Re: [tlug] OT: IO Data storage unit RAID recovery?

[Ian Barwick <barwick@example.com>]

2010/1/6 Kalin KOZHUHAROV <me.kalin@example.com>:
> Hi Ian,
>
> We (Deloitte) do some data recovery as well, but have no experience
> with this exact model. Actually it is a NAS, which complicates things
> a bit. Those devices are usually hardware RAID with some kind of
> specialized kernel/userland and usually locked. It may be software
> RAID (md), however it is usually not.
>
>  If your company can afford Jim's professional service or ours - go for it.
>
> If it is not so time sensitive (we are a bit busy now) I can have a
> look as well.
>
> All in all, if you want to be on the safe side, assuming all drives
> are hardware-wise working, get another set of drives, image each one
> with dcfldd (dd is OK) to have a backup and then start looking into
> each and figuring what kind of RAID it is. The duplication is VERY
> time consuming if the drives are big. but this is the only way to make
> sure you don't screw something (plus you'll have a backup set once you
> fix it).
>
> If the enclosure is not that expensive - get a new one. PSU failure
> may mean badly stressed motherboard, broken flash/firmware, etc.

That's one possibility, I could imagine something involving controlling
the first disk has been fried.

> Calling IOdata may help as well diagnose the problem.
>
> Feel free to call my work mobile (080-2112-3298) if you think I can be of help.

Thanks for the feedback, I might get back to you if we don't get anywhere.

Regards


Ian Barwick