Hitachi TrueCopy for z/OS (T1711-96009, June 2006)

TrueCopy for z/OS user guide 15
1 TrueCopy for the XP1024/XP128/XP12000/XP10000
TrueCopy (TC390) creates and maintains remote copies of the S/390® data stored on the
XP1024/XP128/XP12000/XP10000 for data duplication, backup, and disaster recovery purposes.
TC390 provides synchronous and asynchronous copy modes to accommodate a wide variety of user
requirements and data copy/movement scenarios. TrueCopy Asynchronous (TC390A) provides a superior
hardware-based solution for data duplication, data migration, remote copy, and disaster recovery tasks.
NOTE: This manual refers to the "z/OS" operating system, however, other operating systems are also
supported. Contact your HP account support representative for a list of supported operating systems.
NOTE: In this chapter, the term “TC390” refers to both TrueCopy Synchronous and TrueCopy
Asynchronous unless otherwise noted.
TC390 operations are nondisruptive, allowing the main (primary) volume of each TC390 pair to remain
online to all hosts for both read and write I/O operations. After operations have been established, TC390
operations continue unattended to provide continuous data backup. For serial interface connection, TC390
operations can be performed across distances of up to 43 km (26.7 miles) using standard ESCON®
support. For Fibre Channel connection, TC390 operations can be performed across distances of up to 30
km (18.6 miles) using single-mode longwave optical fibre cables in a switch configuration. Long-distance
solutions are provided, based on user requirements and workload characteristics, using approved channel
extenders and communication lines. TC390 is a key component of HP’s solutions and service offerings.
After hardware connectivity between XP1024/XP128/XP12000/XP10000 (or between
XP1024/XP128/XP12000/XP10000 and other XP disk arrays) is established, TC390 operations can be
performed from Command View XP or XP Remote Web Console and/or from the zSeries and S/390
system software for maximum usability:
• TC390 running under Command View XP or XP Remote Web Console displays detailed TC390
information and performs all TC390 operations. In the event of a system failure or disaster at the main
site, the TC390 software also simplifies and expedites disaster recovery procedures. For operating
systems that do not support Peer-to-Peer Remote Copy (PPRC) or ICKDSF PPRCOPY commands, TC390
operations are performed using Command View XP or XP Remote Web Console.
• TC390 is functionally compatible with industry-standard IBM® Peer-to-Peer Remote Copy (PPRC) host
software functions. PPRC TSO commands (or ICKDSF PPRCOPY commands) combined with disaster
recovery PTFs may be used to perform TC390 and disaster recovery operations on
XP1024/XP128/XP12000/XP10000. TC390 supports the PPRC/Dynamic Address Switching (P/DAS)
host software function so you can use TC390 to relocate volumes nondisruptively. TC390 also supports
the PPRC CGROUP TSO command, which is used with IBM’s Geographically Dispersed Parallel
Sysplex® (GDPS) service offering.
TC390 can be performed in conjunction with ShadowImage (SI390) (see ”Other Data Duplication
Features” on page 15) to provide multiple internal copies of TC390 volumes. TC390 also supports the
Virtual LVI/LUN and Cache LUN XP features of the XP1024/XP128/XP12000/XP10000, ensuring
that all zSeries and S/390 user data can be protected by TC390 remote copy operations. For more
information on combining TC390 with other data management features, see ”Combining TrueCopy
with Other Data Management Operations” on page 58.
Other Data Duplication Features
In addition to TC390, the XP1024/XP128/XP12000/XP10000 provides several other data duplication
features that are described below. For more information about these features, contact your HP account
support representative.
Business Copy XP and ShadowImage
You can use the Business Copy (BC) XP and SI390 data duplication features to set up and maintain
multiple copies of logical volumes within the same XP1024/XP128/XP12000/XP10000. BC operations