Filter
Top Products
15-4
User Guide for Cisco Secure Access Control System 5.4
OL-26225-01
Chapter 15 Managing System Operations and Configuration in the Monitoring and Report Viewer
Configuring Data Purging and Incremental Backup
If you enable incremental backup, 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.
In ACS 5.4, the view database is allocated based on the opt partition size. ACS View database is 42
percent of opt partition size.
The following database limitations apply for purging:
• If the database disk usage is greater than 60 percent of the allocated view database size, an alarm is
sent to the dashboard.
• If the database disk usage is greater than 80 percent of the allocated view database size, a backup is
run immediately followed by a purge until the database disk usage is below 60 percent of the
allocated view database size. If the backup fails, check the database disk usage again. The
Monitoring and Report Viewer data is purged from the database. The oldest data is purged first.
–
If the database disk usage is greater than 60 percent of the allocated view database size, a
backup is run immediately followed by a purge until the database disk usage is below 60 percent
of the allocated view database size.
–
If the backup fails and the database disk usage is greater than 60 percent of the allocated view
database size, the Monitoring and Report Viewer decides to wait.
For example:
• If you specify that you want to preserve one month of data, and the database size is greater than
100 percent of the allocated view database size within a month, the purge deletes the data on a
weekly basis until the database size reaches 80 percent of the allocated view database size.
• If you specify that you want to preserve more than one month (for example, 5 months of data)
but the database size is over 80 percent of the allocated view database size, a purge occurs. If
the database size remains over 80 percent of the allocated view database size after the purge, an
additional month of data is purged, which results in 4 months of data preserved. Before the
purge, the database is backed up.
• If the database size is over 100 percent of the allocated view database size, a purge occurs regardless
of whether or not a database backup has occurred. If the database size remains over 80 percent of
the allocated view database size, additional purges occur until the database is 80 percent of the
allocated view database size.
Note If the Incremental backup is configured as ON with no repository configured, database backup will fail
and Incremental backup mode will be changed to OFF.
Note When incremental backup is disabled, data is purged at the end of every month (Local time).
You can use the Data Purging and Incremental Backup page to:
• Configure purge window size
• Purge data from the database
• Assign a data repository backup location to manage backup (of the purge job)
• Configure incremental and full backup schedules
• Configure immediate backup.
The ACS Database needs to be compressed as a part of maintenance operation. You can run the
acsview-db-compress command from acs-config mode to reduce the physical size of the view database
when there is a difference between the physical size and actual size of the view database. ACS 5.4 stops