Cylinder Allocation; Performance Characteristics - IBM DDRS-39130 - Ultrastar 9.1 GB Hard Drive Specifications

3.3 Cylinder Allocation

System Area
Data Zone 0
Data Zone 1
Data Zone 2
Data Zone 3
Data Zone 4
Data Zone 5
Data Zone 6
Data Zone 7
System Area
Mode page 03 (Format Device Parameters) and 0C (Notch Parameters) provide methods to determin
medium format and zone parameters. See 7.9.6, "Page 3 (Format Device Parameters)" on page 102, and
7.9.11, "Page 0C (Notch Parameters)" on page 110.

3.4 Performance Characteristics

A drive performance is characterized by the following parameters:
Command Overhead
Mechanical Positioning
Seek Time
Latency
Data Transfer Speed
Buffering Operation (Lookahead/Write cache)
Note: All the above parameters contribute to drive performance. There are other parameters that contribute
to the performance of the actual system. This specification tries to define the bare drive characteristics, not
the system throughput which will depend on the system and the application.
10
O E M Spec. of DDRS-3xxxx
Phys. Cyl.
0-695
696-1332
1333-2181
2182-3283
3284-4234
4235-6602
6603-8105
8106-8419
Sectors/Trk
264
250
242
231
220
198
176
165