Mac Pro :: Temporarily Removing RAID Hard Drives
May 24, 2010
I have a Mac Pro with all hard drive slots filled. The first two disks (includes startup disk) are independent, and 3 and 4 are set up in a RAID 1 mirror. I have to take my computer into the Apple store for a repair and I'd like to just take out all the disks except for my startup disk... however I'm not sure how to go about doing so for the RAID. If I take the drives out, and boot up the computer with them no longer inside, will the computer "freak out" and/or will the computer no longer recognize the RAID if I put them back in again later?
If the latter is the case, will the data be lost or would I just have to set up the RAID again... and if I do that, will that also cause the data on the drives to be lost, or is it possible for it to mirror them again without needing to make changes to the data?
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Feb 2, 2009
I currently have a 2TB WD mirror edition that is setup in RAID 1 so it will mirror all my data. Now I also have a bunch of other drives laying around which I also feel the need to back up and currently I am doing this by doing a whole bunch of dragging and dropping and copying and pasting etc etc etc and this is making me very tired. I know that a setup is possible in disk utility but I am not at all sure about how to configure it so I wont lose any of my data.
Some details about my setup:
Mac OS X 10.5.6
PowerPc G5
Harddrives: two 1TB WD MyBooks, and two 500gig WD Mybooks --> these pairs need to mirror each other and make my life less of a hassle.
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Jun 4, 2012
So I have a Mac Pro with Bay 1 acting as my regular start up drive. I also have three other Western Digital 500GB hard drives that I have been using as a RAID backup system. However, when I place all three of the RAID hard drives into Bays 2, 3, and 4, the computer will not boot. It never reaches the Apple logo, and continually tries to restart. So I figured one of the hard drives was corrupt.
However, I have tested all three hard drives in Bay 2 and the computer will boot just fine. I have also tested each bay individually (i.e. the same RAID hard drive in each of the Bays seperately) and the computer still boots fine. I can even power up with any two hard drives in Bays 2 and 3. The only time I can't power up is when all three of the hard drives are occupying all three of the extra bays.
Also, none of the RAID hard drives show up in Disk Utility or on the desktop. Shouldn't I be able to view them as normal internal or external hard drives being plugged into my Mac? They do show up in RAID Utility. Is this normal with RAID hard drives, or should they always show up in Disk Utility?
I created a new RAID backup with two of the drives together (Bays 2 and 3) and it recognizes it in System profiler. However, I want to be able to use all three drives for the RAID.
Info:
Mac Pro, Mac OS X (10.6.8)
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Mar 14, 2009
What is, in theory, the fastest raid type, when I use two hard drives.
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May 2, 2010
I have read that it is "a shortcut to disaster" if I do a RAID0 (or any other RAID for that matter), if the Hard Drives are dissimilar. I have the original HD 149GB (now 5 years old), and have bought a new 1T HD, and was planning on setting them up as a striped RAID0. Is this a bad idea? Should I purchase a second 1T HD and do a RAID0 or RAID1 setup instead?
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Aug 15, 2010
What should I be doing to my drives before building arrays with them?
Hitachi do a Drive Fitness Test and Seagate something similar but I have not been able to get either to work on a BootCamp Windows partition.
I tried formatting in Disk Utility and pulling some data on and off. I'm now running a scan for bad blocks in Drive Genius (is this worth it? It's going to take about a week at this rate). Anything else I should do?
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May 3, 2010
I have been reading about people taking a SSD drive for Boot and OS and using a second HD for their data using MCE's Optibay hard drive enclosure.
I would love to go this way but I can't justify spending all the cash on a SSD yet. Could I put in 2 500GB 7200 rpm drives and RAID 0 them? I know this wont be as fast as SSD but it should be faster than a single hard drive and hold a lot more storage for less $$$.
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Nov 21, 2008
I'm thinking about getting a Mac Pro tower from apple, and then buying two 500gb hard drives to place them in a raid 0 config. My question is, is setting up raid as easy as taking out the existing hard drive, placing both the new drives into the mac pro, and selecting raid 0 from OSX when I reinstall the operating system?? Or does the Mac have something similar to a Bios setup where I select that?
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Jul 11, 2009
I just got a used mac pro quad. I plan to use it for video production- final cut pro, pics - aperture, and music production- protools. THe computer came with 3 - 10k rpm 160g hd's. Two of them are set up as a raid 0. I like the idea of having a faster drive as a boot drive, but 160 seems kind of small to me as the drive to run memory hungry apps and the operating system. Am I right? I could go to a 300g 10k rpm drive. I am also thinking about getting a bigger drive, say a 750g or 1 tb 7200 rpm. Should I use this as the boot drive or as a secondary storage drive?. If it's the boot drive should I add the other 160g 10k drive to the raid or keep it separate? I assume that neither way would be wrong, nor create a problem, but since I haven't put anything on it yet, I'm wondering what would be the most efficient way to manage my files and get the most out of my computer.
