Used for years - and using it to rebuild my tsm server at a DR site - never had any problem
-----Original Message----- From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On Behalf Of Wanda Prather Sent: Wednesday, July 09, 2008 7:51 PM To: ADSM-L@VM.MARIST.EDU Subject: Re: TSM DB backup to FILE vols - safely Been there. Done that. Works peachy. On Wed, Jul 9, 2008 at 1:19 PM, Roger Deschner <[EMAIL PROTECTED]> wrote: > As part of a major upgrade, I am considering moving some TSM DB backups > to FILE volumes. LTO4 tapes hold a terrabyte, and the incrementals, in > particular, are wasting a LOT of tape. I'm thinking of doing full DB > backups to tape, and incrementals to disk FILE volumes. > > The manual says you can back up the TSM Database to either TAPE, or to > Virtual Volumes on another TSM server. It doesn't mention FILE volumes. > I seem to remember somebody long ago saying you should not consider > that. OK, so what's wrong with backing up the TSM Database to FILE > volumes? > > This would be what I suppose might be safe: > > Do not use a local filesystem. The FILE volumes used for DB backup > should reside on an NFS-mounted filesystem, which can also be mounted by > some other system. A separate physical location would be nice. This > should be on the same NFS server which you also use to back up the > Volume History and Device Config files. On all systems that can mount > this NFS filesystem, it should be mounted at the same mount point as on > the TSM server system. That is so the DB Backup volume names in the > Volume History File are still valid. > > Are there any other pitfalls I am not forseeing here? > > Having said that, though, I have not noticed any performance difference > between Virtual Volumes on another server, and a mounted NFS filesystem. > The network is the speed limitation. It's just that Virtual Volumes are > more complicated, and thereby more problem prone when a junior staff > member is the one called in a disaster to do a TSM DB restore, while I'm > camping in the mountains. > > Roger Deschner University of Illinois at Chicago [EMAIL PROTECTED] > Academic Computing & Communications Center > ======I have not lost my mind -- it is backed up on tape somewhere.===== >
