• Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint
Share this Page URL
Help

Chapter 14. PROTECTING NETWORK DATA > Understanding Hard Drives

Understanding Hard Drives

Hard drives (or fixed disks) store information magnetically. They are actually made up of rigid cylinders and have a read/write head, much like any other magnetic recording device.

Because hard drives have extremely rigid, durable cylinders, they can spin at very high speeds. This means that the data on the disk can be accessed quickly (definitely faster than floppy drives and most removable media drives). Disk speed (or access time) is measured in milliseconds and is related to the time it takes a drive to access data. The lower the access time, the faster the drive. For example, an 11 ms drive would be faster than a 28ms drive.


PREVIEW

                                                                          

Not a subscriber?

Start A Free Trial


  
  • Creative Edge
  • Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint