The latest VTS from IBM does not run TSM under the covers.  I'm not sure if you 
are thinking about VTS (Virtual Tape System) or something else like a Document 
Management system.
   
  

"Gee, Norman" <Norman.Gee AT LC.CA DOT GOV> wrote:
  I would not consider using IBM VTS as a possible solution. The VTS
internally also runs ADSM. If the tape volumes you want is not on
cache, the VTS has to retrieve it from tape, place it on disk cache
prior to sending it to the servers. This takes time. My VTS emulates
IBM 3490E cartridge tapes. These tapes has a native capacity of 800MB or
2.4GB compress. This is not a lot of data these days.


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Dearman, Richard
Sent: Wednesday, November 23, 2005 8:34 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: VTS or san disk storage

We currently use several TB of san based disk storage for our daily
backups which gets migrated during the day to multiple tape libraries.
The san disk administration has become a nightmare and I was thinking of
replacing it with a VTS from IBM or other disk library such as one from
EMC. Do you guys have experiences with disk library based systems and
have any pro or con comments on them and whether or not you have had
good or bad experiences with them.



thanks


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