Table 2 Formatted Capacity - Hitachi HDS723020BLA642 Specifications

Drive characteristics
4
This section describes the characteristics of the drive.
Default logical drive parameters
4.1
The default of the logical drive parameters in Identify Device data is as shown below.
Description
Physical Layout
Label capacity
Bytes per Sector
Number of Heads
Number of Disks
2
Logical Layout
Number of Heads
Number of Sectors/ Track
1
Number of Cylinders
Number of Sectors
Total Logical Data Bytes

Table 2 Formatted capacity

1
Notes:
Number of cylinders: For drives with capacities greater an 8.45 GB the IDENTIFY DEVICE information word
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
1.5TB model
1.5TB
512
5 or 6
3
16
63
16,383
2,930,277,168
1,500,301,910,016
18
2TB model
2TB
512
6
3
16
63
16,383
3,907,029,168
2,000,398,934,016
01