Hard disk drive (HDD)
Cylinder skew
Example to calculate a cylinder skew.
Interleaving means not leaving all sections contiguously and add some skip.
Disk interleaving at Wikipedia
Disk Arm Scheduling Algorithms
The hard disk controller selects the disk arm scheduling algorithm, and not the OS.
Disk arm scheduling algorithms:
- FIFO
- SSF
- Elevator
- C-SCAN
FIFO
First in first out (FIFO) is…
SSF
Short seek first (SSF) is…
Elevator
It comes from the idea that when an elevator gets the lobby floor it goes to the top floor immediately.
C-SCAN
C-SCAN
You might also be interested in…
- Operating systems
- Peripherals