This type of backup management provides a continuous on-line backup by using optical or tape "jukeboxes," similar to WORMs (Write Once, Read Many):
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A. B. C. D.A.
Hierarchical Storage Management (HSM) provides a continuous on-line backup by using optical or tape "jukeboxes," similar to WORMs.
Source: KRUTZ, Ronald L.
& VINES, Russel.
D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, 2001, John Wiley & Sons, Page 71.
The correct answer to the question is A. Hierarchical Storage Management (HSM).
Hierarchical Storage Management (HSM) is a data storage technique that involves automatically and transparently moving data between high-performance and low-performance storage media. It optimizes storage efficiency by identifying frequently accessed data and moving it to faster storage media, while less frequently accessed data is moved to slower or less expensive storage media.
HSM uses optical or tape "jukeboxes" that act like WORMs (Write Once, Read Many). These jukeboxes are robotic libraries that store multiple removable storage devices, such as tapes or optical disks. The jukebox automatically loads and unloads the disks, making it an efficient way to store large amounts of data.
HSM is used to provide a continuous on-line backup by making sure that data is always available, even in the event of a hardware failure or other disaster. By maintaining multiple copies of data across different storage media, HSM ensures that data can be easily restored from backup in case of a failure.
In contrast, the other answer options are not related to backup management:
Hierarchical Resource Management (HRM) is a technique for managing computer resources, such as CPU time, memory, and disk space.
Hierarchical Access Management (HAM) is a technique for managing access to resources, such as files and folders, based on user permissions.
Hierarchical Instance Management (HIM) is a technique for managing software instances or virtual machines, typically in a cloud computing environment.