VTSS (Virtual Tape Storage Subsystem)a DASD buffer containing virtual tape volumes (VTV) and virtual tape drives (VTD). The VTSS is a StorageTek RAID 6 hardware device. See VTD and VTV.
VTV (Virtual Tape Volume)a DASD buffer that appears to the operating system as a real tape volume. Data can be written to and read from the VTV, and the VTV can be migrated to and…
VulnerabilityWeakness in an information system, system security procedures, internal controls, or implementation that could be exploited or triggered by a threat…
Vulnerability AssessmentFormal description and evaluation of the vulnerabilities in an information system.
VVDS (VSAM Volume Data Set)the part of the ICF catalog that resides on each DASD volume and contains information on the SMS-managed data sets on that volume. See VTOC.
VVIRFVerification and Validation Information Request Form. 319
VW-1Flammability rating established by Underwriters Laboratories for wires and cables that pass a specially designed vertical flame test formerly designated…