HP XP P9000 Continuous Access Synchronous for Mainframe Systems User Guide

Interfaces
You perform Cnt Ac-S Z operations using one of the following interfaces:
• Remote Web Console, which is a browser-based interface from which Cnt Ac-S Z is set up,
operated, and monitored. The GUI provides the simplest method for performing operations,
requiring no previous experience.
◦ The main system must be LAN-attached to a Remote Web Console computer.
◦ The remote system should also be LAN-attached to a separate Remote Web Console at
the remote site. This allows you to perform operations more efficiently on the remote
system in the event that the main or primary site is not available.
• RAID Manager, which is a command line interface used to display pair information and
perform all copying and pair-managing operations from the UNIX or PC server to the storage
system. RAID Manager provides a full scripting capability that can be used to automate
replication operations.
• Business Continuity Manager (BCM), which is a command line interface from which pair
operations are run and pair status is monitored. BCM commands are issued from the host to
the storage system.
• PPRC, with which most operations can be performed from the host. All XP P9500 storage
systems support IBM PPRC host software functions.
Failover software
Host failover software is used to transfer information between host servers at the local and remote
sites. It is a critical component of any disaster recovery solution.
• When Cnt Ac-S Z is used as a disaster recovery tool, host failover is required to ensure effective
recovery operations.
• When Cnt Ac-S Z is used as a data migration tool, host failover is recommended.
Cnt Ac-S Z does not provide host failover functions. Use the failover software most suitable for your
platform and requirements (for example, Microsoft Cluster Server).
Error reporting communications
Error reporting communications (ERC) transfers information between host processors at the main
and remote sites. It is a critical component of a disaster recovery effort.
Overview of initial, update copy operations
When you perform the initial copy operation, all the data in the P-VOL is copied into the S-VOL.
Thereafter, Cnt Ac-S Z and the main and remote systems run update copy as often as updates are
sent by the host. The update operation copies host updates to the S-VOL at the same time that they
are copied to the P-VOL.
The following figure illustrates the initial copy and update copy operations.
Interfaces 11