Hardware :: Can I Boot From A RAID 1 (mirror) In My G4?
Oct 2, 2008
I don't know where I read about this, but I am getting ready to redo one of my systems. Currently it has 2 identical 250GB Hitachies, which use Super Duper every Sunday to backup. I tried doing a RAID 0 back in like 2004 on a system that had 4x60GB. I found out through trial and error and then later reading that you can't boot from a RAID in a Power Mac G4. But like I said earlier I don't know where I read this, but someone stated I could boot from a RAID 1 (mirror) in my Power Mac G4. Is this true? or not? Is it possible to boot from a RAID 1 in a Mac G4 but not RAID 0?
Something tells me this isn't going to work. I have a 10% glimmer of hope that maybe it will just see the drive as a regular drive. This would really be great. If anyone knows the answer to this puzzle please feel free to let me know...
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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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Feb 14, 2010
On my 2009 Mac Pro, OS X's disk utility seems to allow the provision of making a mirror RAID or a stripe RAID.
Is it possible to shove in 2 drives, make a RAID 0 for two of them, and then add in 2 more drives to make a RAID 1 out of that RAID 0? (a RAID 0+1?)
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May 9, 2010
I have a 1TB disk. It is now almost full. I just got a new 1TB disk and I want to make a mirrored RAID set of the two. If I create a RAID set in Disk Utility, does that erase my first disk? Or does it just mirror everything to the second?
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Sep 28, 2009
Having never set up a RAID config I was hoping I could get a little confirmation on setting up. Firstly, all data will be backed up using a NAS (maybe a time capsule), so at the moment I am just looking to mirror the primary drive of a Power Mac G5 incase of hardware faults.
The G5 is acting as a server and I therefore want to arrive at a situation that if a drive fails, the machine will still boot perfectly from one of the redundant disks (and of course notify the user to the failure), i.e. a bootable RAID 1 configurationAs I understand it, I can only achieve this using a dedicated RAID controller (i.e. this can't be done via a software raid)? Is this the case?
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Nov 24, 2009
I have taking the plunge and bought a new i7 iMac. On my current machine I have 2 WD external USB drives (1TB) in RAID mirror, done through Disk Utilities. I am looking for advice on the correct way to move this to my new machine. Do I simply plug them in, and OSX does the rest? The data is very valuable, and I don't really have enough space to copy it all / back it up before i move it. Being a mirror, it is essentially is my backup.
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May 23, 2012
Literally just got shiny new miniMac Server with the dual 70GB internakky hard drives/disks with OS X 10.7.$ LION pre-installed. What a nice machine in a super cool box Seemed to bootup and run fine!Now my issue (there will be more for this MAC newbie):How to setup AND more importantly (item B below) CONFIRM that a RAID MIRROR is working? Want nothing fancier than 2-nd drive is exact duplicate of 1-st drive at all times. That is, an 'active and full up-to -the second" backup of the main 1-st drive.I have done nothing to 1-st drive as it came from APPLE.When I try to setup RAID set using DISK Utility, I get message about system(1-st drive) can't be used in a RAID or such.
yet I can add 2-nd drive to what I tink is a RAID set and then 'Enable' it.It seems to add another entry to thr left-side of drves list panel but not sure that 1-st and 2-nd drives are BOTH in the new "RAID SET' or that the set just consists of the "single" 2-nd disk? B. I don't think that 1-st drive data is actually being duplicated to 2-nd drive.For instance, how do I know that it was 'caught up' to match 1-st drive AND then is [code]
Info:
Mac mini, Mac OS X (10.7.4), Pre-instaDual Internal drives/disks
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Aug 20, 2014
Can I just remove one of the drives and what are the consequences of the removal. I would like to go from a mirrored raid to a carbon copy of the disk which would be updated weekly and use Time Machine in between.
Do I open up a can of worms - my suspicion is that if I want to do that I'll have to reformat the RAID with the loss of all data.
Any workaround short of making a copy, removing the raid and restoring the data?
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Jul 28, 2006
I want upgrade our xserve from 2 x 250GB mirrored discs running Mac OS X 10.3.9 on xserve to running 1 x 250GB system disc (keeping other as spare) and 2 x 500GB mirrored data discs. (Then upgrade to Tiger).
Can I break the software mirror with:
diskutil destroyRAID /dev/disk{x}
or does this destroy the data too? Would I be left with two working, bootable discs or just two RAID slices? If the latter, how can I convert them into 'normal' bootable discs?Would it be better to upgrade to Tiger first? Or not make much difference?
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Oct 19, 2007
I have 2ea 250GB internal HD. One with my apps and system on it and the other with no data. How do I mirror my drive with the apps and system? Or is that possible?
Information:
Dual 2.3ghz PowerPC G5
Mac OS X (10.4.10)
8 GB ram / 2ea. 250 GB internal HD
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Apr 8, 2010
First the problem started when the mac would go to sleep I couldnt wake it up. The monitor light would just blink green and the screen would be black. Also programs started just randomly crashing, for no reason. Mainly Firefox (tired Safari, same thing.) Now the computer will not boot. Meaning I start it, it chimes, i get the grey loading screen the little wheel spins for mabye 15 sec, then the screen goes black and the monitor light flashes green. HOWEVER, I can hear the computer continue to load, and if i move the mouse around and click I can hear things being accessed.
Specs
1.25g Dual processor
ATI Radeon 9200 video card
2g ram
so I have done the PRAM thing, I took out all the ram, and reseated it, and I moved the video card to different slots, I also tested the other 2 connection on the card, still with the same result... the s- vid didnt even pull a signal.
