Secondary Storage: Seek, Rotational, Block Transfer Time, and Calculations for Contiguous , Study notes of Computer Science

Download Secondary Storage: Seek, Rotational, Block Transfer Time, and Calculations for Contiguous and more Study notes Computer Science in PDF only on Docsity! 8/19/2006 Dr. Wang, Cal State Fullerton 1 Secondary Storage Track Sector Cylinder 8/19/2006 Dr. Wang, Cal State Fullerton 2 Secondary Storage Seek time: read/write head on track. Rotational delay (latency): first sector (block) under head. Block transfer time: read/write one block. 8/19/2006 Dr. Wang, Cal State Fullerton 3 An Example (Seagate Cheetah) Capacity: 9 GB. Average seek time: 8 msec Spindle speed: 10,000 rpm. Average rotational delay? Half of one track => 3 msec. Transfer time per track? Rotation time per track=>6 msec Size of sectors: 512 bytes. Number of sectors per track: 170. Number of tracks per cylinder: 16. Number of cylinders: 6,526.