Using DFSMSdfp processing to label volumes

For volumes in an automated tape library, you have the option to use DFSMSdfp OPEN processing as an alternative to using EDGINERS to label scratch volumes.

If the automated tape library is fully functional (vision system working) and the VOL1 label for a scratch volume does not match the external label, DFSMSdfp rewrites the VOL1 label with the correct volume serial number.

DFSMSrmm defers the initialization of the volumes to DFSMSdfp if you request the initialization prior to entering a scratch volume into the automated tape library. DFSMSrmm turns off the initialize action.

For example you use the RMM ADDVOLUME subcommand to define scratch volumes to DFSMSrmm as shown in Figure 1. Specify INIT(Y) to request that the volume is initialized prior to first use. If you later enter the volumes into an automated tape library, during entry processing DFSMSrmm turns off the initialize action to defer the labeling to OPEN processing under DFSMSdfp control.

Figure 1. Defining scratch volumes to be initialized

RMM ADDVOLUME A12345 INIT(Y) STATUS(SCRATCH)

If you request that the initialize action is set for a scratch volume that is already resident in the automated tape library, as shown in Figure 2 using the RMM CHANGEVOLUME subcommand, DFSMSrmm does not defer the initialization to DFSMSdfp. You must use EDGINERS to label the tape before it can be used.

Figure 2. Changing the initialization action for a volume

RMM CHANGEVOLUME A12345 INIT(Y)