Hitachi VSP G400 User Guide

You can add up to 1,024 pool-VOLs (including volumes already in a pool) to a
pool.
Adding pool-VOLs to pools to expand pool capacity moves data to the added
space on a per-page basis, which rebalances the usage rate among parity
groups of the pool-VOLs.
Caution: Moving existing data to the added space on a per-page basis can
decrease host I/O performance.
Note: You can only increase the capacity for one pool at a time.
Before you begin
You must not be currently decreasing the pool capacity.
Procedure
1. In the Explorer pane, click Storage Systems, expand the storage
system tree, and then click Pools.
2. In the Pools tab, select the check box for the pool to which you want to
add a pool-VOL from the list, and then click Expand Pool.
3. In the Expand Pool window of the Expand Pool wizard, click Select
Pool VOLs.
174 Monitoring and maintaining Thin Image
Hitachi Thin Image User Guide for Hitachi Virtual Storage Platform G Series and F Series

Hitachi VSP G400 Specifications

General

Brand	Hitachi
Model	VSP G400
Category	Storage
Language	English