INTRODUCTION
Digital technology depends heavily on reliable storage devices. A number of storage technologies co-exist because there is as yet no one ideal solution. Given the use of error correction to allow arbitrary reliability, the main ways of comparing storage devices are cost per bit and access time. These attributes are usually incompatible. The hard disk drive evolved to provide rapid access, whereas the rotary head tape evolved to provide low-cost bulk storage. Technology will continue to advance, and as a result recording densities of all media will continue to increase, along with improvements in transfer rate. The large market for ...
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