Re: [Veritas-bu] DSSU/DSU experience

[Matthew Stier]

Ed is correct.  Multiple Policies can be written to the same DSSU, however, the contents of a DSSU can only be copied to a single "Volume Pool".  So you going to need at least a unique DSSU for each Volume Pool you want staged. In my environment, I have 5 Volume Pools.  The first is a NAS, and can feed the LTO3 drives a full speed. (So it didn't make sense to stage them) The 2nd, 3rd, and 4th, are databases held on three different servers, and are backed up across a gigabit backbone.  Each of these have their own DSSU on the media server. Which is then copied it's own Volume Pool in the PTL. The 5th covers everything else. Nearly a dozen policies that backed up to two DSSU's, which feed a single Volume Pool. Ed Wilts wrote: On Thu, Apr 27, 2006 at 05:17:41PM -0400, Matthew Stier wrote: DSSU's do have their weaknesses. You are typically stuck with one-to-one ration between DSSU's and policies. This fit my needs, but for those with a multitude of policies to manage, I can see them having problems. We have a lot of policies using the same DSSUs and have not run into any issues with doing this. The only time we have dedicated DSSUs is for databases and that's to guarantee that their last backup is on DSSU for a restore. .../Ed

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