Getting started the hard way with RAID

[Marius Gedminas]

On Thu, Dec 01, 2011 at 06:56:30PM -0800, Kevin O'Gorman wrote:
> I'm in the late stages of recovering a broken system.  The original
> had a hardware raid controller managing a mirror set that contained
> some stuff that was not backed up. Fortunately, one reason it wasn't
> backed up is that it wasn't really vital.  Nevertheless, I'd like to
> get at that stuff.
>
> The hard part is that I no longer have that RAID controller, just the
> two drives.  The controller was a 64-bit PCI card, and the new mobo
> cannot handle it.

Have you googled for the model and manufacturer of that RAID controller?

AFAIU most hw RAID solutions have their own custom data/metadata formats.
Chances are you can't access the data easily without a working hardware
RAID controller of the same manufacturer, but perhaps you're in luck,
and your particular metadata format is supported by dmraid.

I'm not familiar with dmraid, unfortunately, but I've glanced at the
manual page online, and it seems to support some kind of autodiscovery.
Have you tried it?

Marius Gedminas
-- 
Linux became only possible because 20 years of OS research was carefully
studied, analyzed, discussed and thrown away.
		-- Ingo Molnar
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