]: AppleRAID::degradeSet - starting the set "CACHE" (64F914A5-5556-4A44-AEE2-DC437868766B).
Jul 18 18:48:35 localhost kernel[0]: AppleRAID::completeRAIDRequest - error 0xe00002c2 detected for set "STORE45" (C0E139A4-2A6D-49C6-8F77-202AF7F9285D), member 50207BE5-E487-410E-8E8E-C4C4DCD2687B, set byte offset = 999527018496.
Jul 18 18:48:35 localhost kernel[0]: AppleRAID::completeRAIDRequest - error 0xe00002c2 detected for set "CACHE" (64F914A5-5556-4A44-AEE2-DC437868766B), member C0E139A4-2A6D-49C6-8F77-202AF7F9285D, set byte offset = 999527018496.
so currently i have 2 new 500gb disks which cant be partitioned back to anything at all on either machine. looks like i will have to buy a new pc to reformat them..
any suggestions of how to clear the partition map info and get them back to freespace ??

Which is better, Raid 0 with two hdds or 1 ssd?

Hi,
I have a macbook pro Mid 2010 with two open hard drive bays (thanks to the mce optibay.) I was wondering if it would be better to put two caviar black hard drives in raid 0 on my macbook pro, or have one vertex 2 drive as a boot/applications drive and another data drive.
Thanks
Sam

I understood what the hard-drive-in-optibay meant. Regardless, it's still two platter-based hard drives versus an SSD. An SSD will be faster in your situation. If you had a lot of platter-drives in RAID0 and you had some sort of hardware based RAID controller with battery-backed cache, then maybe, possible, potentially, that (really expensive) platter-based RAID0 could be as fast as a SSD. You don't have that and can't put that in a notebook, so it ain't gonna happen for you.
Now add to the mix, the fact that RAID0 will lose data if any one of the drives in the array fails. You have two drives in RAID0 versus one drive in a non-RAID. The RAID is twice as likely to have a drive failure just because you have more drives. If you made the RAID from two SSD drives, which are more reliable than platter-based drives, then you're got something interesting. But you're still twice as likely to have a SSD-RAID0 array failure compared to a single non-RAID SSD. (And more than twice if it's platter-based drives in the RAID0 versus a single non-RAID SSD.) So it's up to you to determing how much risk you are willing to take...and how much you can afford.
Also note that some Macbook and Macbook Pro models have slower performance on the SATA port for the optical drive. (One assumes Apple tried to save a few dollars and put in a older, slower SATA controller for the optical drive.) I don't know exactly which models but if yours is one of those, then you may get uneven performance on your RAID0. Whether that is noticable or acceptable to you, will depend on a lot of things that you won't know until you try. (e.g.: model of drive, apps you're using.)
And it's good that "backup is easy for you." With RAID0 for the boot volume, you're that much more likely to have a failed boot volume. (IOW, can't boot the Mac at all, which means you'll be using that easily made backup a lot. ) Ideally, workstations that used RAID0 used them for the data, not for the OS. For example, in video editing, the scratch disk needs to be fast, but could be RAID0 because you "threw away" whatever was on the scratch disk after you were done editing, and presumably saved/copied the final edited product to another archival drive. But the OS was on a typical single drive non-RAID (or a RAID1 or RAID5 if necessary,) not on a single RAID0 array for both OS and data.
In your situation, you can't separate the OS and data onto separate RAID arrays, so in general, RAID0 is NOT what you want, regardless of whether you use SSDs or platter-based hard drives. But again, only you can determine how much risk and cost you're willing to gamble with.

My iMac won't boot past grey screen and it didn't come with a os x disk

My iMac won't boot past grey screen with apple. I've tried booting in safemode but that didn't help and my iMac didn't come with a os x disk.

