In the event of a data center disaster, which of the following would be the MOST appropriate strategy to enable a complete recovery of a critical database? 

Answer options:

A. Daily data backup to tape and storage at a remote site
B. Real-time replication to a remote site
C. Hard disk mirroring to a local server
D. Real-time data backup to the local storage area network (SAN)

B

With real-time replication to a remote site, data are updated simultaneously in two separate locations; therefore, a disaster in one site would not damage the information located in the remote site. This assumes that both sites were not affected by the disaster. Daily tape backup recovery could lose up to a day`s work of data. Choices C and D take place in the same data center and could possibly be affected by the same disaster.