Background
Cisco Access Control Server view data can easily use a large amount of disk space. To efficiently manage data and to make good use of the disk space, you must back up your data regularly and purge unwanted data that uses up necessary disk space. Purging data deletes it from the database.
Backup Options
The incremental backup option enables you to take a complete backup of your Monitoring and Report Viewer database once and then to back up data incrementally (that is, only the updates are backed up and stored separately) from the next time onwards. Incremental backups can be scheduled in the Access Control Server GUI.
An incremental backup performs a full database backup the first time it is run, and subsequently only backs up the updates that are made to the database. Incremental backups are therefore much faster and make efficient use of disk space. You can also configure the frequency and time of incremental backups.
With incremental backups, multiple backup files are stored in the repository. However, when you restore data from an incremental backup, ACS restores data from all the backup files starting from the full backup and continuing until the latest incremental backup.
Note: You cannot concurrently run an incremental backup, full backup, and data purge. If any of these jobs are running, you must wait for a period of 90 minutes before you can begin the next job.
Optimal Backup Schedule for View Database
|
Day \ Time |
Operation |
|
Daily @ 12 AM |
Incremental View DB Backup |
|
Monthly @ 2 AM |
Full View DB Backup |
|
Daily @ 4 AM |
Data Purge |
|
Daily @ 5AM |
View Database Compression |
Optimal High Level View DB Backup & Purge
A full backup should take place one time per month. This should be configured to take place immediately after an incremental finishes.
When incremental backup is enabled data is purged daily at 4:00 a.m. at the local time zone where the ACS instance that runs the View process is located. This time is not configurable.
When Database Compression is enabled the compression operation runs automatically every day at 5 a.m. This time is not configurable. It is recommended to perform database compress during the maintenance hours. DB compress may take long time depends on the database size. Database compress should be done after the purge operation gets completed.
NOTE: If a daily Incremental Backup is not enabled along with a Monthly Full Backup the database purge process fails.
Configuring Incremental Backup
- Turn Incremental Backup on by selecting the On radio button.
- Configure a Data Repository for both Incremental and Full View DB Backup.
- Select a scheduled time and a Frequency.
Working with the Scheduler
Occasionally when you make changes to Scheduled Tasks you will need to restart the JobManager service. In order to restart the Job Manager service, login to the server that holds the View DB. Then run the command acs stop view-jobmanager you will see the service stop and then it will be in the ‘not monitored’ state.
Then start the service by running the command acs start view-jobmanager to restart the service.
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