Hot Site Implementation with Live Database Server

C.

When implementing a hot site, an organization intends to have a backup location that can immediately assume its primary site's functions in the event of a disaster. To maintain a live database server at the backup site, the organization has several options, including electronic vaulting, remote journaling, remote mirroring, and transaction logging.

A. Electronic vaulting involves periodically copying data from the primary site to the hot site using electronic means such as magnetic tape, optical disks, or remote backup devices. Although it can be an effective way to ensure that data is backed up, electronic vaulting may not be the best solution for an organization that needs to maintain a live database server at the hot site since data may not be immediately available in the event of a disaster.

B. Remote journaling is a technique used to maintain a real-time copy of a database by recording all changes made to the database at the primary site and transmitting them to the hot site. This technique provides a fast and reliable way to ensure that data is available at the hot site, and it can be an excellent solution for an organization that needs to maintain a live database server at the backup site.

C. Remote mirroring involves maintaining an exact copy of a database at the hot site. Any changes made to the database at the primary site are immediately replicated at the hot site. This technique is often used for mission-critical databases since it provides an exact copy of the primary site's data and can be rapidly switched over in the event of a disaster.

D. Transaction logging is a technique used to record all changes made to a database. These changes are then transmitted to the hot site, where they are used to update the hot site's database. This technique provides an efficient way to ensure that data is available at the hot site, and it can be an excellent solution for an organization that needs to maintain a live database server at the backup site.

Considering the above, option C (Remote mirroring) or option B (Remote journaling) would be the best solutions for the organization's requirement of maintaining a live database server at the hot site. However, the ultimate decision will depend on the organization's specific needs and requirements.