ADSM-L

TSM on z/OS - Virtual Tape

2005-08-29 16:59:11
Subject: TSM on z/OS - Virtual Tape
From: Mark Wheeler <mlwheeler AT MMM DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Mon, 29 Aug 2005 15:58:53 -0500
After 13 years, we're looking to replace our TSM/VM servers (not by choice,
but we've fought that battle with Tivoli and are finally conceding defeat).
TSM on z/OS is one possible alternative, but we only have access to virtual
tape (STK's flavor) on that platform.

TSM on VM currently runs with STK 9840s emulating IBM 3590s. Total tape
storage is approx 14 TB. We back up about 25 GB of data per night, with
occasional peaks of >100 GB. Our largest clients are Unix System Services
and a couple Windows boxes (all >1 TB each). Also 100 or so Linux/390
systems and assorted small  Unix, Windows, Lintel clients.

I can see any number of potential pitfalls running TSM in a virtual tape
environment unless things are configured just so (and maybe even if they
are).
1) Is anyone running TSM on z/OS with virtual tape?
2) Has anyone tried it and failed?

Best regards,
      Mark Wheeler
      3M Company

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