Launch a Rollover Scan

Required Tenable.io Vulnerability Management User Role: Scan Operator, Standard, Scan Manager, or Administrator

Required Scan Permissions: Can Control

When you launch a rollover scan, the scan runs only against targets that Tenable.io did not scan previously. This happens when a scan ends before scanning all the assigned targets, which happens when:

  • A user manually stops the scan

  • The scan times out due to the Scan Window setting

  • The scanner aborts scan tasks or does not initialize properly

Rollover scans allow you to achieve complete scan coverage for all your assets, and you can use the rollover feature to split up large, network-impacting scans. You can launch a rollover scan from the Vulnerability Management > Scans page. Tenable.io marks scans that you can launch a rollover scan for in the scan table with the Rollover tag in the Name column.

Note: To view the remaining targets that the rollover scan will run against, see Download a Rollover Target List.
Tip: If you want to restart the scan and rescan all the targets, see Launch a Vulnerability Management Scan.

To launch a rollover scan:

  1. In the upper-left corner, click the Menu button.

    The left navigation plane appears.

  2. In the left navigation plane, in the Vulnerability Management section, click Scans.

    The Scans page appears.

  3. In the Folders section, click a folder to load the scans you want to view.

    The scans table updates to display the scans in the folder you selected.

    For more information about scan folders, see Organize Scans by Folder.

  4. In the scans table, roll over the scan you want to launch.

  5. In the row, click the More button.

    A menu appears.

  6. Click the Launch Rollover option.

    Tenable.io launches the rollover scan.

    You can follow the scan's progress by checking its Scan Status on the Scans page.

    Note: Tenable.io limits scans to 100,000 findings or 10,000 assets (with at least one finding each) per 120 targets. If a scan exceeds either value, Tenable.io does not process the scan and eventually aborts it.