IBM E16RMLL-I - Tivoli Storage Manager, Implementation Manual, Page: 287 / 828

Chapter 6. Data storage
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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 Process Description Status
Number
-------- -------------------- --------------------------------------------
38
Migration 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
------------------- ----------------------------------------------------------