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Veritas: Terminology & Definitions

 

 
 
Term Definition
Disk group: Collection of data, volumes, and associated parts (subdisks, plexes, and vmdisks).
Volume: Virtual partition on which filesystems are created or databases operate.
Data plex: 1 copy of the data.
Log plex: Logging information for volumes (RAID 5 or DRL). Displayed with a double border.
Subdisks: Contiguous regions on a disk. 4096 is the limit on the number of subdisks per physical volume. Don't do that.
VM Disks: Public region of a physical disk.