Glossary

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subdisk

In storage media managed by VVM, a set of contiguous disk blocks used for allocating disk space. A VVM disk can be divided into one or more subdisks, each one representing a specific portion of the disk. Each portion is mapped to a specific region of a physical disk.

See also plex volume

Refers to a region of contiguous space on a disk. In Storage Foundation for Windows, subdisks are the basic units in which disk space in a volume is allocated. A disk can be divided into one or more subdisks. Each subdisk represents a specific portion of the volumes on a dynamic disk.

A Storage Foundation for Windows disk may contain multiple subdisks, but subdisks cannot overlap or share the same portions of a disk. Any disk space that is not part of a subdisk is considered to be unallocated space, which can be used to create new volumes.

Subdisks can be moved to improve disk performance.

A consecutive set of contiguous disk blocks that form a logical disk segment. Subdisks can be associated with plexes to form volumes.

A set of contiguous disk blocks that form a logical disk segment. Subdisks are associated with plexes (mirrors) to form volumes.

Refers to a region of contiguous space on a disk. Subdisks are the basic units in which Veritas Storage Foundation for Windows allocates disk space in a volume. A SFW disk can be divided into one or more subdisks. Each subdisk represents a specific portion of the volumes on a dynamic disk.

A SFW disk may contain multiple subdisks, but subdisks cannot overlap or share the same portions of a SFW disk. Any SFW disk space that is not part of a subdisk is considered to be unallocated space, which can be used to create new volumes.

You can move subdisks to improve disk performance.