DOC HOME SITE MAP MAN PAGES GNU INFO SEARCH PRINT BOOK
 

(cpio.info.gz) Media

Info Catalog (cpio.info.gz) Invoking cpio (cpio.info.gz) Top (cpio.info.gz) Reports
 
 4 Magnetic Media
 ****************
 
 Archives are usually written on removable media-tape cartridges, mag
 tapes, or floppy disks.
 
    The amount of data a tape or disk holds depends not only on its size,
 but also on how it is formatted.  A 2400 foot long reel of mag tape
 holds 40 megabytes of data when formated at 1600 bits per inch.  The
 physically smaller EXABYTE tape cartridge holds 2.3 gigabytes.
 
    Magnetic media are re-usable-once the archive on a tape is no longer
 needed, the archive can be erased and the tape or disk used over. Media
 quality does deteriorate with use, however.  Most tapes or disks should
 be disgarded when they begin to produce data errors.
 
    Magnetic media are written and erased using magnetic fields, and
 should be protected from such fields to avoid damage to stored data.
 Sticking a floppy disk to a filing cabinet using a magnet is probably
 not a good idea.
 
Info Catalog (cpio.info.gz) Invoking cpio (cpio.info.gz) Top (cpio.info.gz) Reports
automatically generated byinfo2html