Setup Procedures; Setting Up Dmlus - Hitachi AMS 2000 User Manual

Setup procedures

The following sections provide instructions for setting up the DMLU, data
pools, CHAP secret (iSCSI only), and remote path.

Setting up DMLUs

The DMLU (differential management-logical unit) must be set up prior to
using TCE. The DMLU is used by the system for storing TCE status
information when the array is powered down.
Prerequisites
• The logical unit used for the DMLU must be set up and formatted.
• The logical unit used for the DMLU must be at least 10 GB
(recommended size).
• DMLUs must be set up on both the local and remote arrays.
• One DMLU is required on each array; two are recommended, the
second used as backup. However, no more than two DMLUs can be
installed per array.
• When setting up more than one DMLU, assign them to different RAID
groups to provide a backup in the event of a drive failure.
• Specifications for DMLUs should also be reviewed. See
specifications on page
To define the DMLU
1. In the Navigator 2 GUI, select the array where you want to set up the
DMLU.
1. In the navigation tree, click Settings, then click DMLU. The DMLU
screen displays.
2. Click Add DMLU. The Add DMLU screen displays.
•
Hitachi AMS 2000 Family TrueCopy Extended Distance User Guide
5-3.
Installation and setup
TCE system
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