SVS200 (T1714-96008, June 2006)

LUN Configuration and Security Manager XP user guide for the XP12000/XP10000/SVS200 131

Figure 80 Overview of Make Volume function

Parity group configuration

One parity group consists of a maximum of 16 VDEVs. For RAID-5 (7D + 1P) or RAID-6 (6D + 2P) levels,

a maximum of 512 fixed-size volumes (FVs) and a certain amount of free space are available in one

VDEV. For other RAID levels, a maximum of 256 FVs and a certain amount of space are available in one

VDEV. Each VDEV in a parity group has the same configuration, and is assigned the same FVs of the

same size and RAID level.

CVS functions (Volume to Space, Install CV, Volume Initialize, and Make Volume) are performed on each

VDEV. VDEVs are also separated from each other by the boundary limitation. Therefore, you cannot

define a volume across two or more VDEVs beyond the boundaries.

Figure 81 Parity group configuration