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4.2 Data sheet
Table 3 Data sheet
Description
24TB Model
22TB Model
Max Data transfer rate (Mbps)
2,750
2,600
Max Interface transfer rate (MB/s)
600
600
Max Sustained transfer rate (MB/s) *1
298
291
Max Sustained transfer rate (MiB/s) *1
284
277
Memory size (MiB)
512
512
Rotational speed (RPM)
7,200
7200
Recording density- max (Kbpi)
2,320
2,215
Track density (Ktpi)
515
495
Areal density - max (Gbits/in2)
1,210
1,110
*1 The location of the max rate is at approximately 10% into the capacity of the HDD.
4.3 Worldwide Name Assignment
Table 4 World Wide Name Assignment
Description
WWN
Organizationally Unique Identifier (OUI)
000CCAh (for WESTERN DIGITAL)
SHBU Block Assignment
2F4h, 2F7h (Thailand)
4.4 Drive organization
4.4.1 Drive Format
Upon shipment from WESTERN DIGITAL manufacturing the drive satisfies the sector continuity in the physical
format by means of the defect flagging strategy described in Section 5 on page 25 to provide the maximum
performance to users.
4.4.2 Cylinder allocation
Physical cylinder is calculated from the starting data track of 0. It is not relevant to logical CHS. Depending on the
capacity some of the inner zone cylinders are not allocated.
Data cylinder
This cylinder contains the user data which can be sent and retrieved via read/write commands and a spare area for
reassigned data.
Spare cylinder
The spare cylinder is used by WESTERN DIGITAL manufacturing and includes data sent from a defect location.
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Hard Disk Drive Specification