Hitachi TrueCopy for IBM z/OS User and Reference Guide (T5211-96001, June 2007)

2-2 About TrueCopy for z/OS Operations
Hitachi Universal Storage Platform V TrueCopy for IBM z/OS User’s Guide
TrueCopy for z/OS Components
TrueCopy for z/OS operations involve the USP V at the main and remote sites,
the physical communications paths between the main and remote storage
systems, and the USP V TrueCopy software. TCz copies the original online data
at the main site to the offline backup volumes at the remote site via the
dedicated fibre-channel remote copy connections. The TrueCopy for z/OS
software is included in the Storage Navigator Java™ application, and all
TrueCopy for z/OS functions and operations can be performed from within a
web browser. The I/O time-stamping host software function (provided by MVS
DFSMSdfp) is required for TCzA consistency groups which span multiple
storage systems. Error reporting communications (ERC) is required for
effective disaster recovery with TCz.
Figure 2-1 shows the TrueCopy for z/OS components and their functions.
 USP V
Note: The additional Shared Memory option is required for TrueCopy
operations.
 Main and remote control units (MCUs and RCUs)
TagmaStore USP/NSC and Lightning 9900V can also be used as RCUs with
some restriction.
 Pairs (local M-VOLs and remote R-VOLs)
 TrueCopy for z/OS Async consistency groups
• Host I/O time-stamping function
• Remote copy connections
• Ordinary target ports, initiator ports, and RCU target ports for fibre-channel
interface
• TrueCopy for z/OS software
• Error reporting communications