Performing a Disaster Recovery Backup
You can manually initiate disaster recovery (DR) backups for CommServe databases.
Before You Begin
- Login to CommCell Console as user with CommCell level Administrative Management capability.
- Make sure CommCell services are running on the CommServe host.
About This Task
By default, a full disaster recovery (DR) backup is performed daily for any CommServe database. Based on the security requirements of a CommServe and recovery point objective of the disaster recovery plan, you can schedule the disaster recovery backup jobs several times in a day. For more information on scheduling DR backups jobs, see Schedule Disaster Recovery Backups.
A disaster recovery plan should consist of at least one full backup performed every day and full or differential disaster recovery backups performed several times in a day. Differential DR backups will back up only that data that has changed since the last full backup. This backup smaller in size and takes less time to complete.
A disaster recovery backup job has the highest priority. If a Disaster Recovery Backup job cannot be completed, the Job Manager will retry the job up to a total of five hours at 30-minute intervals for a maximum of 10 times.
For minimum impact to production jobs, run disaster recovery backups when no other CommCell jobs are running.
By default all CommServe databases are included. We recommend you do not exclude any database from the backup job.
- From the CommCell Browser, right-click the CommServe node and click All Tasks | Disaster Recovery Backup.
- In the General tab of the Disaster Recovery Backup Options dialog box select the one of the following backup type:
- Full - Backup of an entire metadata.
- Differential - Backs up only that data in the metadata that has changed since the last full backup. This backup smaller in size and takes less time to complete. However, you can use this backup to restore the metadata only if the last full backup is accessible.
By default a Full backup type is selected. We recommend you do not use Differential backup type unless there is a disk space or network bandwidth limitation.
- Select the following options if sufficient space is not available on the CommServe host:
- Select the Shrink Db check box to minimize the space usage on the database and database log file prior to the backup operation.
- Select the Enable database(s) backup compression check box to compress the database backup file (*.dmp).
- Click the Client Selection tab to back up the log files from clients in the CommCell.
- Select the Client(s) from the available list of Clients and click OK.
You can also select MediaAgent clients to back up the log files from MediaAgents. This is useful for troubleshooting purposes, especially in Deduplication configurations.
For more information on the backup options, see Disaster Recovery Backup Options.
For each Disaster Recovery Backup, SET_XXX directory is created under the configured export location. xxx is a sequential number for the directory. The highest number is associated with the latest disaster recovery backup. It contains the following files:
|commserv_FULL.dmp||This full dump file represents a full backup of the CommServe database.|
|commserv_DIFF_xxx.dmp||This dump file represents a differential backup of the CommServe database.|
|Other Files||Depends on the software module installed/configured, e.g., workflow database files.|
Note: The DR backup operation runs a database consistency check on all the databases included in the DR backup. If the consistency check fails on any database, the DR backup job fails and disables all job activities on the CommServe server.