Take each of these steps that you haven't already tried. Stop when the problem is resolved.
Step 1
The first step in dealing with a startup failure is to secure the data. If you want to preserve the contents of the startup drive, and you don't already have at least one current backup, you must try to back up now, before you do anything else. It may or may not be possible. If you don't care about the data that has changed since the last backup, you can skip this step.
There are several ways to back up a Mac that is unable to start. You need an external hard drive to hold the backup data.
a. Start up from the Recovery partition, or from a local Time Machine backup volume (option key at startup.) When the OS X Utilities screen appears, launch Disk Utility and follow the instructions in this support article, under “Instructions for backing up to an external hard disk via Disk Utility.”
b. If you have access to a working Mac, and both it and the non-working Mac have FireWire or Thunderbolt ports, start the non-working Mac in target disk mode. Use the working Mac to copy the data to another drive. This technique won't work with USB, Ethernet, Wi-Fi, or Bluetooth.
c. If the internal drive of the non-working Mac is user-replaceable, remove it and mount it in an external enclosure or drive dock. Use another Mac to copy the data.
Step 2
If the startup process stops at a blank gray screen with no Apple logo or spinning "daisy wheel," then the startup volume may be full. If you had previously seen warnings of low disk space, this is almost certainly the case. You might be able to start up in safe mode even though you can't start up normally. Otherwise, start up from an external drive, or else use either of the techniques in Steps 1b and 1c to mount the internal drive and delete some files. According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation.
Step 3
Sometimes a startup failure can be resolved by resetting the NVRAM.
Step 4
If you use a wireless keyboard, trackpad, or mouse, replace or recharge the batteries. The battery level shown in the Bluetooth menu item may not be accurate.
Step 5
If there's a built-in optical drive, a disc may be stuck in it. Follow these instructions to eject it.
Step 6
Press and hold the power button until the power shuts off. Disconnect all wired peripherals except those needed to start up, and remove all aftermarket expansion cards. Use a different keyboard and/or mouse, if those devices are wired. If you can start up now, one of the devices you disconnected, or a combination of them, is causing the problem. Finding out which one is a process of elimination.
Step 7
If you've started from an external storage device, make sure that the internal startup volume is selected in the Startup Disk pane of System Preferences.
Start up in safe mode. Note: If FileVault is enabled, or if a firmware password is set, or if the startup volume is a Fusion Drive or a software RAID, you can’t do this. Post for further instructions.
Safe mode is much slower to start and run than normal, and some things won’t work at all, including wireless networking on certain Macs.
The login screen appears even if you usually log in automatically. You must know the login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
When you start up in safe mode, it's normal to see a dark gray progress bar on a light gray background. If the progress bar gets stuck for more than a few minutes, or if the system shuts down automatically while the progress bar is displayed, the startup volume is corrupt and the drive is probably malfunctioning. In that case, go to Step 10. If you ever have another problem with the drive, replace it immediately.
If you can start and log in in safe mode, empty the Trash, and then open the Finder Info window on the startup volume ("Macintosh HD," unless you gave it a different name.) Check that you have at least 9 GB of available space, as shown in the window. If you don't, copy as many files as necessary to another volume (not another folder on the same volume) and delete the originals. Deletion isn't complete until you empty the Trash again. Do this until the available space is more than 9 GB. Then restart as usual (i.e., not in safe mode.)
If the startup process hangs again, the problem is likely caused by a third-party system modification that you installed. Post for further instructions.
Step 8
Launch Disk Utility in Recovery mode (see Step 1.) Select the startup volume, then run Repair Disk. If any problems are found, repeat until clear. If Disk Utility reports that the volume can't be repaired, the drive has malfunctioned and should be replaced. You might choose to tolerate one such malfunction in the life of the drive. In that case, erase the volume and restore from a backup. If the same thing ever happens again, replace the drive immediately.
This is one of the rare situations in which you should also run Repair Permissions, ignoring the false warnings it may produce. Look for the line "Permissions repair complete" at the end of the output. Then restart as usual.
Step 9
Reinstall the OS. If the Mac was upgraded from an older version of OS X, you’ll need the Apple ID and password you used to upgrade.
Step 10
Do as in Step 9, but this time erase the startup volume in Disk Utility before installing. The system should automatically restart into the Setup Assistant. Follow the prompts to transfer the data from a Time Machine or other backup.
Step 11
This step applies only to models that have a logic-board ("PRAM") battery: all Mac Pro's and some others (not current models.) Both desktop and portable Macs used to have such a battery. The logic-board battery, if there is one, is separate from the main battery of a portable. A dead logic-board battery can cause a startup failure. Typically the failure will be preceded by loss of the settings for the startup disk and system clock. See the user manual for replacement instructions. You may have to take the machine to a service provider to have the battery replaced.
Step 12
If you get this far, you're probably dealing with a hardware fault. Make a "Genius" appointment at an Apple Store, or go to another authorized service provider.

Trying to setup RAID 1 with new SATA drives on xserve 2009 model

Trying to setup RAID 1 with new SATA drives on xserve 2009 model
I have an Xserve rack mount model Xserve 2.26 Quad Core (EMC# 2279) with an Apple RAID card, 24GB RAM (running 10.9 Server software)
Purchased two Western Digital 1TB SATA III 7200 RPM 64MB Cache Black WD1003FZEX drives
It came with three 160GB SATA drives. I'm leaving one of the original 160GB drives for the OS, but I want to replace the 2 other drives and set it up with RAID 1 (mirrored). I bought 2 brand new Western Digital 1TB SATA drives and formatted them on another Mac through Disk Utility with Mac OS Extended (Journaled) formatting. I then placed the new drives in the Xserve and booted it up. After I login it immediately gives me 2 error windows saying...
"Apple RAID Card
The Apple RAID Card installed in your system requires your attention."
It has two buttons underneath this message allowing me to either select 'Ignore' or 'Open RAID Utility'
I've tried to RAID the drives the Disk Utility and through the RAID Utility with no success.
I have both drives mounted on the desktop, as separate drives, but I really need to set these up as a RAID 1.
I've been reading other forums, where others have been able to get this to work by using a jumper on certain pins (5 & 6)of the drive to back down the transfer rate to 1.5 Gb per second. I tried that and it didn't work for me. Maybe I used the wrong pins -- I just don't know. I'm also wondering if there is some Apple firmware that is required on these drives? I'm asking for help from anyone who has gone through this same issue. Thanks in advance.

