Operating Systems - Fall 2006, Homework 9

Operating Systems, Fall 2006, Homework 9

This homework will be covered in practise session on Thursday 16.11.2006 (week 46).

The exercises are based on chapters 11 and 12.

RAID
1. Problem 11.13 from text book [Stal05, p. 526] [Stal01, p. 515].
2. Which RAID level would be best for performance? How should one organize the data to maximize performance?
3. Which RAID level would be best for reliability? How should one organize the data to maximize reliability?
4. How do RAID 4 and RAID 5 differ in performance and reliability?
Problem 12.6 from text book [Stal05, p. 577] [Stal01, p. 562]
What are the biggest differences between Linux and W2K I/O systems as compared to basic techniques given in Ch 11. How do they differ from each other?
1. I/O interrupt handling?
2. device drivers?
3. plug-and-play?
4. raid?
5. file cache?
Problems 11.10 and 11.11 from text book [Stal05, p. 525] [Stal01, p. 514-515] Mistakes in the old version! The problem referenced in problem 11.10 is 11.9 (not 11.7). Likewise the problems 11.9 refers to 11.8 and 11.8 refers to 11.7.