[Cialug] sata raid

[David Champion]

david l goodrich wrote:
> On Tue, June 12, 2007 9:02 am, Daniel A. Ramaley wrote:
>> On Tuesday 12 June 2007 08:39, dave at 58ghz.net wrote:
>>> I also considered the software raid. It would be
>>> suited to my needs, but I felt that recovery from a
>>> drive failure would be faster and easier with a
>>> hardware solution.
>> With hardware RAID it may be easier to recover from drive failure, but
>> how easy is it to recover from a controller failure? If recovery is
>> difficult, does it matter (i.e., how probable is a controller failure
>> versus drive failures)?
>>
> 
> So what's the story with recovering from a controller failure?  I know
> software raid can be recovered by configuring it identically on another
> computer.  Can you just drop in another controller when the first one
> dies?
>   --david

Depends on the hardware. Some raid controllers write a bit of data on
the raid volumes, so if you put in a new controller (or do a firmware
update  or something that loses the current config), then it will
rebuild the raid based on that data.

-dc