Configuration Workflow; Setting Up The Data Pool - Hitachi AMS2100 User Manual

Configuration workflow

Setting up the data pool

5-2
Hitachi AMS 2000 Family Copy-on-Write SnapShot User Guide
Setup for SnapShot consists of assigning logical units for the
following:
• Data pools
• V-VOL(s)
• DM-LUs
• Command device (if using CCI)
The P-VOL should be set up in the array prior to SnapShot
configuration.
Refer to the following for requirements and recommendations:
• Requirements and recommendations for SnapShot Logical Units
on page 2-10
• Operating system considerations on page 2-13
• Chapter 3, System requirements
• Appendix A, Specifications
The data pool holds data from the P-VOL that is being replaced. You
must set up the data pools before using SnapShot. The data pool stores
differential data after the snapshot is created. For more information
on the data pool see
Prerequisites
• LUs for a data pool must be on the same controller as the P-VOL
LUs.
• Up to 64 LUs can be assigned to a data pool.
• Hitachi recommends a minimum of 20 GB for data pool size.
• To review the data pool sizing procedure, see
pool size on page
• When Cache Partition Manager is used with SnapShot, the
segment size of the LU belonging to a data pool must be the
default size (16 kB) or less. See Hitachi Storage Navigator Modular 2
Storage Features Reference Guide for more information.
• An LU with SAS drives, an LU with SAS7.2K drives, an LU with
SSD drives, an LU with SATA drives, and an LU with SAS (SED)
drives cannot coexist in a data pool.
To set up the data pool
(For instructions using CLI, see
1. In Navigator 2 GUI, select the desired array, then click the Show
& Configure Array button.
Configuring SnapShot
Data pools on page 1-4.
2-5.
Setting the POOL on page
Establishing data
B-11.)