G-Drive combo or G-raid?

ok im gonna retire my lacie HD and now looking at the
Gtech stuff - for video editing and photos kinda
unsure of which one to use the G-drive or G-raid - i
guess the difference is one raid 0 and the other is
just a HD.
any suggestions which would serve me best
thx
I would say the G-Raid. I have the G-Raid 500 and it is just plain FAST and the design goes hand in hand with the Mac Pro. 2 Year warranty and not to bad tech support. You won't be disapointed.
William
You can also split the RAID into two indivudual drives if you choose. I kept the RAID set-up.

Similar Messages

How can I boot to a fakeRAID -Raid0 set drive from a non-raid hdd

Hi all,
First of all, my English is bad and I hope I can explain it what my problem is. Secondly, I need your expert help with my problem right now.
I'll just layout some hardware information and some history before I start. Currently, my motherboard has 3 hdd controllers which are:
1) Intel - 6 ports --> contains 2 sets of RAID drives = 2 x 60gb SSD (boot drive) and 2 x 500gb HDD (data drive) both in RAID 0
2) Jmicron - 2 ports --> 1 port is used by the DVDROM
3) Marvell - 2 ports --> I don't use these ports as they are slow and are so bad - currently disabled in BIOS
HISTORY: Before, my 2 x 60gb SSDs (RAID 0) contained Arch 64 + Windows 7 64 with Grub as the main bootloader. I remembered having a hard time setting up intel fakeraid with Arch linux + Win7 dual boot before, but fortunately, with your help, I found the solution and I've been using it ever since until today.
NOW is kind of a different issue. I bought a new 60gb SSD (just one). I totally reformatted everything with my 2 x 60gb SSD Raid 0 and I decided to just use that exclusively for windows, still in RAID 0. My brand new SSD will ONLY have Arch64 on it. So I installed Windows 7 first on my Raid SSD set. I plugged my new SSD to the Jmicron port so I can take advantage of AHCI. I don't want to mix my new SSD to the Intel Controllers since its not RAID anyway. Anyway, I installed Arch 64 on the new SSD in the JMicron Port fine.
Now here comes the problem, I set the Jmicron port where the Arch is installed to be the primary boot in the BIOS (since GRUB is there) and I can't boot to Windows! It gives me an error that It can't find the target drive (Win7 in the Raid 0 - intel ports). I've tried modifying the menu.lst and trying so many combinations and It still fails. Of course, I can boot to Arch fine since the drive is independent. It looks like grub legacy can't boot to fakeRaid drives if its not installed on that same drive.
Can you give me advice on how to fix this issue?
Also, I was just thinking, is there a 3rd party Windows Bootloader, that can be installed in Raid 0, that can pick up Linux and boot from it. I was thinking of just making the Windows 7 as primary boot in BIOS, with a 3rd party bootloader, then just boot to Arch.
Thank you!

Yes, I have redirected my User folder to the D: drive.
I know that some shared components must reside on the C: drive; that's fine. I just don't have room for the entire installation on there.
The real issue here is that, when a drive other than C: is selected as the destination, the CS6 package installs into a broken state every time, out of the gate, on my system. Some components get installed to D: and some to C:, but the various components of the programs seem confused about what exists where, as shown below:
I select a folder on D: as the destination folder for the install, and here is what I get:
64-bit versions of the package -- Program files are installed to the D: drive as specified, but attempting to start them results in a configuration error message stating that the program must be uninstalled and reinstalled, and lists "Error code: 1".
32-bit versions of the package -- Program files are installed to the C: drive against what I specified. The shortcuts installed in the Start menu for the 32-bit versions point to the locations where these program files SHOULD be, on the D: drive. If the Adobe folder containing the program files is copied over to the correct location on D:, these programs function normally with no errors.
I have the 32-bit versions working by copying the program files from C: to D:. I just want to get the 64-bit versions working as well.
Any help you could give would be greatly appreciated; I'm really looking forward to testing the CS6 suite on my system!

Using separate drive for OS and RAID for data

We have an xServe with 3x1Tb drives set up as RAID 5. I read in one of the forums that it's not a particularly good idea to create separate OS/Apps and data volumes on it. Is there a way therefore of utilising a fourth drive and direcly attaching that as the bootable OS/Apps drive?
Is this possible? Is it a viable solution?

