
Chapter 1. Introduction 31
If you add a new volume with a volume serial number of a volume previously
defined in the CDS, DFSMSrmm will display a new panel as shown in
Figure 1-23.
Figure 1-23 Add duplicate volume
1.1.7 Policies for retention and movement
DFSMSrmm provides policy management for movement and retention at the
data set, volume, or volume set level. Every tape data set can have a policy, and
each policy can specify movement as well as retention. The retention and
movement policies you define to DFSMSrmm are known as vital record
specifications (VRSs). You use them to indicate how long and where you want to
keep data sets or volumes. ...