The following list describes the fields that are specified on the Management Class Alter panel:

# Versions

Specifies the number of versions of data sets that are assigned this management class, that are to be maintained.

Retain Only/Extra Version(s)

Specify the time period for which the copy is to be retained. The unit of measure for the time period is specified in the accompanying Unit field.

Restriction: This field cannot be left blank if the Unit field is specified.

Copy Serialization

Specifies whether aggregate backup should continue even if the data set is allocated to a job.

Abackup Copy Technique

Specifies whether concurrent copy should be used during aggregate backup processing. Valid values are:

P

indicates that concurrent copy is preferred and should be used for backup. A data set is backed up on a nonconcurrent copy volume if it does not reside on a volume supported by concurrent copy, or if the volume on which it resides is unavailable for concurrent copy.

R

indicates that concurrent copy must be used for backup. Backup fails for data sets that don't reside on volumes that are supported by concurrent copy, or that are unavailable for concurrent copy.

S

indicates standard allocation, in which data sets are backed up without using concurrent copy.