HP XP Racks - Manual (Page 22)

This centralized management of both open-system and mainframe-system storage can provide a
number of advantages, including reduced operation times and quicker responses to failures.
Products that can be controlled by Business Continuity Manager
HP storage systems provide replication products such as Business Copy Z, Continuous Access
Synchronous Z, and Continuous Access Journal Z. Business Continuity Manager can control these
replication products to create highly reliable backup data.
A volume that contains the original data is called a primary volume (P-VOL). P-VOLs exist in storage
systems that are directly connected to a host where Business Continuity Manager is installed.
Remote storage systems (or in the case of Business Copy, duplicate volumes) are the copy
destinations. A volume that contains duplicate data (a copy of the data on the P-VOL) is called a
secondary volume (S-VOL).
A copy pair is a designated relationship between a P-VOL and an S-VOL. P-VOL and S-VOL pairings
have an associated copy type that identifies the duplication or replication solution in use. An S-VOL
of one pair (using one copy type) can also be the P-VOL for another S-VOL (which uses a different
copy type).
Business Continuity Manager can control the following replication products:
•
BC Z – Business Copy Z/Hitachi ShadowImage for Mainframe (SI)
•
Cnt Ac-S Z – Continuous Access Synchronous Z/Hitachi TrueCopy for Mainframe (TC)
•
Cnt Ac-J Z – Continuous Access Journal Z/Hitachi Universal Replicator for Mainframe (UR)
•
TCA – Hitachi TrueCopy Asynchronous for Mainframe (TCA)
:
Hitachi TrueCopy Asynchronous for Mainframe (TCA) is supported on some HP XP Disk Arrays.
TCA is not supported on the HP XP7 Storage, or the HP XP P9500, XP20000, and XP24000 Disk
Arrays. Business Continuity Manager can be used with HP XP7 Storage and all of the other HP XP
disk arrays. The HP XP disk array copy products can be configured and controlled using the HP
XP7 version of BCM. The HP product names are used in this manual. For compatibility with existing
implementations on HP XP disk arrays, the Hitachi abbreviations shown in parenthesis are accepted
by the user interface. The graphics in this manual show the HP abbreviations but your system may
show the Hitachi abbreviations.
Throughout this manual, each copy pair type is referred to by its full name as well as its abbreviation,
although many of the Business Continuity Manager ISPF panels only use the abbreviation. When
a field on a Business Continuity Manager ISPF panel uses an abbreviation for any of these terms,
any related text in the manual follows the ISPF terminology and lists the full term in parentheses.
The following subsections explain each copy type in detail.
Business Copy Z (BC Z)
Duplicates volumes within a storage system, asynchronously to host I/O processing.
22 Overview of HP XP7 for Business Continuity Manager