3ware disk failure -> hang -- SCSI backplanes

[loony at loonybin.org (Peter Arremann)]

On Friday 06 January 2006 19:02, Bryan J. Smith wrote:
> Les Mikesell <lesmikesell@xxxxxxxxx> wrote:
> > I have a non-critical IBM eserver with software raid
> > running so I yanked a drive to see what happens.
>
> Hold on a second ...
> Are you using a SCSI backplane?
> If so, that's the difference right there!  ;->
>
> SCSI backplanes and host adapters work very, very different
> on transient (or failure for that matter) than _any_ ATA or
> regular SCSI (without a backplane).

Hmmm... how is it a different matter? A scsi backplane has very little logic 
onboard other than what is required for the scsi id selection (unless that is 
hardwired too). I don't know any backplane that has logic that can understand 
the scsi protocol and could communicate drive removal or such to the 
controller... ?

Peter.