Local Replication; Remote Replication - Hitachi AMS 2100 Hardware Manual

In particular, see the Hitachi Navigator Modular 2 (SNM2) Storage Features
Consolidated User's Guide that is included on the documentation CD that is
shipped with the array. It explains the following storage features:
• Audit Logging
• Account Authentication
• Cache Partition Manager
• Cache Residency Manager
• Data Retention
• LUN Manager
• Performance Monitor
• SNMP Agent Support
• Volume Migration

Local replication

Local replication includes two methods of backing up information:
ShadowImage and SnapShot. These methods create a copy of a volume
(logical unit) in an array to another volume in the same array. You can
create an actual copy of a volume by using ShadowImage and can create a
virtual point-in-time copy of a volume by using SnapShot. ShadowImage
and SnapShot treat the source volume, also called Primary Volume, and its
copy, which is called the Secondary Volume, as a volume pair. For example,
you can a copy by creating a pair. For detailed information and instructions,
see the help page Local Replication.
ShadowImage and SnapShot are optional storage features and require
licenses to be installed and/or enabled before they can be used. See the
introduction help page and the licenses help page for more information
about setting up optional storage features.

Remote replication

Remote replication includes two methods of backing up information:
TrueCopy Remote Replication and TrueCopy Extended Distance. These
methods allow you to create a copy of a volume (logical unit) in the array.
TrueCopy remote replication allows the volumes to be synchronous at all
times, while TrueCopy Extended Distance allows the volumes to be
asynchronous. Both methods treat the source volume, also called Primary
Volume, and its copy, which is called the Secondary Volume, as a volume
pair. For example, you can a copy by creating a pair. For detailed information
and instructions, see the Remote Replication help page in Navigator 2.
TrueCopy remote replication and TrueCopy Extended Distance are optional
storage features. See the Navigator 2 online help and the manuals listed in
the Accessing product documentation
about setting up these optional storage features.
Configuration
Hitachi AMS 2100/2300 Storage System Hardware Guide
in the Preface for more information
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