This preview shows page 1. Sign up to view the full content.
Unformatted text preview: middle of the tape, all the data before the one you want must be accessed and discarded. Although the modern streaming-tape systems have the capability of skipping over segments of tape, the tape must physically move through the read/write heads. Any physical movement of this type is time-consuming. See Figure 5.4. Magnetic Disks A disk drive is a cross between a compact disk player and a tape recorder. A read/write head (similar to the record/playback head in a tape recorder) travels across a spinning magnetic disk, retrieving or recording data. Like a compact disk, the heads travel directly to the information desired, and like a tape, the information is stored magnetically....
View Full Document
This note was uploaded on 01/13/2011 for the course CSE 1550 taught by Professor Marianakant during the Fall '10 term at York University.
- Fall '10