Oh, my head hurts. Haven't seen this before. TSM server AIX 5.5.2 with no disk pool. Clients back up to a VTL (which is an EMC CDL) The VTL migrates to an LTO tape pool.
So the data flow is clients => CDLPOOL => TAPEPOOL CDLPOOL has MIGPROCESS=4 MIGRATE STGPOOL CDLPOOL kicks of 4 migration processes, as one would expect. Except 3 of the processes choose a CDLPOOL volume as the input volume, and an LTO2 TAPEPOOL volume as the output volume. The 4th process chooses a CDLPOOL volume as the input volume, AND chooses a CDLPOOL volume as the OUTPUT volume. WHAT circumstance causes migration to choose an output volume in the SAME POOL as the input volume? . W
