A hard disk platter has the following characteristics: - 520,000 tracks per disk (520,000 tracks per disk's
Question:
A hard disk platter has the following characteristics:
- 520,000 tracks per disk (520,000 tracks per disk's surface)
- 40 sectors per track
- 512 bytes of data per sector
- Avg. seek time = 10 msec
- Rotation rate = 3000 RPM
- Transfer rate = 3.6 Mbps
- Controller overhead = 5.5 msec
- Data can be stored on both the upper and lower surfaces of the disk platter.
A.) How much data can be stored in a single disk platter?
B.) How many disk platters are required to store 250GB of data?
C.) What is the average time to read files from a data block of size 8kb in both the sectors opposite to each other in the same cylinder?
**Use binary conversion (Ex 1Mb = 2 20 bytes and 1Kb = 1024 bytes)
Process Dynamics And Control
ISBN: 978-0471000778
2nd Edition
Authors: Dale E. Seborg, Thomas F. Edgar, Duncan A. Mellich