I've just had the firmware upgraded to 1550 (don't know the patchname)
from 12U7 and, at this stage, it doesn't look like it has fixed the read
performance problem

I audited 2 tapes with ~25% utilization in a filling state (I don't expect
many gaps in data). One took 3 hours the other 5.
During the audit I saw bursts of activity, up to 20MB/sec, then almost the
same period where there was nothing but polling. This was not consistent.

I won't do any more detailed testing until the end of the week but it doesn't
look good at first glance.

Cheers, Suad
--
On Mon, May 14, 2001 at 02:47:01PM -0500, Ray wrote:
On Mon, May 14, 2001 at 02:47:01PM -0500, Ray wrote:
> Rejean,
>
> Have you heard a release date for the PGA3 microcode?  The 0CE1 and 12U7
> levels are killing me on tape reclamations and stgpool backups...
> Is there a site where i can get the 0BN1 code and downgrade the drives?
> I'm not sure if downgrading is supported/recommended.... but i'm getting
> desparate. Thanks for any info...
>
> -Ray
>
>
> On Thu, 10 May 2001, Rejean Larivee/Quebec/IBM wrote:
>
> > Hello,
> > you need the PGA3 microcode which should be
> > available early next week, date subject to change.
> > This is the microcode that should address the
> > performance issue you are seeing.
> > The 12U7.fmr microcode listed below addresses
> > another issue (read error) with the LTO drive but does
> > not address the performance issue yet.
> > The PGA3 microcode, when it comes out, should also
> > include the 12U7 microcode changes.