More than usual - nearly all SAN TSM installations use tape libraries.
SAN connection of any IBM Ultrium library is a very good option. In fact
for large continuous data streams LTO drives are better than many disks.
And if your source server (TSM MgSysSAN client) and its disk subsystem are
fast enough you can exploit several backup sessions to several drives in
parallel. Will this be 3 nodes to one drive or single node to 3 drives in
parallel - the result is the same, you are getting the performance
tripled.

Zlatko Krastev
IT Consultant






Kurt Beyers <kurt.beyers AT PANDORA DOT BE>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
09.10.2002 22:26
Please respond to "ADSM: Dist Stor Manager"


        To:     ADSM-L AT VM.MARIST DOT EDU
        cc:
        Subject:        Re: Backup to SAN-shared disk storage (was Re: TSM 5.1 
EMC Timefinder
SAN)


Zlatko,

Thanks for your excellent answer, it is a great tutorial.

The library currently used is a IBM LTO with 4 LTO drives. So it would be
a
better idea to connect the library to the SAN as well (this is currently
not
the case, as was asked by Glen) and take the backup of the clients via the
SAN directly to the LTO storage pool instead of using a file device pool
on
the SAN as the first destination pool and migrate it later to the LTO
pool.
Is this the usual setup of TSM in a SAN: backup directly to the
fibre-attached library pool?

Thanks,
Kurt