Onotsky, Steve x55328 wrote at 14:23 -0400 on May 14, 2009: > I agree, but the caveat is that the planner will do its darndest to > make full use of the extended capacity of the LTO4 cartridge. > > In my case, our backups went from between 5 and 8 hours with LTO2 > tapes to well over 24 hours in some cases with the LOT4s - same > DLEs. It took some fancy footwork to get it to a reasonable window > (about the same length of time as with the 2s but some of the > larger DLEs are forced to incremental on weekdays). This is so we > can get the cartridges ready for pickup by our offsite storage > provider.
You can lie about your "tape" size in the tapetype, of course. You can even have different lies for different configurations. I've always wanted a knob to tell the scheduler to "shoot" for a smaller percentage of the total tape size, but to go ahead and use more if needed. Kind of an average target total size for the dumps. Maybe there is such a knob these days. I hope someone will say if there is. Lying about the tape size usually works fine. And it will go over that declared size if needed - if, for instance, some unexpected increase in size to a DLE happens after the estimate completes (or for whatever reason, the estimate is too low).