in need,
it's the backup software that is supposed to provide this
functionality (TSM does it)
forget about mpxio

s-

On 10/18/07, Engle, Victor <[EMAIL PROTECTED]> wrote:
>
> > From: Torrey McMahon [mailto:[EMAIL PROTECTED]
> > What you could do is make all other paths a standby path and,
> > in case of a failure, use the alternate path. However, the
> > trick is getting backup software to use the alt path and
> > perform all the related error recovery in a failure mode. In
> > the vast majority of cases backup software will fail the
> > entire job if the the tape device is marked as failed. You'd
> > have to change it to ping the available paths from time to
> > time and try to restart automatically to get any benefit from
> > alternate paths to the tape device.
> >
>
> I would think that if the tape drive is under mpxio control then the
> backup s/w would see only 1 scsi_vhci path. I like the idea of having 1
> active and 1 standby path to the tape drive. Even if the backup server
> has to restart the backup job it was working on at the time that is much
> better than having the tape drive offline until I replace the HBA.
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