Disk Usage for Device Configuration History Files

The Disk Usage health module monitors the size of the device configuration history files on the management center and sends a health alert if the size exceeds the allowed limit. The maximum disk size allowed for storing the device configuration history files is 20 GB. In a management center high-availability deployment, this health alert appears on the standby management center only when high-availability synchronization is paused.

The size of device configuration history files exceeding the allowed limit can cause upgrade readiness failure while upgrading the management center. In a management center high-availability deployment, exceeding the device configuration history file size limit can reduce high-availability synchronization speed.

To resolve the device configuration history files size health alert, choose Deploy > Deployment History > Deployment Setting > Configuration Version Setting and reduce the Number of Versions to Retain. Reducing the number of versions removes the oldest configuration versions to match the version size you have selected. The Estimated Configuration Version Size provides the approximate size for the configuration history files on the management center, based on the number of versions you choose to retain. Change the number of versions using the estimated value to decrease the size of configuration versions below the allowed limit.

For more information, see Set the Number of Configuration Versions in Cisco Secure Firewall Management Center Device Configuration Guide.