Seagate ST9250827AS Momentus 5400.4 SATA Product Manual - Page 11

Momentus 5400.4 SATA Product Manual, Rev. A

3

2.0

Drive specifications

Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal

power. For convenience, the phrases

the drive

and

this drive

are used throughout this manual to indicate the

ST9250827AS, ST9200827AS, ST9160827AS, and ST9120817AS models.

2.1

Specification summary table

The specifications listed in this table are for quick reference. For details on specification measurement or defi-

nition, see the appropriate section of this manual.

Table 1:

Drive specifications

Drive specification

ST9250827AS

ST9200827AS

ST9160827AS

ST9120817AS

Formatted Gbytes

(512 bytes/sector)*

250

200

160

120

Guaranteed sectors

488,397,168

390,721,968

312,581,808

234,441,648

Bytes per sector

512

Physical read/write heads

4

4

3

2

Discs

2

2

2

1

Cache (Mbytes)

8

Recording density in BPI (bits/inch max)

1,180k

Track density TPI (tracks/inch max)

173k

Areal density (Gbits/inch

2

max)

204

Spindle speed (RPM)

5,400

Internal transfer rate (Mbits/sec max)

778

Sustained transfer rate (Mbytes/sec max)

58

I/O data transfer rate (Mbytes/sec max)

300

ATA data-transfer modes supported

SATA 1.0, Serial ATA Revision 2.5

PIO modes 0–4

Multiword DMA modes 0–2

Ultra DMA modes 0–6

Height (max)

9.5 +/- 0.2 mm (0.374 +/- .0078 inches)

Width (max)

69.85 +/- 0.25 mm (2.75 +/- 0.0098 inches)

Length (max)

100.20 +/- 0.25 mm (3.945 +/- 0.010 inches)

Weight (typical)

</=102 grams (0.23 lb)

97 grams (0.21 lb)

Average latency (msec)

5.6

Power-on to ready (sec typical)

<3.0

Standby to ready (sec typical)

<2.0

Track-to-track seek time (msec typical)

<2.0 (read),

<2.5 (write)

Average seek, read (msec typical)

<12.0

Average seek, write (msec typical)

<14.0

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 11

Drive specifications - momentus 5400 4

Page 11 highlights