UPDATE -- I had an issue with the RAID card battery, it was dead and I have since replaced it. But I am still unable to setup the RAID 1 drive configuration. Does anyone know if it has something to do with the faster transfer rates on these new drives. Maybe they need to be clocked down with certain jumper settings on these Western Digital drives? Or am I fighting a losing battle because these drives don't have Apple firmware? Any help would be appreciated. Thanks.

Pegasus RAID Storage with Thunderbolt opinions / backup solutions?

I'm trying to get some opinions about the Pegasus RAID Storage with Thunderbolt
http://www.promise.com/storage/raid_series.aspx?m=192&region=en-global&rsn1=40&r sn3=47
since I've been researching some info for a friend who is looking for extremely reilable local storage solution for his record label.
Does anyone here use this? If so, do you use it with Time Machine? And also what type of RAID setup did you use?
I was thinking of a RAID 5 setup, since I feel that would be best in the long run should any drives fail, the backed up data would still be available on the other drives even if the performane is a bit slower until the failed drive is replaced. I would like to hear about people's experience with these drives and RAID setups. Also if anyone might want to suggest other disk options, please feel free to mention them here.
This would mostly be for "Setup 1" which is mostly audio production dedicated.
There is also a need for a "Setup 2" which would be mostly business/document dedicated.
Would it be better to get another smaller local back up solution for Setup 2?
We're not too keen on using Time Capsule for Setup 2 as their long term performance does have a great track record.
We're also going to be using Carbonite to have an offsite/remote backup of everything we have locally, but I'm not too familar with their services as well and if anyone here can comment on that I would apprecaite it. I've read up a bit on them and I would think to probably use their Business level service.
Any help, advice, opinions are welcome and appreacaited!
Thanks!

You can (re-)install to the Pegasus raid and boot from it.
However, you'll actually get a faster system if you use an SSD for the system drive and then just use the Pegasus for data files (and Time Machine backups of the SSD ...).
In any case:
Be sure to use the Promise Utility (download it from their site) to configure the RAID level etc if you don't want the default RAID 5 configuration. (For me I prefer RAID 6 if there are more than 4 drives, RAID 1 for 2 drives and RAID 10 for 4 drives – RAID 5 is just too risky; even configured with a spare).
If you use the Pegasus as your system drive, consider using RAID 10 on it. You'll "only" get 6 TB storage; but it'll be fast and quite safe (much safer than RAID 5).

SSD Raid 0 With 2011 MBP

I have a late 2011 15" MBP with 2x Intel SSD x25-M 160gb drives (1 in the main bay, 1 in the optical bay). I chose these drives due to the limited bandwidth in the optical bay (it's restricted to 3g vs the main bays 6g).
I have found an issue that is rather curious when trying to install OSX onto the machine and it concerns the disk utility:
OS X Recovery Disk Assistant created with Mavericks will NOT see either SSD installed in either bay using the disk assistant (no format or parition possible of either drive. I can place the drives in external cases and they work flawlessly i.e. you can partition each drive but when you put the partitioned drives back in the MBP Mavericks will not see them).
OS X Recovery Disk Assistant created with Lion will see BOTH drives and will configure raid 0 successfully (once installed I ran the Mavericks install and it did not see the drive with Lion Installed on it so no upgrade was possible - I ran the internet download as well as trying to install Mavericks from an external firewire drive using a previous download of OSX 10.9).
I am about to try installing Mountain Lion to see if it will detect the SSD raid drive (it's downloading now). If that works I will try to then upgrade to Mavericks (doing this incrementally kinda *****).
I'm wondering if anyone else has ran into this problem? I have seen plenty of YouTube videos of people putting two SSDs in their MBPs and running Raid 0 with plenty of success. I'm just wondering if maybe there's a brick wall with anything other than a 13" MBP?
Thanks in advance.

