a database administrator can choose how many disks are organized into a single raid 5 array. what are the trade-offs between having fewer disks versus more disks, in terms of cost, reliability, performance during failure, and performance during rebuild?

Storage is the term used to describe the process of keeping and maintaining data and information for future use. It involves the use of computer hardware and software to store, organize, and manage data in order to make it easily accessible by users. Storage can take many forms, including hard drives, flash drives, magnetic tapes, and cloud-based systems. Storage is essential for almost any type of organization, as it enables data to be accessed, manipulated, and shared quickly and securely.
Reliability: Fewer disks mean less redundancy, and thus may lead to greater risk of data loss during a failure.
Performance During Failure: With fewer disks, the system may be unable to withstand the loss of more than one disk in the array.
Performance During Rebuild: Fewer disks mean faster rebuilds, as less data needs to be written.
More disks mean higher cost, but also larger storage capacity. More disks also increase the redundancy of the array, and thus provide greater reliability during a failure. Performance during a failure is also improved, as more disks can be lost without compromising the system. Performance during rebuild is also improved, as more data needs to be written.
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