When you use Virtual SAN in manual mode, you can add local disks to existing disk groups.
- Browse to the Virtual SAN cluster in the vSphere Web Client navigator.
- Click the Manage tab and click Settings.
- Under Virtual SAN, click Disk Management.
- Select the disk group, and click the Add a disk to the selected disk group icon.
- Select a disk to add and click OK.
The disk appears on the list of disks that belong to the disk group.