Western Digital Ultrastar DC HC310 - Table 2 Formatted Capacity

6
Western Digital Hard Disk Drive OEM Specification
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
6TB SATA Model
4TB SATA Model
Physical Layout
Label capacity
6TB
4TB
Bytes per sector
512e
4,096
512e, 512n
4,096
Number of heads
8
8
6
6
Number of disks
4
4
3
3
Logical Layout
1
Bytes per sector
512
4,096
512
4096
Number of sectors
11,721,045,168
1,465,130,646
7,814,037,168
976,754,646
Total logical data bytes
6,001,175,126,016
6,001,175,126,016
4,000,787,030,016
4,000,787,030,016
Table 2 Formatted Capacity
Notes:
1
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.