Steve, Works fine as long as you're at least MP4. Prior to that DSSUs would stage the files in the filesystem sequentially regardless of retention levels. Thus if you're not mixing retention on a tape (but are on the filesystem) you could have the situation where tapes are constantly being mounted and unmounted, killing the advantages of the batch nature of DSSU.
With 5.1 MP4 this has been fixed by separating the staging jobs by retention level though you'll want to take note of MAX_STAGING_JOBS and STAGING_JOB_KB_LIMIT parameters. Other note is not to get too cheap of disk for this work, and make sure there's enough of it. One day's worth of problems can back you up trying to stage to tape for several days afterwards. G. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Steven L. Sesar Sent: Thursday, April 27, 2006 10:09 AM To: NetBackup Veritas Subject: [Veritas-bu] DSSU/DSU experience We're in the process of rearchitecting our BUR infrastructure. The most profound change will be the addition of disk storage, as we are 100% tape, right now. We're considering a few different disk technologies, such as VTL, DataDomain NAS heads, as well as traditional DSU/DSSUs. I've heard anecdotal evidence that DSU/DSSU functionality in NBU 5.1 is less-than-stellar. Would anyone care to share their overall experience with disk storage? Thanks, Steve _______________________________________________ Veritas-bu maillist - [email protected] http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu _______________________________________________ Veritas-bu maillist - [email protected] http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
