"File system /storage/archive is low on storage space" warning in vCenter Server Appliance 6.7/7.x/8.x/9.x

This volume stores as much WAL history as possible, and is automatically cleaned up by the archiver service by automatically removing the oldest WAL segments.
This issue does not affect any operations of vCenter Server as the /storage/archive partition can be full by design.

You can run into this error during a vCenter 7.x or 8.x patch upgrade, reboot the vCenter and try again.
If you would like to delete files automatically when the vCenter /Storage/archive partition is full, see article,  The full /Storage/archive partition causes an alert for the customer's monitoring application