When is
started, it gets environmental and function information from the parameter
library (PARMLIB). The SETSYS, DEFINE, and ADDVOL commands that define
the way in which manages
your data are in the PARMLIB member. (See Starter set example in the starter set for an example
of the PARMLIB member ARCCMD00.)
In the following text, how to define the CDS and journal backup
environment is discussed in a step-by-step fashion. The SETSYS CDSVERSIONBACKUP
command determines how backs
up your control data sets. Subparameters of the CDSVERSIONBACKUP command
allow you to specify:
- The data mover that backs up the control data sets (DFSMSdss is
recommended)
- The number of backup versions to keep for the control data sets
- The device type on which to store the backup versions of the control
data sets
- The names of the backup version data sets
SMS storage groups and management classes allow
you to control other functions:
- Prevent backup (outside of CDSVERSIONBACKUP) of the control data
sets and the journal
- Prevent migration of the control data sets and the journal
- Specify that concurrent copy be used to backup the control data
sets, assuming that the control data sets are on volumes connected
to a controller that provides concurrent copy