The Backup disk is a small disk with a backup of Dr. Caroll's personality, found in the G5 Building's safe and required to complete the mission. It later shows up in Deep Sea on Perfect Agent difficulty, where it is used on the corrupted Dr. Carroll.
The last personality-state recording of the artificial intelligence, self-designated Dr. Caroll, prior to memory wipe and cerebral restructuring. Use for case study, theoretical projects only. Morally incorrupt, and therefore dangerous. DataDyne I.S.C.E.O. 23/6/23