Kappy - I think you missed part of the information in my last post:
I HAVE SUCCESSFULLY created and installed OSX (Snow Leopard, Lion, & Moutain Lion) using the Disk Utility provided by Apple to install fresh versions of each and they work perfectly.
I DID NOT clone these from external drives.
I would like to install Mavericks (I don't care at this point about the raid config but it would be nice) but the disk utility version of Mavericks (that you need to install that specific OS) will not see the SSDs installed inside the MBP. Even if I install Mountain Lion on a single drive and then try to upgrade to Mavericks the drives are not seen.
Even if i could clone the Mavericks install from an external drive onto the internal raid I still can't see either drive to even do it.

HT4313 once it has rebooted and entered the installation, i get the message "it cannot be installed on this computer", i have created a new Raid Set, ive zeroed out the disks, only 10.6 or 10.5 server is allowed

I can see the restart button mentioned, but i cant get past the message that it cant be installed when it has booted up with the 10.6.4 server installation disc.
So far:
Copied installation cd to a hard drive and booted from it.
Created new raid set (RAID 5)
Zeroed out information on disks
10.5 server had no trouble installing
10.6 sl had no trouble installing
I used to have 10.6 server installed on the intended mac pro.
However i need to reinstall and it is not possible.
Any help would be very much appreciated

Where did you get the 10.6.4 install disk? Did it come with some other machine?
I ask because it sounds like that's the case - and it may only work with the machine (or, at least, model) it was shipped with.
However, if you have another 10.6 Server install disk, even an older version, just go with that and run Software Update after it's installed. The chances are you don't really want 10.6.4 anyway, right, but something later.

Steps to Setup a Raid 1 with a clean install of 10.5.2 and 2 new HD's

What are the steps I need to take to setup a RAID 1 with a clean install of 10.5.2 on a G5 tower with 2.0 Ghz dual processors.
(1) Any restrictions on the size or brand of the 2 drives I will install to replace the old drives? Are 500 GB, 750 GB or 1TB Seagate SATA drives ok for this appilcation?
(2) What format do I need for these drives and will Leopard take care of that automatically upon installation?
(3) Do I need a RAID controller card?
(4) Do I set up the RAID 1 when installing Leopard or after it is installed?
Thanks Ron

Creating RAIDs is discussed in Disk Utility Help from the DU Help menu. If you plan to install OS X on the RAID then the RAID must be set up before installing OS X. DU can be launched from within the OS X installer.
There are no current restrictions. In general use drives of the same make and model for best performance.
Drives must be partitioned using GUID partition mapping and formatted Mac OS Extended, Journaled. Partitioning and formatting are also discussed in Disk Utility Help.
You do not need a RAID card as you can create a software RAID using Disk Utility.

BIG PROBS with Creating RAID 0 with the Boot HD

Hey Everybody,
i have a Mac Pro with Mac OS X 10.5.3 and the folloring configuration:
1) a boot DH with 250GB
2) 2 x 500GB HD as a Raid 0 for Data
now i buy a new 250GB HD (then i have 2 x 250gb and 2 x 500 gb HDs) to create a nother RAID 0 with the boot HD... but that doesent work!
W H Y ? ? ?
i have look here in the forum fpr help, dont find a thread.
can some one help me? can i create a raid 0 with the boot hd? and when...how?
king regadrs..
christian

Lets say A and B are your 250gb drives with your current boot drive A. The two 500's are data drives C and D. My process would be to run Disk Repair on B, C and D. Then I'd run Disk Warrior on B C and D. Then boot from your DVD and run Disk Utility to repair A, just to ensure all is good. Then I would double check C and D to ensure they were duplicates, doing a Super Duper clone if needed. Then remove either C or D from your computer for safe keeping. Let's say you remove D. I would then wipe C clean and use SuperDuper to clone A to C and verify I have made a bootable perfect copy. You might even want to partition C into two drives and make two copies of A...just for temporary safety. After C has a boot copy, boot from C. Then you can use DiskUtility to create a simple RAID0 on A and B, and when that is done you can copy your C drive back into your A/B RAID. After booting from your RAID0 and then you can copy your data back from D to C (after reformatting C).
You cannot simply drag a drive from one to the other to copy it. It will not work as a boot drive doing that.
Keep in mind, if you do this, your A/B RAID has no backup. If you screw up an installation and hose it, you have nothing to fall back on. Time machine alone, or SuperDuper set to clone every day, or any of the commercial backup (or at least some of them) will give you more safety than a RAID0. RAID0 is great to save you from a single drive crashing, but more often than not the problem is installing some nasty piece of software that screws things up royally and RAID0 is wortheless for that. With your scenario, I'd buy another 250 so you can backup the RAID to that on a regular basis so if you totally screw up something you have a real bootable "last-known-good" image. After that get ANOTHER backup going to rotate off-site to save you from thieves and fires. At that point you can smile and know you really are reasonably safe. There are other ways to do this as others will explain. Several ways to skin this cat, but this is one option that will work.

RAID it with 1 or 2 disk

Similar Messages

Maybe you are looking for