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Disk drives are a relatively fast, reliable, and economic way to store and access data, applications, and operating systems. Server storage typically consists of removable storage and permanent storage. Removable storage includes CD-ROM drives, disk drives, and tape backup drives. Permanent storage includes IDE disk drives and SCSI disk drives. 1.6.1 Drive ArraysHP is a leader in drive array storage technology. An array, sometimes called a RAID array, is a set of disks that acts like a large single disk, thereby providing higher performance and data fault tolerance than a multidisk system. Because storage needs have expanded beyond the server and the types of storage devices have increased, the need for a high-speed connection between servers and storage devices has become critical. Storage solutions designed to meet these needs include the following:
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