IBM E16RMLL-I Implementation Guide - Page 287
Migration
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ANR8331I LTO volume 022AKK is mounted R/W in drive DR01 (/dev/rmt1), status: DISMOUNTING. ANR8334I 2 matches found. 6.5.8 Migration Migration is the process of moving data from one primary storage pool to the next storage pool specified by the NEXTstgpool attribute. Migration is performed with the migrate stgpool command. Specify a temporary low-migration threshold (LOwmig) and a duration (DUration) in minutes for which you want the migration process to run. The low-migration threshold, specified as a percentage value, indicates that the migration process will stop when the storage pool utilization reaches or is below this number. If you specify a duration, however, then the process will stop after this time period, regardless of whether the low threshold is reached. If you want the process to always continue until the threshold is reached, do not specify this parameter. During the period that the migrate stgpool command is active, the high migration threshold is ignored. Example 6-34 shows the migration of the DISKDATA pool to TAPEDATA and the messages you will see in the activity log. In this case, we set the migration threshold to 0, which means that migration continues until the storage pool utilization is 0% (that is, until the storage pool is empty). Example 6-34 Manual migration of a storage pool tsm: ATLANTIC>migrate stgpool diskdata low=0 dur=30 ANR2110I MIGRATE STGPOOL started as process 38. ANR1000I Migration process 38 started for storage pool DISKDATA manually, highMig=80, lowMig=0, duration=30. ANS8003I Process number 38 started. tsm: ATLANTIC>q pr Process Number -------38 Process Description Migration Status Disk Storage Pool DISKDATA, Moved Files: 0, Moved Bytes: 0, Unreadable Files: 0, Unreadable Bytes: 0. Current Physical File (bytes): 4,096 Waiting for mount of scratch volume (10 seconds). tsm: ATLANTIC>q act Date/Time Message Chapter 6. Data storage 257
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