1. It is possible for the block size for a file system to be less than, equal to, or greater than the size of the block size provided by the physical disk. Discuss the advantages and disadvantages of each approach and any impacts on the file system.
2. Discuss how cache, block read ahead, and reducing disk arm motion can be used for file system optimization.
3. Discuss FCFS, SSF, Elevator disk scheduling algorithms, how they work and their advantages and disadvantage.