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Storage Networking Fundamentals: An Introduction to Storage Devices, Subsystems, Applications, Management, and Filing Systems by Marc Farley

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Tape Drives

Tape drives are used universally for backup and restore operations. While there are far fewer tape drives than disk drives, the function they provide is very important. The primary difference between tape and disk storage is that tape media is removable, which means it can be transported for safekeeping from disasters as well as being a mechanism for sharing data over the “sneaker net.”

NOTE

Sneaker net is certainly not the only way tapes have been used to share data. Companies have used courier services, air cargo, and even refrigerated trucks to move tapes from one site to another to share data.

One of the less-obvious differences between disk drives and tape drives is their read/write ratios. While disk drives are most often used ...

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