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May 21, 2012
Since upgrading to Mac OS X 10.7.4 I am unable to mount any of my G-Tech Raid hard drives.
Info:
iMac, Mac OS X (10.7.4)
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Jun 27, 2014
Experiment Results: Temporarily removing Events and Projects from library
REASON: I wanted to test removing events and especially ram-hungry projects from FCPX 10.1 to unclog the app a bit. I've been getting lots of spinning wheel time and dropdown windows saying projects unopened and unneeded were being loaded.
METHOD: I copied a library to another drive and experimented by manually removing some events made up entirely of projects. Why not remove them? There seems to be hysteria about manually touching the library but no one relates an actual incident that highlights how things can go wrong.
I copied a library to another drive and experimented by manually removing some events made up entirely of projects. The projects are early versions of segments of feature length doc I most likely will never need to bring back in. After removing an Event that had only Projects, FCPX opened no problem and a lot quicker.
ODDITY: Removed Events names still appeared with the twirly triangle beside them tho the event icon didn't appear and the Events were empty. I tried trashing them but couldn’t. I then closed fcpx and removed media. Reopened no problem. Closed.
Returned Event folders and media to their proper place, reopened no problem. The projects were all there tho their icons were blank at first but then after a couple minutes pics started appearing in them and pretty soon all seemed normal. I opened projects, they worked, no problem.
Moving projects & media manually between events—This may be where things get dicey, but you could do this manually with earlier versions of FCPX. It's not something I would do normally since ti's too easy to do in FCPX. But since I have this copy I might try it just to see what happens. If you don't experiment it's not science it's religion.
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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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Aug 22, 2009
I have (2) Patriot Torqx 256GB SSD's in a striped RAID array powering my MBP. Where I have enjoyed the incredible performance, it really killed the battery life of this machine.I am in the process of "un-striping" them now and reinstalling OS. Any advice on best configure files to best utilize the new configuration? Should I keep boot files and documents on different drives?
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Jan 18, 2009
The time has come to move to a RAID setup in my Mac Pro. Ideally I'd like to run 4 1.5TB SATA drives in a RAID 5 or 10. It seems there are a LOT of threads on this topic all filled with different information, so I have a few questions...
Which RAID cards are bootable?
Do any work like the Apple card and interface with the drives through the logic board?
If not, how do you connect the internal drives to the RAID card in their stock bay locations?
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Jul 1, 2009
I just got a brand new MAC PRO desktop. It came with a 600GB HDD. I purchased a second identical internal 600GB HDD. I wanted to do setup a RAID 1 using these 2 drives. Currently the main drive has the OS and all my other apps installed. I installed the 2nd drive and was fooling with disk utility. I'm not sure how to set this up however. I tried numerous guides online but I just cant figure it out.
MAC PRO (takes up to 4 internal drives) - currently installed 2 identical drives
Leopard
Using Disk utility
The RAID tab says "online" and the status is green (indicating the RAID is working). However on my desktop i see the 2nd hardddrive mounted with no contents in it. I just want to able to use the 2nd drive as a mirror so this way if one fails I'm still up and running.
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Oct 1, 2008
I just got the apple mac pro raid card today, but after I connect it and all 4 SAS drives, the MAC OSX Installtion program can not detect the SAS at all, I open the RAID Utility but no dirve there, the battery is in charging status.
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Apr 2, 2009
I'm about to configure my 2006 MP with one of Apple's RAID cards using RAID5. I currently have 4x 750GB drives that I can use, but I can see needing more space in the not too distant future. When I do need more space, can I simply drop in a 2TB drive, let the RAID system reconfigure itself, and repeat this until I have all 4 drives in place? Is there a better or different way to do this? I know that if one of the drives is larger than the others, then only a drive space equivalent to the smaller drives will be used in RAID5. After addition of the fourth drive (per the above scheme), will the array then use the full 2TB of each drive?
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Mar 26, 2008
I have a 8-core MP 2.8Ghz with 10gb ram and Ati 2600HD. I'll someday replace the ATI with a quadro (all my application is 3d/CAD/Design) I'm installing 4 of the WD640 drives, they arrive on Friday.
I would love to order the CalDigit RAID card but after searching I finally figured out it's not available until next month.
That said, I need my system to start working ASAP and I don't want to wait if I don't have to.
I'm a designer, I need fast scratch so some striping needs to be involved. I also need data protection. At this capacity Time Machine isn't going to be of any use and I'd prefer redundancy anyway.
The 4 WD640s are replacing: 1 750gb 7200.11, 2 WD SE16 500GBs, and 1 320GB (Apple Stock Drive).
I would like to sell some of those drives to defray the cost of this endeavor but I'm open to keeping 1 or possibly 2 as external drives or stuffing one into the optical bay with a converter.
