On Mon, 7 Jun 1999, George Kahler wrote:
Could someone please explain what happens when you loose a single power supply in a shelf?
This depends on how many power supplies you have. If you have only one and it goes out, well you know what happens. If you have two the second one will continue to power the shelf with no problems.
Do I get 'double disk error' and loose the filesystem?
I think this depends on how you set up your raid sets. If you set them up per shelf then if you loose a whole shelf you should be able to recover quite gracefully after restoring power to the shelf. Otherwise it may not be so nice.
The thought is that if I have only one power supply in a shelf and it fails (failing 7 disks) it is like having multiple disks fail and therefore you loose the filesystem.
That's possible, but since the filer would crap out immediately after loosing the shelf it may be very easy to recover from it. Remember that the data should not be corrupted by any hard drive failures, so in principle it should be pretty intact after you turn power back on.
Tom