1. T0542 / 12 - 01 Disk Hardware 1. Magnetic disk • Cylindes, tracks • IDE (Integrated Drive Electronics) • Overlapped seek • Logical block addressing DISKS Physical geometry vs possible virtual geometry

2. T0542 / 12 - 02 2. RAID Redundant Array of Inexpensive Disks 3. CD-ROMS Struktur penyimpanan dari CD atau CD-RO

3. T0542 / 12 - 03 Logical data layout pada CD-ROM Format Disk Suatu sektor pada disk

4. T0542 / 12 - 04 Interleaving •No interleaving •Single interleaving •Double interleaving

5. T0542 / 12 - 05 Disk Arm Scheduling Algorithms (1) •Tiga faktor yang menentukan waktu baca atau tulis pada disk block : • Seek time • Rotational delay • Actual transfer time •Seek time yang paling dominan

6. T0542 / 12 - 06 3. Elevator Algoritma Penjadwalan Lengan Disk 1.First Come First Serve (FCFS) 2. Shortest Seek First (SSF)