 InssomniakThe GlitchPremium
join:2005-04-06
Cayuga, ON
kudos:1 | Adaptec 2805 breaking raid 1? Does anyone know the procedure to taking a raid 1 array back to a single drive? The controller is an Adaptec 2805 hardware raid.
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 MospawMy socks don't match.Hawaiian Jellyfish
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| Will you need to put the drives back in RAID 1 again?
If not, as long as a proprietary format is not used, you should just be able to remove one of the drives and use it as normal.
If you need to put it back into the RAID, there will be a specific procedure for doing that that's generally documented by the manufacturer. |
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InssomniakThe GlitchPremium
join:2005-04-06
Cayuga, ON
kudos:1 | I don't want to put it in a raid 1 array anymore, just use it as a single bootable drive on the controller. I am creating another raid 1 with 2 different ports on the same card.
(I think that's possible?)
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 DoggPremium
join:2003-06-11
Belleville, IL
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| reply to Inssomniak
You can load the RAID software and delete the RAID and/or remove the drives. Then configure (if the drives remain attached to the same controller) the card appropriately.
If the card won't be used, then simply connect the drive(s) to the new port. You will likely need to partition and format the drive.
Note that breaking a RAID loses ALL of the data on the RAID. So if you need that data, it will need to be copied off of the RAID onto another drive first.
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InssomniakThe GlitchPremium
join:2005-04-06
Cayuga, ON
kudos:1
1 edit | said by Dogg:Note that breaking a RAID loses ALL of the data on the RAID. So if you need that data, it will need to be copied off of the RAID onto another drive first.
Oh this is the part I didnt want to hear.
Its a vmware esxi 4.1 server So I cant load the management software.
So now Im not sure how Im gonna do this now 
I didnt think breaking the raid 1, would lose all the data.
The plan was to remove the bad drive, break the raid, and carry on with the one good drive.
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MospawMy socks don't match.Hawaiian Jellyfish
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| reply to Dogg
said by Dogg:Note that breaking a RAID loses ALL of the data on the RAID. So if you need that data, it will need to be copied off of the RAID onto another drive first.
Not necessarily.
For a RAID 0, RAID 5 and other non-mirrored types, it most certainly will break when removing a drive. For a RAID 1, however, where the drives are mirrored, it likely will NOT break. It might depend on the controller, but I've done it with the on-board RAID 1 on my machine and have booted off of one of the drives outside my RAID with no problem.
It's even possible to put the RAID 1 back together, but you've got to be really careful doing that and select the correct drive as the "master".  |
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| reply to Inssomniak
Never, ever, EVER start messing about with a RAID config until you are certain that you have a full backup of the data on the array.  |
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InssomniakThe GlitchPremium
join:2005-04-06
Cayuga, ON
kudos:1 | said by HarryH3:Never, ever, EVER start messing about with a RAID config until you are certain that you have a full backup of the data on the array.
This I know, my whole world sits on this RAID1.
I pulled the bad drive, the array sits as degraded, running off one drive, fast RMA'd the bad drive, replacement in 2 days I hope, plug it in, rebuild and carry on. easiest way.
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| reply to Inssomniak
Greetings from Adaptec Technical Support!
If you have a bad drive in your RAID 1, your array is already running on 1 drive. The RAID is in a "degraded" state in that the data is still accessible, but you are missing a disk and the array is vulnerable. You should backup your data immediately and replace the failing drive as soon as possible to avoid data loss.
As for the array, you should be able to replace the drive and rebuild the array automatically. Note: you may need to initialize the replacement drive and set it as a hot spare before the controller will pull it into the array.
You can do all this through the Adaptec BIOS utility (press ctrl-A when the controller is POSTing) or through remote arcconf or Adaptec Storage Manager in a guest OS.
To use ASM or arcconf you'll need to first install the CIM and Remote arcconf (latest version available here: »www.adaptec.com/en-us/speed/raid···_zip.htm).
If you have any questions, feel free to contact technical support by visiting »ask.adaptec.com and submitting an incident.
Regards,
Adaptec by PMC Technical Support |
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 psafuxPremium,VIP
join:2005-11-10
kudos:2 | reply to Dogg
said by Dogg:Note that breaking a RAID loses ALL of the data on the RAID. So if you need that data, it will need to be copied off of the RAID onto another drive first.
Only if there is no redundancy such as the case with RAID 0 (striped) where data is spread across two drives. In nearly every RAID array there is redundancy though.
The issue often lies with the fact that the drives are tied to the drive controller with a filesystem that may not be read natively in other devices. (EXT is a good example of a common RAID filesystem format). You can't just throw a drive with an EXT file format into a slave caddy and expect Windows to read it. Third party applications make the job a breeze though.
Just an FYI. |
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