Mac Pro :: JBOD Or Software Share / RAID Drive
Jul 10, 2010
so here is my question/dilemma. I had a server running in RAID0 that had a drive fail so I lost everything. I will be using a large portion of the storage simply to hold media to stream to my TV, so having one large filesystem doesn't give me any benefits. Should I just set up the mac pro with every drive having its own share or should i RAID0 my drives? Im leaning towards a JBOD solution but someone more experienced may be able to give me a better point of view.
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Dec 24, 2010
I have a hex with 4x 2tb istalled on regular Mac bays and one ssd on the optical bay. They(4x 2tb) are configured as a giant 8tb JBOD. Now I purchased 3x 3tb and a sata card for the extra sata ports. Is there a way to create another JBOD with the the new 3tb drives and in the near future get rid of 2tb ones and put the 3x 3tbs on the regular Mac ports without loosing the data. All JBOD will be and was created using Snow Leopard's disk utility.
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Oct 27, 2008
I own a PowerMac G3 with 2 hard drive disks. One is a 20gb and the other is a 40gb. I would like to combine the disks with a pseudoRAID type called JBOD. JBOD stands for 'just a bunch of disks.' It's not really RAID. What I'm after is to see these two drives as one 60gb drive. Is that possible? I'm running Mac OS X Tiger.
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May 11, 2010
I was reading online that RAID1 is not a very reliable backup method, and is primarily for speedy recovery, over true reliability. I want to buy a dual-bay enclosure; something like the Icy Dock MB662UEAB-2S; [URL] People say they the best thing to do is get 2 separate external drives and backup with one, and use the other to make a copy of the backup drive, so you have 2 separate drives. Would it be fine to just to put 2x1TB drives into the enclosure, setup as JBOD then use Superduper to clone drive A onto drive B. Or is this not a good idea. Also can I stick a single drive into the IcyDock now and buy a second one later, as im a little shot of money at them moment. I got a 500GB old schol hardrive i could use for redundancy for the next 6 months, before i add a second drive into the enclosure.
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May 16, 2007
I have a PowerMac G5 and need to purchase an internal RAID card to create a RAID 1 mirror of the system drive... one that will allow me create a Hardware RAID 1 mirror, not software RAID through OS X.
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Nov 16, 2009
I have a RAID 0 set up with two 1.5TB HDs. I am doing some reorganizing and want to take all the data on the RAID 0 and move it to one of the hard drives in the RAID 0 and create to single drives. Is there any way of moving all the data from a RAID 0 onto one of the HDs?
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Oct 4, 2006
I have a PowerMac G3 running OS X Server 10.4.7. There is an 80GB ATA boot hard drive and a SATA card and two 250GB SATA drives. One SATA drive is existing and has data on it; I just installed the second one because I want to mirror the 1st drive onto the 2nd one.My questions are: how do I do it? When I try to create a RAID set in the Disk Utility GUI, it says all data will be destroyed. I cancelled that.So I tried diskutil enableRAID mirror disk1, which told me I could only mirror volumes.The volume name is RAID, so I tried diskutil enableRAID mirror /Volumes/RAID which gave me an error "Error enabling disk to RAID Could not unmount disk (-10000)"
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Aug 4, 2009
My current setup consists of my boot drive (250GB), a striped RAID (500GB) for storage and a 1TB Time Machine Drive.I have recently bought a new 1TB internal drive and would like to replace the striped raid with this drive, thus freeing up two 250GB drives - 1 which i will keep internally and the other will go into a external enclosure My question is can i just copy the files from the RAID to the new internal or do i have to use software to clone it?
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Dec 14, 2009
Does anyone have an OWC Mercury Elite-Al Pro Qx2? If so any idea how to get it into JBOD mode? In the book, it shows to set the selector to 0 if using a software raid, however if I do that the rebuild light just blinks (why when it shouldn't be in a raid?) and does nothing even after 36 hours. All other raid modes that I have tested on this work flawlessly.
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Dec 16, 2008
I have two 750 gb drives that I want to put together as a JBOD as a Time Machine volume. Is there an advantage to having the drives in an external enclosure, such as this one, vs. inside my tower? If inside the tower, I'm concerned that if there's a failure of my boot drive that I would lose the JBOD TM backup.
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Mar 18, 2010
I'm still working out the details on purchasing a new MacPro. My Apple sales rep tells me that I can greatly increase the launch speed of applications and the system OS by purchasing 2 hard drives and using Disk Utility to stripe them together into a "software RAID". They claim it will be faster and more reliable than a single SSD. I know I've asked this question before, but the answers were over my head. I don't know anything about SATA raid cards, or SSD's except for their benefits. But I'm pretty sure I can stripe two drives together and make a software RAID.
