Can you please help me with this issue? Michael Graff 6, 1 16 There are no moving parts and as long as they are kept cool and have clean power, they almost always outlast their usefulness. The only thing you will need to be careful of is which controller you replace it with. You may have trouble booting from this drive because it will be missing drivers and boot paths for your new controller, but that can be addressed manually. For whatever reason, different controllers do RAIDs differently.

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RAID Options on IntelĀ® Server Board S5000PSL

I had a CMD raid controller fail, and after a bit of easy sniffing around on the drives, I found that esrt–2 drive had the RAID set configuration stored in the first few blocks. This will allow you to back up the data to another ezrt-2, then wipe your disks, build a new array and put your data back. Posted March 1, We have failed RAID cards often enough to make this a consideration.

So if you have a failed controller and can’t replace it with the equivelant you’ll probably be SOL. One particularly annoying fact is that you can no longer take a single drive with data on it and make it into a RAID1 volume – unless the drive was created as a RAID member, it must be wiped. Share this post Link to post. You will be able to leave a comment after signing in. Someone told me that if the controller fails, you can’t just get a new controller because you’ll have to reformat the drives.

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Server Fault is a site dedicated to professionals; novice questions are off-topic.

Typically yes the config is per controller type. Unfortunately, RAID has taken a softwzre step backwards in the last decade. I’ve done it in the past. Posted September 30, We are working on a fix. I was trying to install xen 5.

Apologies for the inconvenience. This is usually stored on each drive. Recovery from a hardware RAID controller is not difficult.

The notion that if one hardware controller fails, you may need to wipe the drives is inaccurate, but I think I know what they may have been referring to. Even if it can be done without issue, you still have to know what you’re doing.

[SOLVED] Why is it Intel Embedded Server RAID Technology II limited to 2 Terabyte? – CentOS

Skipping that, and writing a simple program to read from each drive in the correct order including RAID 5’s rotated parity I managed to recover all the data. You can actually take either of the drives that were part of a RAID 1, connect them to eaid computer via any controller and the data will be there.

The performance may be bad, or it may not let you rebuild, but the data will be accessible. Or you could just decide that on controller failure you’d fall back to the most recent backup. If the array can be moved between ingel “use disk config or use controller config” type prompt or can accept non-identical drives in the sata/sa, there is likely some abstraction happening.

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The only thing you will need to be careful of is which controller you replace it with. Based on my home experience – do not spend your time with riad below RAID 5: I’ve been wanting to do a raid 1 setup in my home with a pair of sata drives.

Upvote if you found this answer helpful or interesting. However, almost always the new controller will recognize the RAID and mount it in some sort of limited mode. Sign In feature is currently unavailable and you will not be able to post new content.

Michael Graff 6, 1 16 It will normally also work on different models within the same range, and often across generations sataa/sas the same manufacturer. Untel are no moving parts and as long as they are kept cool and have clean power, they almost always outlast their usefulness. Xen Ent 4 works ok.

A lot of your rant is somewhat controller specific – especially the one about transforming single disks into RAID 1.