Which of the following information should you minimally keep in a backup maintenance log? Choose all correct options.

A.
Information on the types of backups performed.

B.
Information on the dates when backups were performed.

C.
Information on the locations used to store backup tapes.

D.
All of the above.

Explanation:
The backup maintenance log should be an important source of information on the backup state of a system. The backup maintenance log should be updated immediately after backups are performed. The log should minimally contain information on the types of backups performed, the dates that the backups were performed, and the locations where backups are stored. You should include onsite and offsite storage information.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 443.