Mike,

Of course you can have a full-functional "virtual tape" solution without the
hardware, its called CA-Vtape ;}

With CA-Vtape, you use your existing DASD as the cache for staging the
virtual volumes but how much cache you have will depend on how quickly you
want to backstore to the physical tape(s). The more cache you have, the less
often you would need to perform the backstore operation. And, it is not
priced on a MIPS basis; but rather on how many virtual-UCB's you need. So,
it is very easy to scale it to your needs. Very similar to TMM (which will
also use your dasd as the staging place); but doesn't require any JCL
changes or even any SMS construct changes.

Russell Witt
CA L2 Support Manager

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]]on
Behalf Of Mike Myers
Sent: Thursday, April 16, 2009 9:58 AM
To: [email protected]
Subject: TMM with CA-1 and STK Silo


I am looking for information on how I can do "virtual tape" using the
capabilities of DFSMS in an environment where we have CA-1 as our tape
management system and are using a StorageTek silo for our automated tape
library. Currently we are using a StorageTek VSM unit, which we would like
to get rid of. Does anyone know if it is possible to create and manage
virtual tape functions using the above without the VSM hardware? If so, can
you provide me some references that would help in the implementation?

Mike Myers
Pitt County Memorial Hospital

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