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 for Mainframe/Hitachi ShadowImage for Mainframe (SI)
• Cnt Ac-S Z - Continuous Access Synchronous for Mainframe/Hitachi TrueCopy for Mainframe
(TC)
• Cnt Ac-J Z - Continuous Access Journal for Mainframe/Hitachi Universal Replicator for
Mainframe (UR)
• Cnt Ac-A - Continuous Access Asynchronous for Mainframe/Hitachi TrueCopy Asynchronous
for Mainframe (TCA)
NOTE: Continuous Access Asynchronous for Mainframe (Cnt Ac-A) is supported on models of
the HP XP Disk Array. Cnt Ac-A is not supported on the HP P9500 Disk Array. Business Continuity
Manager can be used with both P9500 and XP disk arrays. The XP disk array copy products can
be configured and controlled using the P9000 version of BCM. The HP product names are used
in this manual. For compatibility with existing implementations on XP disk arrays, the Hitachi
abbreviations shown in parenthesis are accepted by the user interface. The graphics in this manual
show the Hitachi abbreviations but your system may show the HP 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 for Mainframe (BC Z)
Duplicates volumes within a storage system.
Continuous Access Synchronous for Mainframe (Cnt Ac-S Z)
Performs and manages remote synchronized volume copy operations between a storage system
on the primary site and a storage system on the secondary site, so each S-VOL is always identical
to its P-VOL counterpart.
Products that can be controlled by Business Continuity Manager 19
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