There are no new or changed SMS Constructs for DFSMSdfp.
Table 1 identifies changes to the SMS constructs, such as data class, management class, storage class, and storage group. See z/OS DFSMSdfp Storage Administration for more information about SMS constructs.
| Construct | Release | Description | Reason for change |
|---|---|---|---|
| Reserve storage pool | z/OS® V1R13 | New: A reserve storage pool is a group of volumes that have been defined for future use. z/OSMF uses reserve storage pools to simplify adding storage to a pool storage group. In addition, reserve storage pools can make it easier to manage volumes that are defined but unused. | Support for z/OSMF. |
| Pool Storage Group | z/OS V1R13 | New fields: Several new fields related to adding storage to a pool storage group through z/OSMF. | Support for z/OSMF. |
| Storage class | z/OS V1R13 | New field: Disconnect Sphere at CLOSE, which controls how the record level sharing (RLS) sphere is disconnected after the data set last closed. | VSAM RLS buffer management facility enhancement. |
| Data Class | z/OS V1R13 | Changed field: The maximum data set retention period is now 93000 days rather than 9999 days. | Release support. |
| Management Class | z/OS V1R13 | Changed field: The maximum data set retention period is now 93000 days rather than 9999 days. | Release support. |
| Data class | z/OS V1R12 | New field: CA Reclaim, to enable or disable CA reclaim for the data class. | CA reclaim support. |
| Pool Storage Group | z/OS V1R12 | Changed field: Allocation/migration Threshold is expanded to allow a high threshold value of 100%. | Release update. |