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Jan 25, 2009
I decided that I couldn't wait for Gainestown and ordered a 2.8x8 MP today. I'm going to get another 8GB of RAM (I assume 10GB in matched pairs will still perform at full speed). My real dilemma is a Boot/Storage solution-I'm moving from a Dual 867 G4, so all my current drives, both internal and external are IDE, which basically means I'm starting over as far as internal drives goes. The G4 power supply gave out so I'm getting this external enclosure to put my old drives into for file recovery. As far as new drives go, I can't figure out what to do. I'll spare you my million iterations of drive configs I've sketched over the past two days.
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Nov 28, 2010
I have a 2009 MacPro. SSD has the boot and apps from the 2nd Optical Drive. Original 1x4TB drives are in Raid 0 and have all the data (home folder etc). They also have the original OSX and apps which are no longer in use since everything boots off the SSD.
I want to erase the 4 raid drives (disconnect raid all together) (data all backed up to a drobo). Use first 3 drives as new storage and the 4th as bootcamp.
however, when I try to erase the raid data drives, it says it can't unmount the disk (yes, have no apps running other than disk utility from the SSD apps)
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Nov 8, 2010
it has been a while since my last post, but i am running into a big issue with my mac pro. I just recently got a areca arc 1210 and i am trying build a bootable RAID 0 through the card. I have gotten snow leopard installed on the raid, but the system refuses to boot to the raid. Any assistance would be MORE than
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Jan 12, 2011
So I'm considering a new boot volume for my Mac Pro revolving around this RAID controller, since I have had great experience with 3ware's products in my Linux boxen and it really seems like $700 for the Mac raid controller is a bit much. My workflow revolves very heavily around virtualization. I've been thinking about a variety of options for SSDs and hybrid drives and even just fast laptop HDs. Am I crazy for considering 2.5" drives other than SSDs? I'm thinking of 2.5" drives because I put a pair of them in the lower optical bay without issue. The amount of storage needed on the boot volume is probably in the range of 150-200GB. Getting SSDs that size may not be in the budget. Thus, I am currently considering either a pair of 320GB WD Scorpio Blacks or a pair of 250GB Seagate Momentus XTs. I'm not sure the hybrid Momentus drives are worth it. Additionally, I know that a lot of SSDs don't fully support RAID in their firmware. Thus, I am reluctant to buy one, let alone a pair, since a lot of places don't seem to have terribly generous return conditions for SSDs. Is this a fool's errand? Should I just relegate my VMs to other storage and get a smaller SSD for the OS + apps?
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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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Jun 23, 2009
Can anyone please suggest a RAID card for a MAC Pro that will also let me get into Boot Camp.
I have a Rocketraid 2644 connected to an external box with a RAID 0 array but it forces me to boot into OS X and nothing else
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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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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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May 9, 2008
I'd like to set up a separate 3-drive striped software Raid0 solution in Vista to increase write performance for FRAPS capturing, but need guidance on how to proceed.
Mac Pro 8-core 2.8GHz "Early 2008" 14GB RAM WD 640GB x4
Drive1 - Mac OS 10.5.2 / Windows Vista Home Premium 64-bit (Boot Camp 2.1)
Drive2 - Striped Raid0 1/3
Drive3 - Striped Raid0 2/3
Drive4 - Striped Raid0 3/3
The 3 latter drives is what I'm trying to configure, but don't know how to do so for my Vista partition. Is this even possible? If so, does Vista have this built-in capability, or would I need to download a third-party software raid utility?
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Jul 7, 2008
i would like to reserve my 4th bay for windows only drive and a software raid will be used for these.
what would you think is a better set-up,
3x internal drives (all of the same model, probably WD 640's) set in raid 0 (both serve as boot drive and scratch disk) occupying bays 1, 2, and 3. In this set-up, everything (DVD's, music, photos, final cut media) would be stored on this array.
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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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Jun 5, 2010
Can you just install a vanilla PC raid card into a MP, stripe a few empty drives in a RAID 0 config, and make OS X ignore both the RAID card and the NTFS striped drives when switching to and from Leopard?
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Dec 1, 2010
This is what I've done so far: I set a Stripped Raid Set with two drives: a Seagate 500GB @7200 and the original WD 640GB @7200. Before setting the Raid, I partitioned the latter in two: a 500GB and a 160GB, so the extra space is not lost. The Raid was created successfully (using the disk utility Raid - no special hardware). So far, is this OK (specially the partition part)? Now, my question is, what's the best way to migrate all my apps and data, from the original single boot drive I've been using until now, to the Raid - so the benefits of the raid are most apparent?
a) As soon as the raid was set, still inside Disk Utility, I used the Restore function, using the original boot volume as source, and the raid volume as target. This is in progress, with an eta of 4 hours, but I can stop it at any time... is this the best way?
b) Another way that occurs to me, is to clone the boot volume to the Raid using Superduper or CCC....?
c) Or perhaps I should make a clean OS install in the Raid volume, and then use migration assistant or other method to bring the apps and data to the raid?Or, something else I haven't thought of...?
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Aug 31, 2007
Is it possible to boot a Powermac G5 Dual 2 GHz using the built in software Raid 0? I know that this can be set up using disk utility but wondered if it was possible to boot from the RAID set.
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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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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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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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Mar 8, 2010
I've been looking at the Mac Mini server for my next computer purchase, but I've had a few things confuse about the set up. I've seen at least one thread where someone got their Mini server to use RAID 1 settings on the dual internal drive set up.
What I want to know is will a RAID 1 configuration play nice with Boot Camp?
Is it even possible to use boot camp on a RAID 1 configuration?and if it is possible, would the RAID 1 duplicate the Bootcamp Partition too?
These are three important questions because I like the idea of the RAID 1 security and because I'll be pairing it with a Blu-ray drive I'd most likely have to install Windows via Boot Camp to watch them.
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