Storage Arrays

Storage arrays have evolved with the development of information technology (IT) and new data requirements [1]. The earliest storage devices were the disks in computers and servers. As data volume increased, one or multiple individual disks were unable to meet the capacity requirements of applications. In addition, the high failure rate of disks made them unsuitable for the increasing need for reliability. Therefore, it became standard practice to separate disks from servers and manage them in a centralized pool. This pool serves as a unified storage space and provides data access and storage services for all hosts. Just a bunch of disks (JOBD) was the earliest example of such a storage array [2].