Virtual Software Systems, Inc.

Effective immediately, VSSI will only be providing product CKD support for 3390 disks. The affected disk configurations include: . TPF and z/Linux BASE devices intercepted by the VPARS, ShadowDisk/Z, and VTAPE products . VPARS and VTAPE databases used as backing storage 3390 will be the only supported CKD device type going forward; older device types […]

Please be advised the support for “VPSET PTV ON” command has changed. For more than the past decade, attempted use of the VPSET PTV ON command has issued the following message: Because IBM has withdrawn PTV mode from z/TPF, VSSI plans to remove PTV support from VPARS. If you still have a use for VPARS […]