I thought I would wrap up my thoughts on TSM, for now, by talking briefly about two things TSM users are typically concerned about: migrating TSM clients and getting off TSM.
The first one of these is something we talked about just recently. And I think I covered off the easiest way to move to a Data Domain target with TSM from a tape or virtual tape target. But one of the things I frequently get asked about is: what about clients backing up using client side compression?
This practice seems to be relatively common amongst TSM users—I could speculate why, but I won't. Suffice it to say that it is far more common in TSM environments than it is for users of other backup applications. And it is a pernicious practice that is just not good. In any way. Sure it saves bandwidth. Sort of. But bandwidth is free, more or less. And it isn't a big enough deal to enable remote backup, so really it just saves local bandwidth. Which is even closer to free.