Hardware requirements

You can use DFSMSdss with all IBM® DASD, magnetic tape devices, system consoles, printers, and card readers that are supported by DFSMS.

Note:

VSAM-extended addressability requires a cached storage subsystem that has concurrent copy-capable licensed internal code.
DFSMSdss does not support virtual input/output (VIO) devices.
When running DFSMSdss operations against storage devices that do not support 64-bit real addressing, you must tell DFSMSdss not to use the I/O buffers that can be backed above the 2–gigabyte bar. This can be done by either specifying ZBUFF64R=OFF on the EXEC statement in your JCL or by turning off the UFPZB64R bit in ADRUFO block with the Options Installation Exit Routine, ADRUIXT.