Disk scheduling

Disk Scheduling Chapter 14 Based on the slides supporting the text and B.Ramamurthy’s slides from Spring 2001

User-Space I/O Software ,[object Object]

Disks Disk Hardware (1) ,[object Object]

Disk Structure ,[object Object],[object Object],[object Object],[object Object]

Disk Scheduling ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Disk Scheduling (Cont.) ,[object Object],[object Object],[object Object],[object Object]

FCFS Illustration shows total head movement of 640 cylinders.

SSTF ,[object Object],[object Object],[object Object]

SCAN ,[object Object],[object Object],[object Object]

C-SCAN ,[object Object],[object Object],[object Object]

C-LOOK ,[object Object],[object Object]

Selecting a Disk-Scheduling Algorithm ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

RAID ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Raid Levels(continued) ,[object Object],[object Object]

Raid Levels (continued) ,[object Object],[object Object]

Raid Levels 6 and 7 ,[object Object],[object Object]

Disk Attachment ,[object Object],[object Object],[object Object]

Recommended