Hi
Yes it is possible, as a viable solution? It depends? I've done this a number of times with an external firewire drive that is the boot drive. FW800 is obviously quicker than FW400. Whichever it is you are adding latency nevertheless. Ultimately its better to do this with internal drives as they will always be quicker which you will see in improved server performance.
What I have done in the past is to RAID Mirror or Stripe (using DU) 2x500GB as well as 2x750GB and even 2x1TB drives. The other bay has a single 80GB drive as the boot drive. Clone this boot drive periodically to an external FW drive. If the boot drive fails, boot from the cloned FW drive. You can run the server like that until a replacement drive can be fitted. Clone back and you should be back to normal.
As you have a RAID card installed, for RAID 5 you need a minimum of three drives, there is not much scope as you have already filled up all your bays.
Tony

Adding more drives to my x-Raid

hello,
I'm running out of space on my x-raid, and need to upgrade it asap. right now, there are only 4 x 180GB drives in it. my question is do I have to use the same capacity drives to expand my raid? I'd rather go with a larger hard drives if possible of course, but need to make sure it will be able to handle it.

Ok, as I've been reading more and more, I'm realizing that I know nothing about RAIDs on Apple I've done some on PCs but it was easier Oh MACs
anyway, here's my situation:
I have an x-serve raid with 4x180GB drives in the right side. Not sure why it's built that way, but it is, the way it is. I have only 25 GB of free space left. So I'm trying to figure out my best options. Originally I was thinking of adding 3 more drives 250GB each to the right side, and then merge them together with the main portion of my RAID. However, I'm reading now, there's a change I need to reformat my main slice which is not going to work for me. The type of the file system that I have is MAC OS extended (journaled), which as far I understand means it's HFS+ so I can't add more space on a fly and need to reformat my main slice?
If the answer for that is I do need to reformat, I'd rather start building a new RAID on the left side (say 4x250GB). In this case as far as I understand I'd have 2 standalone raids, which is completely fine, I'm not looking to merge them together, as long as I can use them both for file sharing. So my question is "can I?"
If I can, I guess I'd rather move some stuff from my main RAID to the new one.
Advises, comments are very welcome!

Help Regarding Hard Drive Upgrade (Method, Model, Raid)

Hello,
I have a W520 with two 500GB drives in stripped RAID configuration. One of the two drives has been making a crunching noise, followed by a beep.
I called tech support, and it was not very helpful. I have the next business day at your door warranty, and they are sending me a new hard drive to install myself, in about 5 business days (not sure how this is, given the warranty I've had, and never used until now...).
In any event, my drives are nearly full, and if I'm going to go through the trouble of changing one anyway, I'd rather just replace them both with larger drives.
My goal is to have the largest drives possible, and do the upgrade as easily as possible. I don't really care if RAID is in effect or not, as I don't feel I've noticed any real performence increase anyway.
I have in the past upgraded Thinkpad drives to larger drives, but these were in single drive systems. I'm "handy" with computers, in a do it yourself kind of way, but really just an amateur with this stuff. I'm concered about the dual drive aspect and the RAID aspect with this one. The tech support guy said they have no information to share about how to do a drive upgrade, that they just ship the drive (which I'm probably not going to use now anyway).
So these are my questions, and thanks to anyone who takes the time to share any advice...
1) What is the best, largest compatible replacement drives to get? I don't care about speed of the drive as much as size.
2) What is the best way to copy off/clone/mirror the existing content on my existing drives? I bought a device off Amazon to do this a few times - one of the times, the device literally started smoking... I'm not sure where I put the last one I used (where you connect to the new, bare drive).
3) Can I just disable RAID in the bios once I've copied the old drives to the new drives (or to an external backp-up drive)? If it is easier to just disable it and have two separate drives on my system, I'm fine with that.
Again, thanks for any help with this.
Jason

Hi, Denny.
...and when I took it apart and proceeded to
load in the new hard drive I noticed that the new one
did not have connector pins to hook up to the flex
cable on the hard drive.
So you removed the old drive, you detached the short flex cable from it, and now you find nothing on the new drive to connect the cable to? Am I understanding correctly?
If so, is it possible that the connector on the new drive is covered with some sort of temporary shield to protect it during packing, shipping and handling? If it is, the shield should come off if you pull it in the same direction you pulled the flex cable to detach it from your old drive.
I'm tempted to say you are surely missing something. For Hitachi to have shipped a drive that has no cable connector seems about as likely as for Toyota to have shipped a car with no tires installed, but I suppose anything is (barely) possible.

