Seagate ST9250827AS Momentus 5400.4 SATA Product Manual - Page 13

Momentus 5400.4 SATA Product Manual, Rev. A

5

**During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and

power to operational levels

.

***Typical notebooks will pull power to the drive when entering S3 and S4; while in the S3 and S4 states, drive sleep and drive standby

modes will not contribute to battery power consumption.

2.2

Formatted capacity

*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment

and formatting.

2.2.1

LBA mode

When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to

n–1,

where

n

is

the number of guaranteed sectors as defined above

.

See Section 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48-

bit addressing support of drives with capacities over 137 Gbytes.

2.3

Default logical geometry

LBA mode

When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to

n–1,

where

n

is

the number of guaranteed sectors as defined above

.

Model

Formatted capacity*

Guaranteed sectors

Bytes per sector

ST9250827AS

250 Gbytes

488,397,168

512

ST9200827AS

200 Gbytes

390,721,968

512

ST9160827AS

160 Gbytes

312,581,808

512

ST9120817AS

120 Gbytes

234,441,648

512

Cylinders

Read/write heads

Sectors per track

16,383

16

63

Section	Page
1.0 Introduction	9
1.1 About the Serial ATA interface	10
2.0 Drive specifications	11
2.1 Specification summary table	11
2.2 Formatted capacity	13
2.2.1 LBA mode	13
2.3 Default logical geometry	13
2.4 Physical organization	14
2.5 Recording and interface technology	14
2.6 Physical characteristics	14
2.7 Seek time	15
2.8 Start/stop times	15
2.9 Power specifications	16
2.9.1 Power consumption	16
2.9.1.1 Typical current profile	17
2.9.2 Deferred spinup	17
2.9.3 Conducted noise	17
2.9.4 Voltage tolerance	17
2.9.5 Power-management modes	18
2.10 Environmental specifications	19
2.10.1 Ambient temperature	19
2.10.2 Temperature gradient	19
2.10.3 Humidity	19
2.10.3.1 Relative humidity	19
2.10.3.2 Wet bulb temperature	19
2.10.4 Altitude	19
2.10.5 Shock	20
2.10.5.1 Operating shock	20
2.10.5.2 Nonoperating shock	20
2.10.6 Vibration	20
2.10.6.1 Operating vibration	20
2.10.6.2 Nonoperating vibration	20
2.11 Acoustic emission	21
2.12 Electromagnetic immunity	21
2.13 Reliability	22
2.14 Agency certification	22
2.14.1 Safety certification	22
2.14.2 Electromagnetic compatibility	22
2.14.3 FCC verification	23
2.15 Environmental protection	24
2.15.1 European Union Restriction of Hazardous Substances (RoHS)	24
2.16 Corrosive environment	24
3.0 Configuring and mounting the drive	25
3.1 Handling and static-discharge precautions	25
3.2 Configuring the drive	26
3.3 Serial ATA cables and connectors	26
3.4 Drive mounting	27
4.0 Serial ATA (SATA) interface	29
4.1 Hot-Plug compatibility	29
4.2 Serial ATA device plug connector pin definitions	29
4.3 Supported ATA commands	31
4.3.1 Identify Device command	34
4.3.2 Set Features command	37
4.3.3 S.M.A.R.T. commands	38
5.0 Seagate Technology support services	39
A	41
B	41
C	41
D	41
E	41
F	41
G	41
H	42
I	42
K	42
L	42
M	42
N	42
O	42
P	42
Q	42
R	42
S	43
T	43
U	43
V	43

Seagate ST9250827AS Momentus 5400.4 SATA Product Manual - Page 13

Formatted capacity, Default logical geometry

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