[Gllug] 3 Ware RAID (not)

[Andrew Halliwell]

And verily, didst Joel Bernstein announce to the hordes:
> 
> On Fri, Jan 14, 2005 at 02:20:59PM -0000, Ken Smith wrote:
> > I had a configuration with a 3-Ware ATA RAID controller with 3 Maxtor 40Gb
> > disks in RAID 5 running a RedHat EL system. The second disk began to log
> > errors and just in case I started an extra backup. While the backup was
> > running the array failed completely. I/O timeout messages were showing on
> > the console. 
> 
> I've had problems with old IDE cables [ie, probably not up to spec for
> UDMA66] and IDE bus timeout errors. New round cables fixed this.
> 
> Are you running smartd? Does the IDE RAID controller present the
> different drives as separate physical devices under /dev? If so, what
> does smartctl -h /dev/blah report?

With a 3ware the drives aren't displayed as seperate to the OS...
(most raid controllers don't do that either)

But... smartctl actually has a way around that with older 3ware cards.
(8000 series and below, doesn't work with 9000 series yet)

You can specify 3ware and probe individual drives with it, read the man
page.
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