[Gllug] 3 Ware RAID (not)

Andrew Halliwell ah at gnd.com
Fri Jan 14 15:25:26 UTC 2005

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
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