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hard disk |
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hard diskIn computing, a storage device usually consisting of a rigid metal disk coated with a magnetic material. Data are read from and written to the disk by means of a disk drive. The hard disk may be permanently fixed into the drive or in the form of a disk pack that can be removed and exchanged with a different pack. Hard disks can have capacities as high as 500 gigabytes, with different versions intended for use with mainframe or personal computers. |
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| Fixed disk libraries rely on modern replication technologies to move data offsite for disaster recovery; they only allow for disk removal to replace defective disks. More expensive, somewhat heavier laptop PCs contain more advanced processor chips and two disk drives, possibly including a 20-meg or larger fixed disk. Small businesses are replacing low-end tape and fixed disk storage with RDX technology because it's fast, safe, transportable and easy to use. |
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