I've only had one customer venture into the IDE RAID space on a Linux
box. It worked fine until one of the drives failed, and the controller
corrupted *both* drives (probably because it didn't know one drive of
the mirror failed and it blithely kept syncing the mirror set).
I don't think anything short of mirroring 2 RAID-5 sets would have
prevented this - and I don't know of any cards that do that.
I don't remember the controller they were using though, but I'll try to
find out.
--bruce
Benjamin Scott wrote:
>
> Hello list,
>
> Tom Rauschenbach's question about lotsa IDE drives reminded me of a question
> I've been meaning to poll the list about.
>
> Does anyone here have any experience with ATA or IDE RAID cards,
> specifically under Linux? (For an example, check out the Promise
> (http://www.promise.com) FastTrak line.) It is an option we are considering
> for some of our customers who want to build a budget system but would still
> like to have mirrored drives. I'm not even after hotswap; all I want is
> something that will keep the system running long enough to schedule downtime
> for a replacement if a single drive crashes.
>
> Promise claims to have Linux support, but their information is a little
> sketchy. More importantly, marketing drivel != real-world performance.
>
> (For any fellow SCSI zealots like me: I'm well aware of the limitations of
> IDE. These people are going to be using IDE regardless, so I would at least
> like to give them the option of drive mirroring.)
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