Adding volumes for a new removable media library

If you have a new removable media library or system with all scratch tapes, define all volume information to DFSMSrmm at once.

Use the RMM ADDVOLUME subcommand or the DFSMSrmm ISPF dialog to define volume information to DFSMSrmm. Figure 1 shows the minimum information you must add for each volume: volume serial number and volume status.
Figure 1. Defining minimum volume information
```
RMM ADDVOLUME volser STATUS(SCRATCH)
```
To add volumes that are in a system-managed library, use the command as shown in Figure 2. You specify the STATUS(VOLCAT) to obtain volume information from the TCDB.
Figure 2. Defining volumes in a system-managed library
```
RMM ADDVOLUME volser STATUS(VOLCAT)
```
To add volumes that are in a manual tape library, use the command as shown in Figure 3. You must specify the MEDIATYPE operand and the RECORDINGFORMAT operand.
Figure 3. Defining volumes in a manual tape library
```
RMM ADDVOLUME volser LOCATION(mtlname) MEDIATYPE(HPCT)-
        RECORDINGFORMAT(128TRACK) STATUS(SCRATCH)
```
When you are adding a volume to DFSMSrmm, you can specify whether the volume is a logical volume, a physical volume, or a stacked volume. The default volume type is physical volume. If a volume resides in a virtual tape server (VTS), the default is either a logical volume or a stacked volume. If you want DFSMSrmm to automatically manage the movement of stacked volumes, you must enable stacked volume support as described in Setting up DFSMSrmm stacked volume support.

If you do not specify the RETENTIONMETHOD operand on ADDVOLUME, then DFSMSrmm uses the parmlib RETENTIONMETHOD default.

When you are adding a volume that is managed by the EXPDT retention method and you do not specify the RETAINBY operand, then DFSMSrmm uses the parmlib default for the EXPDT retention method RETAINBY value.

You can issue the subcommands in batch.
Set the DFSMSrmm running mode in the parmlib member EDGRMMxx to record only mode, warning mode, or protect mode. DFSMSrmm records information about the volumes as they are used. When DFSMSrmm is running in warning mode, DFSMSrmm validates magnetic tapes volumes as you use them. If DFSMSrmm discovers errors, it issues error messages instead of rejecting tapes. When DFSMSrmm is running in protect mode, DFSMSrmm validates magnetic tapes volumes as you use them and rejects magnetic tape volume mounts when errors are encountered. Protect mode is the only mode that provides full verification and validation of volumes.