All library-resident tape volumes used by an SMSplex must be defined
in the tape configuration database. This means that cartridge entry
must occur on an SMS system. Therefore, all volumes to be used exclusively
by SMS, and all volumes to be shared by SMS and a non-MVS platform
must be entered on an SMS system. Either the Cartridge Entry Installation
Exit or DFSMSrmm may be used to control which cartridges are accepted.
Other considerations include:
- If the volumes already contain useful data, they should be assigned
the private volume use attribute.
- If the volumes do not contain useful data and they are to be written
on the non-MVS platform, they should be assigned the private volume
use attribute to prevent their use as scratch volumes by SMS.
- If the volumes do not contain useful data and they are to be written
on the SMS system, they may be assigned the scratch volume use attribute.
- All references to the volumes from a non-MVS platform should be
specific volume serial number references.
- Private volumes should be returned to scratch only on an SMS system.
- An attempt to mount a volume on one platform will fail if the
volume is already in use on another platform.
- Cartridges should be ejected only from an SMS system.