VERITAS Volume Manager 3.5 User's Guide - VERITAS Enterprise Administrator (June 2002)

VxVM Volumes
82 VERITAS Volume Manager User’s Guide - VEA
Note The total volume size you indicate for the volume in the Create Volume Wizard is
the usable size for storing the data. Depending on the layout type, the volume can
take more space on the disk. The size shown in the Wizard for simple, striped, and
spanned volumes is the actual volume size on the disk. A RAID-5 volume requires
additional space for parity information, and a mirrored volume is a multiple of the
space taken by the original plex of the volume. The Wizard provides a Query Max
Size button to determine the size of the volume. Again, this is the usable size of the
volume rather than the actual size taken by the volume on the disk.