Making migration level 2 key range volumes available

When the ML2 volume for a specific key range becomes full during migration, DFSMShsm tries to assign a new volume to the key range. If no ML2 volumes are available, you can do one of the following to make volumes available:

• Use the ADDVOL command to add more ML2 volumes to DFSMShsm.
• Use the UNASSIGN parameter of the DELVOL command for each ML2 volume you want to be made available for reuse. When you use this parameter, specify DASD ML2 volumes that have been used before and that you want to reuse now. Ensure that space is available on these volumes because of subsequent recalls and deletions.
• Use a DEFINE command to assign a volume to a key range. To associate a specific volume with a key range, use the DEFINE command. Issue a QUERY ML2 command to determine the current association of volumes to key ranges. Then enter a DEFINE command specifying the same set of volumes but with the new volume replacing the old volume associated with the key range.