Seagate ST9120822A Momentus 5400.3 PATA Product Manual - Page 9

Momentus 5400.3 PATA Product Manual, Rev. C

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

ST9160821A, ST9120822A, ST9100828A, ST980815A, ST960815A, and ST940815A model drives.

2.1

Specification summary

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

definition, see the appropriate section of this manual.

Table 1:

Specifications for 160 and 120 Gbyte models

Drive specification

ST9160821A

ST9120822A

Formatted Gbytes (512 bytes/sector)*

160

120

Guaranteed sectors

312,581,808

234,441,648

Bytes per sector

512

Physical read/write heads

4

3

Discs

2

Cache (Mbytes)

8

Recording density, BPI (bits/inch typical)

835k

Track density, TPI (tracks/inch typical)

150k

Areal density (Gbits/inch

2

max)

132

Spindle speed (RPM)

5,400

Internal data transfer rate (Mbits/sec max)

352

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

100

ATA data-transfer modes supported

PIO modes 0–4

Multiword DMA modes 0–2

Ultra DMA modes 0–5

Height

9.5 +/-0.2 mm (0.374 +/-.008 inches)

Width

69.85 +/-0.25 mm (2.750 +/-0.010 inches)

Length

100.50 +/-0.25 mm (3.957 +/-0.010 inches)

Weight (typical)

102 grams (0.22 lb)

Average latency (msec)

5.6

Power-on to ready (sec typical)

3.0

Standby to ready (sec typical)

3.0

Track-to-track seek time (msec typical)

1.0 (read), 1.5 (write)

Average random seek , write (msec typical)

13.0

Average random seek, read (msec typical)

11.0

Average random seek, (msec typical)

12.5

Full-stroke seek (msec)

22 (typical); 24 (max)

Startup current 5V (typical)

1.0 amps

Section	Page
1.0 Introduction	7
2.0 Drive specifications	9
2.1 Specification summary	9
2.2 Formatted capacity	15
2.3 Default logical geometry	15
2.4 Physical organization	15
2.5 Recording and interface technology	16
2.6 Physical characteristics	16
2.7 Seek time	17
2.8 Time to ready	17
2.9 Power specifications	18
2.9.1 Power consumption	18
2.9.1.1 Typical current profile	19
2.9.2 Conducted noise	19
2.9.3 Voltage tolerance	19
2.9.4 Power-management modes	20
2.10 Environmental specifications	21
2.10.1 Ambient temperature	21
2.10.2 Temperature gradient	21
2.10.3 Humidity	21
2.10.3.1 Relative humidity	21
2.10.3.2 Wet bulb temperature	21
2.10.4 Altitude	21
2.10.5 Shock	22
2.10.5.1 Operating shock	22
2.10.5.2 Nonoperating shock	22
2.10.6 Vibration	22
2.10.6.1 Operating vibration	22
2.10.6.2 Nonoperating vibration	22
2.11 Acoustics	23
2.12 Electromagnetic immunity	23
2.13 Reliability	24
2.14 Agency certification	24
2.14.1 Safety certification	24
2.14.2 Electromagnetic compatibility	24
2.14.3 FCC verification	25
2.15 Environmental protection	26
2.15.1 European Union Restriction of Hazardous Substances (RoHS)	26
2.16 Corrosive environment	26
3.0 Configuring and mounting the drive	27
3.1 Handling and static discharge precautions	27
3.2 Jumper settings	28
3.2.1 Master/slave configuration	28
3.2.2 Cable-select option	28
3.3 Drive mounting	29
4.0 ATA interface	31
4.1 ATA interface signals and connector pins	31
4.1.1 Supported ATA commands	32
4.1.2 Identify Device command	35
4.1.3 Set Features command	38
5.0 Compatibility summary	39
5.1 Installation considerations	39
5.2 BIOS versions tested	41
5.3 Operating system versions tested	42
5.4 Compatibility test configurations	42
5.5 Software utilities	42
5.6 Other certification	42

Seagate ST9120822A Momentus 5400.3 PATA Product Manual - Page 9

Drive specifications - height

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