We are in the same situation as Dave, as we were transferring tapes to a
new 3584
robot and labeling them upon checkin to the TSM servers. I also had the
same concerns
about using the our old tapes with the E07 drives but monitoring the
moved tapes
and observing them is use without any issues relieved our worries.
Lastly on the scratch
tape reuse if you have your devclass set to use the higher format( i.e.
3592-4C E07)
that when the server grabs a scratch tape and starts to write to it that
the tape will be using
the higher data capacity format. During the purchase of our robot, the
scratch cycle
process utilizing a higher data format was confirmed by our vendor's TSM
consultant.

On 2/28/2013 9:43 PM, David Bronder wrote:

I think they are _supposed to_ write at the higher capacity without a
relabel if it's writing from the beginning of the cartridge (after the
label, of course).

When I upgraded my -J1A drives to -E05, I didn't do anything to my -JA
tapes once they were scratch to start getting the higher capacity (and
it seems like I'd have noticed otherwise).  The 3590 drives worked the
same way.  So I'd expect the same for -E05 to -E06 or -E07.  It's also
probably noted in some TS1130 or TS1140 marketing material and/or
techincal manual, as well.

In my case, since all the tapes moving to the new 3584 libraries were
already scratch, it was easy enough to go ahead and relabel them, too.
As a bonus, it satisfied any paranoia about it _not_ working, as well
as a first pass at ensuring the new drives liked the old tapes, at
least at first glance.

The exception was the 8 months of NDMP tapes I had to hang onto, which
included both -JA and -JB tapes, which I just moved.  As they expire,
I'll relabel -- out of paranoia -- the -JB tapes, and when they're all
expired, I'll eject the -JA tapes for disposal.

=Dave


Zoltan Forray wrote:

I think you have to relabel to get the higher density/ capacity. Folks
usually setup their libraries to auto-relabel if there is an error reading
the label.

On Feb 28, 2013 8:35 PM, "Prather, Wanda" <Wanda.Prather AT icfi DOT com> wrote:

Looking at this myself for a customer.
Just to confirm,
when you reclaim a JB cartridge that was written by an E05, let it go
scratch, then write it from the beginning on an E06 drive, you get it
written at higher density but you do NOT have to relabel the cartridge,
correct?

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Hello World.                                David Bronder - Systems Architect
Segmentation Fault                                      ITS-EI, Univ. of Iowa
Core dumped, disk trashed, quota filled, soda warm.   david-bronder AT uiowa 
DOT edu

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University at Buffalo
Enterprise Infrastructure Services
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