Resolving recording technology conflicts for TS1120

3592 Model J1A devices, 3592 Model E05 devices that are not encryption-capable, and encryption-capable TS1120 tape drives can all write to MEDIA5-MEDIA8 media types. However, conflicts occur when an EEFMT2 formatted cartridge is mounted on a 3592 tape drive that is not encryption-capable and is being relabelled/reused.

The OPEN and EOV routines can resolve these recording technology conflicts if you meet these conditions:

Set OPEN for output to the first file
Specify VOLNSNS=YES in the DEVSUPxx member of PARMLIB
Position the tape cartridge at the load point.

If these conditions are met and if the cartridge has an internal volser recorded in its volume control region, OPEN and EOV routines rewrite the VOL1 label with the volume identifier in the sense data.

Note: To enable this support, make sure that the 3592 Model J1A devices and any 3592 Model E05 devices that are not encryption-capable are at the appropriate microcode level, so that an up-level volume can have its volume identifier returned in the sense data.

For additional information about resolving recording technology conflicts, see z/OS DFSMS Using Magnetic Tapes and z/OS DFSMS Installation Exits.