Data Management

All Tenable Security Center repositories have Vulnerability Data Lifetime settings. The default value for data retention period is 365 days (other than passive vulnerability data, which has a default value of 7 days). The more assets you scan, the more data Tenable Security Center has to store and retain in your repositories. Hence, Tenable recommends adjusting this value according to your organization’s data retention policies. Consider the disk space required to store all of this vulnerability data for all of your assets.

In addition, all newly created repositories have a default setting of 30 days of trending data. Trending data requires additional disk space, therefore you must adjust the setting for Trending according to your disk space availability as well.

Note: Trending data takes up the largest portion of disk space in typical Tenable Security Center deployments.

For more information about the hardware requirements for Tenable Security Center, see Disk Space Requirements in the Tenable Security Center documentation.