Has anyone tried a Western Digital SATA RAID hard drive on a non-RAID controler?

Because of a compatability problem, I want to try a different brand of SATA II drive on my non-RAID motherboard. The WD RAID drives have great specs but I don't know if they will work. WD says they are ONLY for RAID and not to put them on a non-RAID board. My theory is that they will be more reliable over the long term because they are a heavier duty drive.
Has anyone tried this and if so, what were the results?

I think there was some confusion about what I am asking. It is definately not a duplication of my other post and some of the information in that other post is incorrect because I JUST found out that my motherboard controller IS a RAID controller even though I am not using it as one. I will correct that when I am finished with this post.
The other post was about a specific model of Maxtor drive that doesn't work on my motherboard. This post is about Western Digital. The only reason that I even mentioned the word RAID in my previous post is that there is a known compatibility problem with RAID controllers and that drive. I wanted to emphasize that my problem was not the one of that known compatibility problem, but because it is a RAID controller, it might be that problem.
When you use the motherboard's controller as a non-RAID controller, you do format the drives individually, not as a RAID. I know that because I did it that way, not realizing I even had the option of using RAID on this board. That works fine on one model of Maxtor hard drive and does not work at all on the other model of Maxtor hard drive.
What I want to know now is: Will the Western Digital RAID drives will work on a non-RAID controller. The controllers on my add-in card is not RAID. Also, will that drive work on my motherboard's controller even though it is not being used as RAID.
Here is a link to the WD site's description of one such drive. There are several other WD RAID drives, this is just one example... http://www.wdc.com/en/products/Products.asp?DriveID=238&Language=en It does not state whether or not they will work well in a non-RAID environment.

Cloning a single drive to a new RAID 1 set

Hi,
Can I clone a drive from a machine (that has dual controller, RAID 1 capability but, was not setup using it) to a new pair of hardware RAID 1 disks using method/software in the same machiine, now. I think the machine should have originally used it's hardware
RAID 1 capability but, for whatever reason wasn't and now, I would like to do that. Can I use Acronis or Ghost to clone the single drive to the new RAID 1 set?
Thanks.
gk

It is possible to create a mirror from an existing JBOD disk, however the ability to do this depends on the capabilities of the RAID controller. In my experience, this is something found on high-end controllers, of which I know exist but have not used.
There is a method using some 3ware cards where you have to take a disk image of the single disk. Then you import it into a mirror but the drive is erased. Then you can redeploy the disk image onto the mirror.
Of course there is a big problem you may encounter. You would only want to do this if the disk was originally on RAID JBOD. If the disk was originally on IDE or AHCI modes, going through this process would likely result in Windows STOP 0x7B on first boot
after being cloned to the mirror.
If the data is important on this disk, I would recommend not trying to put it into a mirror. Instead you can use Ghost (or similar) program to do a sector copy to a new disk. I typically recommend that the new disk be a different size from the old disk so
you can easily determine which is which.

915P Combo for SATA RAID

Okay, I just recently purchased a 915 P combo. I'm trying to setup a SATA raid and I don't have the option. The bios version is 1.2 and it's southbridge is a intel ICH6R. When I go into ATA/IDE configuration [Enhanced] I only see IDE and AHCI but no RAID. I have two 200gig WD hard drives. I don't know if this means anything either but the post screen says found primary master IDE drive and then says found secondary master ide drive. I'm not sure if it should say SATA or something else then IDE. Any help would be greatly appricated.

I purchased the 915P Combo from NewEgg.com which says:
"SATA/RAID: 4x SATA, 2x ATA(VT6410) 133 with RAID 0/1/0+1"
which led me to believe that it could do SATA RAID. My 915P box even says "SATA RAID - supports SATA and IDE interface RAID 0, 1 or 1.5". On the front of the box, like someone else mentioned, there is a big sticker that says "Intel ICH6/6R Test OK" which I can understand would not necessarily guarantee it had the 6R.
Looking closer at the sticker on the side of the mobo box it does say "P4-800, 915P, ICH6, ...." and not "ICH6R", but until reading this thread, I didn't even know what ICH6/ICH6R was, and wouldn't have helped me before purchase.
I think this is misleading and I'm pissed off- I purposely purchased two SATA 160gig drives when buying the parts for my new computer, soley to do RAID striping, and now I can't. I will be asking NewEgg for a refund and will likely not be buying another MSI product.
IF I were to purchase another MSI board, what SHOULD I get to have the SATA RAID features? (and will accept my P4-3GHz 800M LGA775 530, and DDR2)

