&SYSHSM

When DFSMShsm (Data Facility Storage Management Subsystem Hierarchical Storage Manager) is active, &SYSHSM indicates its level. When DFSMShsm is not active, &SYSHSM contains a null string.

&SYSHSM contains a character string of four two-digit decimal numbers separated by periods. The value returned is in the format cc.vv.rr.mm, where cc is a product name code, vv the version, rr the release number, and mm the modification level. All values are two-digit decimal numbers.

For each level of the operating system, only one value for &SYSHSM is possible.

These are the values for the cc code that have been used in earlier operating systems:

02: DFSMShsm in OS/390® Version 2 Release 10, or in z/OS® Version 1 Release 1 or Release 2. All three releases returned "02.02.10.00".
03: DFSMShsm in z/OS Version 1 Release 3 or later.

For example, a value of 02.02.10.00 represents DFSMShsm for OS/390 V2R10. A value of 03.01.10.00 represents z/OS Version 1 Release 10 Modification Level 0.

Before OS/390 V2R10, &SYSHSM contained a character string of four decimal digits. The first digit represented the version. The second and third digits represented the release number of DFSMShsm. The fourth digit represented the modification level. For example, 1050 represented DFSMShsm 1.5.0.