VERITAS Volume Manager 3.5 Administrator's Guide (September 2002)

Glossary 321
sector
A unit of size, which can vary between systems. Sector size is set per device (hard drive,
CD-ROM, and so on). Although all devices within a system are usually configured to the
same sector sizefor interoperability, thisis notalways the case.A sectoris commonly 1024
bytes.
shared disk group
A disk group in which access to the disks is shared by multiple hosts (also referred to as a
cluster-shareable disk group). Also see private disk group.
shared volume
A volume that belongs to a shared disk group and is open on more than one node of a
cluster at the same time.
shared VM disk
A VM disk that belongs to a shared disk group in a cluster.
slave node
A node that is not designated as the master node of a cluster.
slice
The standard division of a logical disk device. The terms partition and slice are sometimes
used synonymously.
spanning
A layouttechnique that permits a volume(and its file system ordatabase) that is toolarge
to fit on a single disk to be configured across multiple physical disks.
sparse plex
A plex that is not as long as the volume or that has holes (regions of the plex that do not
have a backing subdisk).
Storage Area Network (SAN)
A networking paradigm that provides easily reconfigurable connectivity between any
subset of computers, disk storage and interconnecting hardware such as switches, hubs
and bridges.
stripe
A set of stripe units that occupy the same positions across a series of columns.