What advantage does disk-based backup offer?

The advantage of increased accessibility provided by disk-based backup systems is significant in today's data management landscape. Unlike traditional tape backups, disk-based systems allow for rapid access to data. Because data can be stored in a way that enables quick searches and retrieval, users can easily find and restore files without the delays often associated with tape storage. The architecture of disk storage typically allows for parallel reading, which can enhance performance further.

While portability is a consideration for various storage methods, it's more commonly associated with removable devices, rather than the inherent accessibility features of disk storage. Lower costs compared to tape certainly can be true in many scenarios, but this is not universally the case, as costs can vary based on the specifics of the system and the environment. Speedier manual retrieval can be a factor, but it does not fully capture the streamlined and efficient access capabilities that disk-based systems provide compared to the often cumbersome processes involved with tape systems. Thus, increased accessibility is the standout advantage that disk-based backup offers.