Hitachi VSP G400 User Guide

Item Requirement
Path definition Define only needed paths to a volume so that you can specify the
volume as a pool-VOL.
*SSD contains SSD (SLC, MLC) and FMD.
Thin Image data pool requirements
The following table lists the requirements for Thin Image data pools.
For information about DP pools, see the Provisioning Guide for your storage
system.
Item
Requirement
Pool capacity Calculate the pool capacity (see Calculating and assigning pool
capacity on page 80).
The following are the maximum total capacity of pools in a
storage system:
• VSP G200: 3.5 PB (if Extension1 or Extension2 is added in
the shared memory capacity).
• VSP G400, G600, G800 and VSP F400, F600, F800: 6.5 PB
(if Extension1, Extension2, Extension3, or Extension4 is
added in the shared memory capacity).
• Hitachi Virtual Storage Platform G1000 and G1500, and
Virtual Storage Platform F1500: 12.3 PB (if DP/HDT/Active
Flash/TI Extension1, DP/HDT/Active Flash/TI Extension2, or
DP/HDT/Active Flash/TI Extension3 is added in the shared
memory capacity).
The maximum pool capacity that can be used for each primary
volume is 768 TB.
Pool-VOL limit per pool 1,024
Note: You cannot assign a volume that is already assigned to a
pool as a pool-VOL to another pool.
Pool limit per storage system
• VSP G200, VSP G400, G600: 64
Pool IDs are assigned from 0 to 63.
• VSP G800, VSP G1000, G1500, and VSP F1500: 128
Pool IDs are assigned from 0 to 127.
This can include HDP (including HDT and active flash), HDPz
(including HDTz and active flash for mainframe), and HTI pool
types.
Increasing capacity Dynamically increase the pool-VOL capacity. To do this, increase
the capacity for at least one parity group.
Decreasing pool capacity Use the following workflow to decrease pool capacity:
1. Delete the pool-VOLs (see Decreasing pool capacity on
page 177).
2. Reconfigure the pool (see Creating Thin Image data pools
on page 101).
Deleting pools The pool is not used by an HTI pair.
Thin Image system and planning requirements 73
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