TeraTeam UK Teradata DBA Definition
term: VDisk (virtual disk)
A vdisk (pronounced, "VEE-disk") is the logical disk space that is managed by an AMP. Depending on the configuration, a vdisk may not be contained on the node; however, it is managed by an AMP, which is always a part of the node.
The vdisk is made up of 1 to 64 pdisks (user slices in UNIX or partitions in Windows NT, whose size and configuration vary based on RAID level). The pdisks logically combine to comprise the AMP's vdisk. Although an AMP can manage up to 64 pdisks, it controls only one vdisk. An AMP manages only its own vdisk, not the vdisk of any other AMP.