I want speed and reliability, of course! But really the largest motivator here is the combined drive aspect. Having so many volumes is driving me nuts.
My intention had been RAID 5 or 6 but I now know that Apple Software RAID can't do this. So now it seems with software RAID 0+1 would be the only option.
Realistically, does the cpu performance degradation outweight the speed gained from striping the drives? It's so difficult to determine bottlenecks.
Any thoughts on my best bet without/before the RAID card arrives. Can I migrate the array after installing the card without data loss?
If I just JBOD the drives can the concatenated set be broken up ever? I was thinking I could JBOD until the card came.
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Sep 29, 2008
Anyone know if it's possible to attach two USB hard drives to a Time Capsule via a USB hub, and configure them in a RAID1 configuration and use them as my Time Machine backup disk? I would then use the TCs internal drive as network storage.
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Nov 19, 2008
I have a bunch of Mac Computers here and I want to make a file server for them with about 5 drives in an RAID array to be a little bit secure. I am fairly certain how to go about and build myself a basic file server for a bunch of PCs networked together, but I am not sure about how to do it for a network of Macs.
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May 31, 2009
Can I install a Raid Controller and connect say two drives to it, specially for windows? Will it be bootable? Or perhaps even connect the iPass of the four internal bays to an Adaptec 5405 and get a separate cable for my Mac Drive. Will both be bootable? What if I just want to boot Windows for now? I sometimes need to convert my early 2008 Mac Pro into a rather beefy Windows workstation and the lack of HW Raid is rather irritating.
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Dec 7, 2007
Thinking of using 500GB and 750GB internal drives for a raid 0 startup disc (software raid obviously)?
Information:
Dual 2.5 G5
Mac OS X (10.4.11)
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Aug 12, 2009
I have two choices.
1. Apple's Mac Pro RAID Controller, Four Drives, RAID 0+1. One big disk, highest cost.
2. Or, some other RAID Controller (?), Three matching drives, RAID 5. Then, 1 big drive for OS/Applications/Time Machine.
I'd probably move my Home folder to the RAID Array and have just my data striping amongst those drives. Has anyone had a dilemma like this before? I like the idea of hardware separation of my Home folder from the OS.
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Aug 5, 2010
Does anyone know if it's possible to have two sets of striped drives using a single hardware RAID controller? I'm looking at the ARC-1210 and it seems like you can have more than one set of striped drives, but I'm not positive. My plan is to have two small SSDs set up for the boot drive and two HDDs for storage, each pair set up with RAID 0. Can this be accomplished using a single controller? Note: I'd just use OS X's software RAID but I need to keep the cores freed up for computation. I'm not concerned with redundancy--just speed.
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Nov 9, 2006
i am considering running a Raid 0 configuration on my Powermac 2x300gb drives. Right now i have duplicated everything onto a 250gb drive and have successfully booted with this drive. Does anybody know what steps i need to talk to Raid the two 300gb drives and move everything back onto them?
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Oct 15, 2009
So I have followed a bunch of the 'MacPro with mac raid card users wanting to do bootcamp' threads. I have attempted all the hacking required but have not been successful. I heard that bootcamp 3.1 will fix this problem possibly... so in the mean time I would like to remove my SAS drives and raid card and just use the sata drives that I have to do Mac OS and Windows.
I have removed the card but when I plug the drives in and boot up the machine, the drives are not recognized. Is there some plug that I need to reconnect somewheres?
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Sep 13, 2009
I'm looking at the specs page for the MacBook Pro and it reads this...
Your MacBook Pro comes standard with a 5400-rpm Serial ATA hard drive. Choose a hard drive with a faster speed for greater performance. Or you can choose a solid-state drive that offers enhanced durability.
Basically suggesting that the HDD option has a performance advantage over the SSD, but is this the case? I always thought SSDs could read & write quicker because they use solid-state flash memory as opposed to hard disks.
I want to go with the 256GB SSD but I want to know how it ranks in speed.
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Jan 25, 2009
I have a Imac 20 with a small 3.5 hard drive and I have bought a bigger 360 gig 3.5 hard drive to replace the old one. I have the new one in an external case with USB 2.0 right now. Is there some way I can transfer the entire contents of the old hard drive on to the new one and then swap out the old drive with the new drive and not miss a beat?
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Sep 5, 2010
I have to hard drives in my powermac. And I am running out of space with the one that has the OS on it.
I want to make the 2 internal hard drives i have appear as one so i can still install and use things that say "must have mac OS installed on this drive to use" or whatever.
i've heard of people using RAID to join them, but i want details on how i could do this.
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Jun 26, 2009
I used to have boot camp on my machine and now I reinstalled everything like brand new. But it still shows that dedicated space as windows hard drive. I wish to eliminate this and just let my original be the only one.
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