Backupoperatortoda.exe -

He disconnected the network cable. The file remained. He tried to delete it. Access Denied. He tried to take ownership. Unable to set new owner: The security database is corrupted.

This file had read the security group membership from the domain controller. backupoperatortoda.exe

At 2:47 AM, his pager went off. Not the monitoring system. A direct page from the backup server itself—a machine with no pager capability. He disconnected the network cable