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Dec 2, 2009
I just bought a Guardian Maximus RAID1 kit and I have two 1TB drives in it. I'm using it over Airport Extreme as an airdisk (mac osx 10.6.2)
My question is simply: am I running a risk by partitioning it into two partitions? Should I ever have to rebuild the failed disk (which I understand is really simple with the Guardian Maximus) - will it have trouble doing two partitions? I'm using one 500gb partition for time machine and one 500gb partition as redundant itunes/media.
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Jan 28, 2009
I have a Lacie ext hard drive with 2 x 250gb HD that were one RAIDed into a single 500gb HD. I ran this update Lacie firmware update: http://www.lacie.com/support/drivers...r.htm?id=10053 And now my HD will only show up as two separate HDs of 250gb instead of a single RAID HD of 500gb.
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Aug 28, 2008
2x160 GB drives in a RAID-0 holding my boot driveI want to move it do: A) Ideally 2x250 GB drives in a RAID-0 or B) A 400 GB drive.I've tried:Straight up copying/restoring in Disk Utilit Carbon Copy Cloner File-levelCarbon Copy Cloner Block-levelI can copy everything, but I wind up not having the system recognize the new drive(s) as a boot drive.
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Apr 8, 2009
Is it possible to mirror a RAID-0 array to a single drive?
For example, I will be setting up 3x1TB on a RAID-0 (striped) array and i want to mirror it to one 1TB drive. Is that possible or do i have to resort to Time Machine ... ugh
and YES i've already STFA! no answers as of the start of this thread
[URL]
-edit i assuming Time Machine backs up the "volumes" and not the "drives"
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Oct 8, 2009
I recently bought a Lacie 2big Raid drive with 2 x 1 TB drives for backup of my images (I'm a photographer).
Everything was fine, mounted the drive, formatted, and used SilverKeeper to transfer all my previous work onto the drive which was formatted with RAID 1 (mirrored).
The files all seemed to transfer across fine, size was the same, and I had a quick flick through the drive and images where all ok. So needing to use the drive that these images CAME off, I formatted that, and put that to use where it was needed.
So in summary I had the Lacie RAID 1 as my 2 sources of backup at this point. I thought everything was fine at this point.
Now maybe a few months on when I have to track back for files, I noticed quite a few folders had been corrupted, for example, opening a job folder, and every type of image file, jpeg's, tiffs, and PSD's would all say they are corrupt when I tried to open them in Photoshop. Some of these jobs where 20GB of RAW and edited images, all corrupt.
So, reading through my manual for the Lacie, it said I could remove the 2nd drive, without altering the 1st drives data.
With this I removed the second drive, trying to narrow out any problems with the RAID. Mounted the disc, same corrupt files.
I then replaced the second drive back to the RAID, which the instructions said was fine, and it would just rebuilt the mirror, so I left if for a few hours while it rebuilt the second drive.
Now my problem, the RAID has finished mirroring the drives, and now my MacPro or Powerbook won't let me mount the drive without formatting it which I obviously can't do, It brings up Disk Utility when the drive is switched on and wants me to format the drive to mount it.
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May 1, 2008
I have a macpro with 4 x 1tb drives
Is it possible to get a highpoint raid controller and put those 4 drives in a raid 5 array (and then create partitions inside that array) - or do you need to have 1 drive by itself for the operating system, and then create a raid array using the remaining 3 drives?
Lastly, are the highpoint 3500 series a decent card? and fully compatible?
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May 20, 2009
I have a new Mac Pro Quad 2.93 with the Mac RAID card installed with four 1TB drives setup in a RAID 5 array. When creating the volumes in the RAID utility, you can not edit them, resize, etc. If one large volume is created in the RAID utility, you can then partition that one volume using the Apple Disk Utility, which then allows you to resize if needed.
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Sep 13, 2009
I'm using the software RAID right now. Everything is set as RAID 10. I want to move to a RAID card� if I keep it as RAID 10 will I still need to redo everything?
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Sep 22, 2010
I'll be going with the OWC SSD(s) ExtremePro for the boot drive................ either a 2x60 OSX SW RAID 0 or single 120. I'd rather err on the side of safety but always looking for more umph If going RAID 0 would it be advised to go with a dedicated controller?My data drive will be 2x1T RAID 0.
