MASS STORAGE STRUCTURE
Overview
ü One of
the responsibilities of the operating system is to use the hardware
efficiently.
ü For the
disk drives,
o A fast access time and
o
High disk bandwidth.
ü The
access time has two major components;
ü The seek
time is the time for the disk arm to move the heads to the cylinder containing
the desired sector.
ü The
rotational latency is the additional time waiting for the disk to rotate the
desired sector to the disk head.
ü The disk
bandwidth is the total number of bytes transferred, divided by the total time
between the first request for service and the completion of the last transfer.
ü We can
improve both the access time and the bandwidth by disk scheduling.
ü Servicing
of disk I/O requests in a good order.
Related Topics
Privacy Policy, Terms and Conditions, DMCA Policy and Compliant
Copyright © 2018-2024 BrainKart.com; All Rights Reserved. Developed by Therithal info, Chennai.