HP P9000 Replication Manager Software 7.2 CLI User Guide

• In a CCR environment, the replication function must be stopped before you perform a point-in-time
restore operation.
• If data on the active server becomes corrupted or if the database is restored, you must perform
seed processing (data resync).
If you use the automatic seed function, all seed processing is performed automatically during res-
toration. If you do not use this function, you must manually perform seed processing for each
storage group. If an error occurs during restoration using the automatic seed function, you must
manually perform seed processing on the storage group that resulted in the seed processing error.
The following describes how to perform manual seed processing:
• Stop the replication function.
• Delete the Exchange database file, the transaction log file, and the checkpoint file on the
standby server.
• Resynchronize the standby server with the active server data.
• Restart the replication function.
• If you use the automatic seed function, the EXG_CCR_SEED parameter value must be ON in the
Exchange environment configuration file that is specified in the -ef option of the restore command.
For details about the Exchange environment configuration file, see “Creating the Exchange envir-
onment configuration file” on page 213.
• If you use the automatic seed function, the Protection Manager service must be active on the
standby server.
• If you use the automatic seed function, the same version of Application Agent must be installed
on both the active and standby servers.
To use the automatic seed function, the same version of Application Agent must be installed on
both the active and standby servers.
• The following is a guideline for determining the time required for seed processing:
Seed processing time per storage group (seconds) = capacity-of-database-subject-to-seed-processing
(MB)/25 (MB/second)
For the above formula to be applicable, the following conditions must be satisfied:
• The network used for seed processing is a Gigabit Ethernet.
• The server used for seed processing has sufficient performance (such as CPU and disk perform-
ance) to adequately run the installed applications (such as Application Agent, Exchange
Server, and tape backup management softwares).
SCR configuration
• If you use the SCR seed function, the same version of Application Agent as the source must be
installed on all targets.
• If you use the SCR seed function, the EXG_SCR_SEED parameter value must be set to ON in the
Exchange environment configuration file that is specified in the -ef option of the restore command.
• If you use the SCR seed function, the Protection Manager service must be active on all targets.
• SCR is not supported in a cascade configuration.
• If you perform a point-in-time restore without using the SCR seed function, the replication function
to be restored will be stopped, but seeding or replication will not be restarted. After the restoration,
manually perform seed processing.
• To perform a backup for a database in an SCR configuration, the following conditions must be
satisfied:
• The source Microsoft Exchange replication service must be running.
• For storage groups in which SCR is enabled, replication statuses of all targets are Healthy.
Application Agent system configurations76