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2. Hard disk drive - Wikipedia

   en.wikipedia.org/wiki/Hard_disk_drive

   A hard disk drive (HDD), hard disk, hard drive, or fixed disk [a] is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnetic material.

3. Magnetic-tape data storage - Wikipedia

   en.wikipedia.org/wiki/Magnetic-tape_data_storage

   The device that performs the writing or reading of data is called a tape drive. Autoloaders and tape libraries are often used to automate cartridge handling and exchange. Compatibility was important to enable transferring data. Tape data storage [2] is now used more for system backup, [3] data archive and data exchange. The low cost of tape has ...

4. Magnetic storage - Wikipedia

   en.wikipedia.org/wiki/Magnetic_storage

   Hard drives use magnetic memory to store giga- and terabytes of data in computers. Information is written to and read from the storage medium as it moves past devices called read-and-write heads that operate very close (often tens of nanometers) over the magnetic surface. The read-and-write head is used to detect and modify the magnetisation of ...

5. Disk-based backup - Wikipedia

   en.wikipedia.org/wiki/Disk-based_backup

   Backing up data to a backup-to-disk technology can be up to four times faster than traditional SCSI tape devices. While the new Serial Attached SCSI (SAS) connected tape drives are faster than the original tape drives, the disk appliance is still faster than most tape technologies. These faster backup times lead to shorter backup windows ...

6. Backup - Wikipedia

   en.wikipedia.org/wiki/Backup

   In information technology, a backup, or data backup is a copy of computer data taken and stored elsewhere so that it may be used to restore the original after a data loss event. The verb form, referring to the process of doing so, is "back up", whereas the noun and adjective form is "backup". [1]

7. Tape drive - Wikipedia

   en.wikipedia.org/wiki/Tape_drive

   A tape drive is a data storage device that reads and writes data on a magnetic tape. Magnetic-tape data storage is typically used for offline, archival data storage. Tape media generally has a favorable unit cost and long archival stability. A tape drive provides sequential access storage, unlike a hard disk drive, which provides direct access ...