Hard drive configuration with Promise Raid controller

I plan on running two 30 gig 75GXP drives on the Promise controller in Raid-0 mode. I also have a 60 gig WD drive that I use for backups and for initial installation. During installation, I put the Win98SE setup files and all the drivers, apps, backup data, etc. on the WD drive and do a clean install from there.
My current (old) board is an Abit KT7-R with the Highpoint raid controller. Using the Highpoint controller, I am able to put the WD drive as a slave device and the controller treats it as a normal IDE drive. I'm moving to the 845 Ultra ARU. From what I've read, if you put a single drive on the Promise controller, it tries to set it up as a Raid drive? I don't want to risk losing my backup data on the WD drive to some attempt by the Promise controller to "raid" my single drive. So, where is the best place to put my WD drive so that I can install my system from it? I'm thinking about putting it as Master on IDE2. I normally run my CD as Master on IDE1. Once the installation is complete, I will remove the installation files from the WD drive and use it exclusively for backups. I have the WD drive in a Vantec EZ-Swap rack, and I normally keep it powered off unless doing a backup.
So, the plan is to create the Raid-0 array, Fdisk and format the array, and then load Windows from the WD drive, followed by all my applications. Is Master on IDE-2 the best solution for the WD drive?

hi
not very clued up on raid but it sounds right
if the wd drive is on its own on that ide do not jumper
as master you have to have no jumpers if all alone

Adding A New Drive To A Software RAID 5 Array

Edit 3: Just mounted the partitions and I can delete them because they contain nothing special. Is it safe to expand the 2nd partition of each drive to fill up the left over 22 GB?
Edit 2: I just deleted all the partitions off of my new drive and created one partition, then added it to the array and it works just fine. My next question is, can I delete all the smaller partitions and expand /dev/sd[x]2 to reclaim all the space (about 70 GB)?
One of my drives failed and Western Digital sent me a new drive, except it was an external drive instead of an internal drive, so I cracked it open and the label looked different. Turns out it's just refurbished and it's the same model as my other drives (WD Caviar Green 3 TB).
I've read through the wiki article on Software RAID and created the partitions exactly the same as my other drives, but while creating the main 2.7 TB partition it says that the ending sector is out of range when it isn't. I'm new to all this so I have no idea what to do. From what I've read there normally aren't this many partitions per disk, correct? I also have md124, md125 and md126 for the other partitions. md127 is for the 2.7 TB partitions. I took the array out of my Thecus N4520. I have a 3 TB external drive and a 1TB internal, along with another 500 GB drive. Would I be better off at destroying the RAID set and creating a fresh RAID 5 set, considering I'm losing about 90 GB if I don't need the smaller partitions.
/dev/sdc
Disk /dev/sdc: 5860533168 sectors, 2.7 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 00636413-FB4D-408D-BC7F-EBAF880FBE6D
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134
Partitions will be aligned on 2048-sector boundaries
Total free space is 43941 sectors (21.5 MiB)
Number Start (sector) End (sector) Size Code Name
1 41945088 46139375 2.0 GiB FD00
2 47187968 5860491263 2.7 TiB FD00 THECUS
3 46139392 47187951 512.0 MiB FD00
4 2048 20973559 10.0 GiB FD00 i686-THECUS
5 20973568 41945071 10.0 GiB FD00
/dev/sdd
Disk /dev/sdd: 5860533168 sectors, 2.7 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): C5900FF4-95A1-44BD-8A36-E1150E4FC458
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134
Partitions will be aligned on 2048-sector boundaries
Total free space is 43941 sectors (21.5 MiB)
Number Start (sector) End (sector) Size Code Name
1 41945088 46139375 2.0 GiB FD00
2 47187968 5860491263 2.7 TiB FD00 THECUS
3 46139392 47187951 512.0 MiB FD00
4 2048 20973559 10.0 GiB FD00 i686-THECUS
5 20973568 41945071 10.0 GiB FD00
/dev/sde
Disk /dev/sde: 5860533168 sectors, 2.7 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 2B5527AC-9D53-4506-B31F-28736A0435BD
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860533134
Partitions will be aligned on 2048-sector boundaries
Total free space is 43941 sectors (21.5 MiB)
Number Start (sector) End (sector) Size Code Name
1 41945088 46139375 2.0 GiB FD00
2 47187968 5860491263 2.7 TiB FD00 THECUS
3 46139392 47187951 512.0 MiB FD00
4 2048 20973559 10.0 GiB FD00 i686-THECUS
5 20973568 41945071 10.0 GiB FD00
new drive: /dev/sdf
Disk /dev/sdf: 5860467633 sectors, 2.7 TiB
Logical sector size: 512 bytes
Disk identifier (GUID): 93F9EF48-998D-4EF9-B5B7-936D4D3C7030
Partition table holds up to 128 entries
First usable sector is 34, last usable sector is 5860467599
Partitions will be aligned on 2048-sector boundaries
Total free space is 5813281700 sectors (2.7 TiB)
Number Start (sector) End (sector) Size Code Name
1 41945088 46139375 2.0 GiB FD00 Linux RAID
2 47187968 47187969 1024 bytes FD00 Linux RAID
3 46139392 47187951 512.0 MiB FD00 Linux RAID
4 2048 20973559 10.0 GiB FD00 Linux RAID
5 20973568 41945071 10.0 GiB FD00 Linux RAID
when I type in 5860491263 as the end sector gdisk does nothing, just wants more input. If I type +2.7T it accepts it, but really it just creates a partition that's 1KB in size!
I am able to create a 2.7 TB partition with an end sector of 5860467599, this won't screw anything up will it?
Edit 1: just tried it and got this
[root@ra /home/bran]# mdadm --add /dev/md127 /dev/sdf2
mdadm: /dev/sdf2 not large enough to join array
[root@ra /home/bran]# fdisk -l /dev/sdf
Disk /dev/sdf: 2.7 TiB, 3000559428096 bytes, 5860467633 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 93F9EF48-998D-4EF9-B5B7-936D4D3C7030
Device Start End Size Type
/dev/sdf1 41945088 46139375 2G Linux RAID
/dev/sdf2 47187968 5860467599 2.7T Linux RAID
/dev/sdf3 46139392 47187951 512M Linux RAID
/dev/sdf4 2048 20973559 10G Linux RAID
/dev/sdf5 20973568 41945071 10G Linux RAID
Last edited by brando56894 (2014-04-28 00:47:29)

