LTO3 can read, but not write, LTO1 cartridges.
So that config's a no-brainer; pop in your LTO3 drives, mark all you LTO1
carts as READONLY.  You can create a new stgpool for LTO3 (or it's easier
to rename the old pools to poolname-OLD, use the original poolname for
LTO3, then you don't have to redirect any mgmt classes).  Then all your
new data is written with LTO3; you can start a MIGRATE command to move all
the data from the LTO1 cart pool to the new pool.

LTO4 is harder, since it cannot read or write LTO1.
In that case I would create a new partition/logical library for the LTO3
drives; it's so easy to do with a 3584. Then proceed as above.  Rename the
old stgpool, create a new stgpool in the new library that is LTO3, issue
MIGRATE command to move data from LTO1 to LTO3..

Wanda

> Hi All,
>
> Thanks for your help!!
>
> We have a TSM 5.3.2 instance running on an LPAR on a p550 and are using
> a IBM 3584 Library with 1 expansion cabinet(590 volumes). We currently
> have 8- LTO1 and 8- LTO2 drives in the library with all LTO1 tapes. We
> are going to be upgrading to all LTO3 drives and tapes(I am pitching
> LTO4 now). I am looking for any information I can find on the best way
> to accomplaish this upgrade.
>
> Nicholas Rodolfich
> TSM/AIX Administrator
> East Jefferson General Hospital
> Fidelity Information Systems
> 504-883-6955 (office)
> 228-223-6777 (mobile)
> nrodolfich AT ejgh DOT org
>
>
>
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