Disk Storage Requirements

The process of planning for storage requirements is divided into capacity requirements and disk performance. Although a total capacity requirement can be determined, the performance requirements, as well as fault tolerance requirements, of the system will have an impact on the implementation of the storage subsystem. For example, a single drive could provide enough storage space, but the performance of that single disk may not meet the performance needs of the system.

Due to this, both capacity and performance requirements need to be met, which may alter the decision around the size, speed, and configuration of the drives in the storage subsystem.

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