I have 12TB of SATA storage in the form of a Virtual Tape Library (VTL) appliance, in my case a SEPATON S2100-ES2. To TSM it's just a tape library on steroids (rapid mounts, dismounts, etc). I have routinely pushed in excess of 80 MB/sec. with no problems. It's scalable to 1PB storage capacity and 4.3TB/hour. Mine is not that large, configured with only 64 virtual tape drives. The drives even do compression just like a real tape drive. I decided not to go with serial file devices because I did wanted to keep the ability to do LAN-free backups, easy scalability and did not want to force the overhead of compression on the TSM clients or server.
Milton Johnson -----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Paul Zarnowski Sent: Wednesday, November 30, 2005 10:10 AM To: ADSM-L@VM.MARIST.EDU Subject: Re: VTS or san disk storage Any success stories out there for using large amounts of serial-access disk with TSM? At 06:19 PM 11/29/2005, you wrote: >Richard, > >I share your pain. > >We have an EMC Clariion CX500 SAN. We have found that AIX in general, >and TSM in particular, can just "hose" the sucker. > > I have about 6TB of san disk space used for nightly backups and the > > management of it is just a pain. > > I am curious what kind of problems you are running into. At the TSM > > Symposium at Oxford this year, IBM indicated that they were going to > > further develop the serial access disk support in TSM. And, TSM 5.3 > > just added the ability for a SAD devclass to span multiple > > filesystems. After hearing this, we have been leaning towards > > investing in inexpensive disk managed by TSM rather than buying a > > VTL appliance. I'm interested in other's comments about where, > > specifically, they are having problems managing SAD directly by TSM. -- Paul Zarnowski Ph: 607-255-4757 Manager, Storage Systems Fx: 607-255-8521 719 Rhodes Hall, Ithaca, NY 14853-3801 Em: [EMAIL PROTECTED]