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Dec 31, 2008
Compatible to PCI-e 2.0
Boot to Mac OS X with Mac Pro (2006-2008) Models
Boot to Single Drive or RAID Array
Well,finaly it's bootable and raid bootable.Does anybody know is ti bootcampable?I just come back from windows,I find I lost so much,I can't even use foobar2000 and my 9800gt.
I hope it will be a positive answer
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Feb 27, 2010
I already have a 2x 1tb RAID 0 drive (totaling 2tb). I butchered my old XP machine and ripped out its 1tb drive.My question is, can I add a that old XP 1tb to the exisiting RAID 0 combination?Before you say, I triple backup all my files which are mainly photos so I am aware of the dangers of RAID 0.
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Nov 23, 2007
Is it possible to add a new 1TB drive to an existing concatenated raid(1TB+1TB)? and is there raid capacity limit, or it's unlimited?
Information:
G5
Mac OS X (10.4.10)
Dual 2.5 GHz PPC
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Mar 15, 2009
I thought i'd share this with everyone if anyone has been interested or curious to do the same, I have installed a Raid 0 setup in my 2.4ghz Aluminum macbook using 250gb and 320gb Seagate 7200.3 2.5" drives with 16mb cache each. The reason its 2 different sizes? Because i'm stupid! I bought the 320 thinking the other drive was 320 aswell- only realising once i had installed both that they were different sizes. Not to fear- the raid would be slowed down by the slowest drive, specification wise they are both the same so no problems there. In fact in my case it creates something which is quite awesome- individual boot partitions on each drive.
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Jul 19, 2009
I purchased a 128gb Patriot Torqx to run as the boot drive for my Mac Pro. I know that the new Intels are coming but I am happy with the Patriots and wanted some instant gratification. The machine is definetly snappier but doesn't quite have the pep as my MBP running a 256gb SSD as the sole HDD.
I have (3) 1 TB 5400 rpm drives in a striped RAID array. It seems sometimes when I start an application that lives on the SSD boot drive, the other drives begin to run as well (I can hear them spinning). Any thoughts on what could be done to speed up my system and also make sure that the SSD runs as independent from the traditional Hdd's as possible?I am running a early 2008 Intel 2.8ghz machine, 8 cores, 6gb RAM.
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Dec 26, 2009
i have Snow Leopard running in a RAID, and just a separate single drive installed for windows 7. Problem is, when i try to go to bootcamp assistant, it tells me that RAIDS aren't supported in bootcamp. I don't want to install it on my raid, just on the other single drive. Does anyone know a workaround or how to do this?
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Dec 31, 2009
I recently installed os 10.6 on my MacBook, upgraded to 10.6.2 and everything was still working fine. Then, without thinking, I ripped out my shuffle and plugged in my mirrored (software) raid array of 2 drives. I immediately got the dimmed screen / you must restart your computer in all languages-screen. Now, whenever I plug in the raid into the usb the computer's screen goes dim and I get the same error message in all languages. I've tried booting with the install disk, still crashes. I have all my most important files on that drive.
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Jun 12, 2009
I was looking at this HD: [URL]. Could someone please summarize for me what is a "Dual-drive Storage System with RAID?" I have some ideas of what it is... it involves mirroring, and holding two copies of data to make sure one doesn't lose data, correct? This is a 4 TB drive... what if I want 4 TBs worth of storage and not two copies of 2 TBs worth of storage? Am I allowed to turn mirroring off and get a straightforward 4 TBs worth of storage? Please feel free to throw in any quick facts about RAID you may want to.
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Feb 18, 2010
I was wondering if anyone had successfully installed and 2nd hard drive in their iMac?I have a 2 year old 2.8 24'' iMac and the performance just isn't cutting the mustard, it's all hard drive related and I already have a decent 1TB drive in there.I was thinking of perhaps swapping the optical drive with a second hard drive for RAID0, but not too sure if there will be space and was wondering if the optical drive is a standard SATA connector, or if there is some way I could run a SATA+power cables externally?
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Jan 28, 2008
ive put 4 of the hitachi 1tbs in my new mac pro.. and i really want to do Raid on them eventually.. and buy the pricey apple raid card.. i'll do it.. but speed wise:
How fast is a Sata connection straight from HD>Motherboard... ~75mb/s?
Is the Raid 5 config with all those drives much faster... around ~110mb/s?
Do you know if there is anyway to get a 5th drive into the raid 5 array? using the ODD space.. or some externals too... i need as much as space as possible...
And boot camp wont work with raid card anymore? I was thinking to have the startup disc be a raptor to increase speed on the apps, how would it integrate with the raid card, etc
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