Got a call at 4am - RAID Gurus Please Read

Stuart Henderson stu at
Wed Dec 10 10:32:55 UTC 2014

On 2014-12-09, symack <symack at> wrote:
> Server down..... Got to colo at 4:39 and an old IBM X346 node with
> Serveraid-7k has failed. Opened it up to find a swollen cache battery that
> has bent the card in three different axis.

> * Can I change from an active (ie, disks with data) raid 5 to raid 10.

Even if the hw/firmware supports it, raid level migration is risky enough
at the best of times, and totally insane on a known-bad controller.

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