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2 Chapter 1 Overview of Hitachi Copy Solutions
1.2 Overview of Hitachi Data Replication Functions
The Hitachi data replication features controlled by CCI include:
TrueCopy (section 1.2.1)
ShadowImage (section 1.2.2)
Universal Replicator (section 1.2.3)
Copy-on-Write Snapshot (section 1.2.4)
1.2.1 Hitachi TrueCopy
The Hitachi TrueCopy feature enables you to create and maintain remote copies of the data
stored on the RAID storage systems for data backup and disaster recovery purposes.
TrueCopy operations can be performed across distances of up to 43 km (26.7 miles) using
standard ESCON
®
support, and up to 30 km (18.6 miles) using fibre-channel (FC) interface.
Long-distance TrueCopy solutions are provided, based on user requirements and workload
characteristics, using approved channel extenders and communication lines.
Hitachi TrueCopy operations can be performed using the Command Control Interface (CCI)
software on the UNIX/PC server host, or the TrueCopy software on Storage Navigator. The
CCI software on the UNIX/PC server displays Hitachi TrueCopy information and allows you to
perform TrueCopy operations from the UNIX command line or via a script file. The CCI
software interfaces with the RAID storage systems through a dedicated LU called a command
device. The Hitachi TrueCopy software also displays TrueCopy information and allows you to
perform TrueCopy operations via a Windows-based GUI.
Hitachi TrueCopy can be used in conjunction with ShadowImage to maintain multiple copies
of critical data at your primary and/or secondary (remote) sites. This capability provides
maximum flexibility in data backup and duplication activities.
For details on TrueCopy operations, please refer to the TrueCopy User’s Guide for the
storage system (e.g., Hitachi TagmaStore
®
USP/NSC TrueCopy User’s Guide).
Note: The 7700E remote copy feature/software is called Hitachi Open Remote Copy (HORC).