Sorry I numbered them to show the flow of information, this was also just a place for me to store info as I worked through it. I managed to get it to work by creating a partition that takes up the whole drive and is actually 22 GB larger than all the other drives (since I found out that the had root, swap and home partitions that are no longer needed).
I should be able to resize the other partitions without a problem, correct? They're EXT4. Should I unmount the raid array and do them individually, remount the array, let it sync and do the next? Or just unmount the array, resize all of them, mount it and let it sync?

I want to add another hard drive to my exsisting RAID 0 setup - how can i do this?

Hi all, wonder if somebopdy can help me
I have my computer setup as follows:
1 x SSD - used for my O/S - windows 7 ultimate 64bit
2 x 1 TB hard drives - WD black series in a RAID 0 arrar
Now Im slowly but surely running out of space on the RAID ( the two hard drives) so im thinking about purchasing 2 x more of these exact same hard-drives to add to the RAID but iv never done this before and obviously I cannot lose any of my data currently
saved on this RAID - as iv deleted everything I don't use or want
what is the best way to back all my data up and how would I add 2 x new hard drives to my RAID 0 so that it will include 4 x 1 tb hard drives in total
thank you hope somebody can help

Hi,
You have to know that with a RAID 0 (striped set), if any drive in the array fails for any reason, you will loose all data on the volume. In this case, the more drives you add, the greater the chance for failure--with increased I/O.
Being you already have a RAID 0 setup with two drives, you cannot just break the stripe--you will loose all data if not backed up.
To effectively add another drive to your RAID 0 implementation, you will have backup your machine--making an image is the best option--break the array, add the drive and then restore your image.
About how to extend the raid 0, you may need some third-party tool to complete. Here is some references for you:
http://www.partition-tool.com/resource/extend-raid-software.htm
http://www.partitionwizard.com/resizepartition/extend-raid-0-partition-windows.html
Please Note: The third-party product discussed here is manufactured by a company that is independent of Microsoft. We make no warranty, implied or otherwise, regarding this product's performance
or reliability.
Please Note: Since the website is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.
Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact [email protected]

Maximum drive size for mirrored RAID

I'm want to set up a mirrored RAID with two 4TB drives that I have. When I put the drives in the tower (Mac Pro, OS 10.8.5) and open Disk Utility, the RAID button at the top does not show up for these drives. I only see First Aid, Erase, and Restore. Is there a max size for a drive that I'm exceeding? Or is it something else?

