Storage: Magnetic Tape

Recording

• Inspect the disc for flaws and dirt BEFORE recording on it.
• Only open a recordable disc just before you plan to record on it.
• After recording, make sure the disc works as you expect: Read data; run programs.

Complete recommendations from NIST and Quick Reference Guide as part of the "Digital Preservation Program" sponsored by the US National Institute of Standards and Technology, designed to give libraries and museums guidance on how to preserve digital data.
(in pdf format. Requires Adobe Acrobat Reader )

Magnetic tape uses a method similar to that of VCR tape for storing data.

The speed of access can be quite slow, however, when the tape is long and what you want is not near the start. So this method is used primarily for major backups of large amounts of data.

Businesses especially might do a backup of the day's transactions every day and a backup of the whole system once a week or so. Keeping sets of backups like this minimizes the amount of data loss when the computer system goes down.

Дата добавления: 2014-12-23