Ccr configuration – HP Serveur lame HP ProLiant BL465c Gen8 User Manual
Page 77
•
If an error occurs after backup of the local site is complete but before backup of the remote site
is complete, you cannot restore using the data backed up at the local site.
•
Before you restore, you must use the RAID Manager command to set the Remote Copy pair status
to
PSUS
(
SSUS
).
•
You can only restore backup data obtained at the site that is being restored. You cannot restore
backup data that was obtained at a different site.
CCR configuration
•
With a CCR configuration, you must manage dictionary map files and backup catalogs separately
for the active and standby servers. The dictionary map files and backup catalogs acquired by
each of the servers are used by the respective database servers and by the backup servers used
by these database servers.
•
If the active and standby servers use the same backup server, the active and standby servers must
use different copy group names for the disk to which the backups are saved.
•
The active and backup servers cannot back up the same storage group concurrently. Wait until
execution of the backup command is finished on the first server before you begin backup on the
other server.
•
With VSS backup, the active and backup servers can back up different storage groups concurrently.
•
If a transaction log is deleted, roll-forward cannot be performed using backup data that was ac-
quired earlier than the deleted transaction log.
•
Backup data can be restored only to the node on which the backup was performed. The backup
data acquired at the active server cannot be restored to the standby server, and the backup data
acquired at the standby server cannot be restored to the active server.
•
To restore a backup acquired at the standby server, you must perform a fail-over operation on the
active server so that the standby server is switched to the active server.
•
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 “
•
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.
Application Agent CLI User Guide
77