Hi - from the research I have done, there is a BUG in the OS. A solution is to boot with an older version of OS X and format the drive with the version of disk utlity on the older OS, or yank out the drive and put it in one of those 'drive toaster' type devices and format it EXTERNALLY. The problem seems to be localized when it's formatted with the drive INSIDE the MacPro.
You would figure that this would be a high priority fix, but NO. I went nuts for a few days trying to figure out WHY I could not see the RAID tab.
There is also third party software that has a more robust RAID solution. I have NOT tried it yet, but you should check it out.
http://www.softraid.com/
Alfred
PS: If you've resolved this problem, do share your findings here too!

What is the proceedure for replacing a hard drive (after failure) for RAID 5 with IX4-300D?

I have the IX4-300D with 4 hard drives (identical Seagate drives) using RAID 5.
Someday a hard drive will fail and I and I have to replace it. I read through the users manual briefly and I didn't see any documentation on how to perform a hard drive replacement and not lose any data.
So here are my questions:
1) I know per the instructions that Lenovo prefers using identical hard drives. Let's say in 2 years, 1 hard drive fails. Most likely, the same model Seagate hard drive will not be available. So will using a replacement hard drive by the same manufacturer with similar specifications work?
2) Will the front panel (or the software) tell me which hard drive has failed?
3) What is the proceedure for replacing a hard drive after a failure occurs? I read that the IX4-300D is not hot-swappable. So do I just power the IX4-300D down, replace the hard drive, and turn it back on?
Solved!
Go to Solution.

Hi exceptionalht,
It is best to replace the hard drive with one that is the same manufacturer, rotational speed, and capacity, so it does not have to be exactly the same model.
The front panel should show which drive has failed. If not you can check the web interface to find out.
That is the basic procedure for replacing a hard drive. You can see a more detailed instructions here: Installing hard drives in an ix4-300d
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Upgrade hard drive size with mirrored RAID

First of all thanks for your help.
I have a G5 XServe with (3) 250GB Drives
(1) drive is for the OS .... great perfect no change needed.
The other to drives are mirrored to eath other and hold 240GB worth of work.
I would like to buy (2) 500GB Drives to replace the 250GB Drives.
What is the easiest way to do this?
Idea 1) Will this work???
Break the raid by ejecting one of drives.
Put in one new 500GB Drive.
Copy all data from 250GB to 500GB
Eject 250GB drive
Put in other 500GB drive.
Re-set up Mirror with out losing data?
Idea 2)
Copy it all to an external drive....
Install new 500GB drives
Set up Mirror
Copy data back.
Hmmm... either way I'll have to set up all of my share points?
Thanks for helping me think this through.

Either path will work.
The first should be faster (the data only needs to be copied one), the second gives you a spare/backup copy of the data which might come in handy later.
Sharepoints are referenced by path, so as long as the new 500GB mirror is mounted in the same place as the existing 250GB mirror, your sharepoints should remain intact.

How to separate drives in a mirrored RAID without losing contents?

Perhaps senseless questions (non-issues), I'm not sure. Better to ask than to regret a stupid move ...
I have an external mirrored RAID array (running 10.4.11) which is generally my startup volume(s) for a G4 Mini. Obviously, I can also boot from the internal drive.
1. What happens if I disconnect them from each other (firewire cable) ? Is the drive that remains connected to the CPU still accessible?
2. If I (somehow?) "Undo" the mirrored RAID set, is data on either or both drives lost or do the contents remain intact and accessible?
3. If drive contents remain intact and accessible, then how does one "undo" a RAID set" ? Disk Utility "Help" and several forum searches have not been helpful (void of all pertinent content).
My apologies if these are "stupid" questions and thanks in advance for informed responses.

thanks - nice to know
However - when I open DU, select this raid set, choose the RAID tab, I see NO option of "delete" - only "erase" button. Perhaps I need to (re)start from a different drive.
IMO neither one of those terms is exactly intuitive for uncoupling a mirrored set. I do not want to delete or erase anything, just uncouple them so they are once again independent drives (without loss of content). BTW, since I typically boot (start) from the current set, I presume that either drive (once decoupled) will also be boot-able with preferences etc. persevered!

G-Drive combo or G-raid?

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