> 2 x system space would be enough for a full dump plus plenty of > increments, I'd say. No? Is there a rule of thumb? 3x? 4x? That depends how much your file system change. If every ficle change befor the incremental run, dump 1 will be equal to dump 2, and 2x will be enough for just dump0 and dump 1. There is no rule. Olivier