Hitachi HDS723020BLA642 - Drive Characteristics; Default Logical Drive Parameters

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4 Drive characteristics
This section describes the characteristics of the drive.
4.1 Default logical drive parameters
The default of the logical drive parameters in Identify Device data is as shown below.
Description
1.5TB model
2TB model
Physical Layout
Label capacity
1.5TB
2TB
Bytes per Sector
512
512
Number of Heads
5 or 6
6
Number of Disks
3
3
Logical Layout
2
Number of Heads
16
16
Number of Sectors/ Track
63
63
Number of Cylinders
1
16,383
16,383
Number of Sectors
2,930,277,168
3,907,029,168
Total Logical Data Bytes
1,500,301,910,016
2,000,398,934,016
Table 2 Formatted capacity
Notes:
1
Number of cylinders: For drives with capacities greater an 8.45 GB the IDENTIFY DEVICE information word 01
limits the number of cylinders to 16,383 per the ATA specification.
2
Logical layout: Logical layout is an imaginary drive parameter (that is, the number of heads) which is used to
access the drive from the system interface. The Logical layout to Physical layout (that is, the actual Head and
Sectors) translation is done automatically in the drive. The default setting can be obtained by issuing an IDENTIFY
DEVICE command