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Drive specifications
2.2
Formatted capacity
ST models
Formatted
capacity*
Guaranteed
sectors
Bytes per
logical sector
Guaranteed
sectors
Bytes per
logical sector
ST24000NM001H, and
ST24000NM002H
24TB
46,875,541,504
512
(Default)
5,859,442,688
4096
(see Section 2.2.1)
ST20000NM001H, and
ST20000NM002H
20TB
39,063,650,304
4,882,956,288
16TB
31,251,759,104
3,906,469,888
ST16000NM000H,
ST16000NM001H, and
ST16000NM002H
ST12000NM001H, and
ST12000NM002H
12TB
23,437,770,752
2,929,721,344
ST10000NM021H
10TB
19,532,873,728
2,441,609,216
*One GB equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary
depending on operating environment and formatting.
NOTE
LBA Counts for drive capacities greater than 8TB are calculated based upon the SFF-
8447 standard publication. ftp://ftp.seagate.com/sff/SFF-8447.PDF
2.2.1
Fast Format - logical sector size conversion
•
Drive supports either 512E or 4KN logical sector size formats
•
SET SECTOR CONFIGURATION EXT (B2h) command (ACS-4 Standard) quickly converts between 512 and 4096 byte logical
sector size formats
•
The selected sector size change occurs immediately upon command completion
•
Default shipping format is 512E
Table 3 SET SECTOR CONFIGURATION EXT command inputs
Field
Description
FEATURE
COMMAND CHECK field
COUNT
Bit Description
15 : 3 Reserved
2:0 SECTOR CONFIGURATION DESCRIPTOR INDEX field
LBA
Reserved
DEVICE
Bit Description
7 Obsolete
6 N/A
5 Obsolete
4 Transport Dependent
3:0 Reserved
COMMAND
7:0 B2h
•
COMMAND CHECK field value is taken from the DESCRIPTOR CHECK field in the descriptor specified by the SECTOR CON-
FIGURATION DESCRIPTOR INDEX field
Seagate Exos X24 SATA Product Manual, Rev. C
12