Seagate 120GB 2.5" SATA II ST9120315AS Hoja De Datos

®

With fourth-generation perpendicular 
magnetic recording technology and 
capacities up to 500 GB, the Seagate

®

 

Momentus

®

 5400.6 drive offers the best 

combination of performance, capacity, 
mobility and durability in a laptop hard 
drive. The Momentus 5400.6 drive 
offers a fast SATA 3Gb/s interface plus 
an 8-MB cache, making the drive ideal 
for mainstream laptops, workstations, 
gaming laptops and personal external 
storage.

When a laptop is dropped, the most 
catastrophic damage to the hard drive 
occurs when the head scrapes across 
the surface of the disk, causing potential 
data loss. The G-Force Protection 
feature, an optional drop sensor, protects 
the Momentus 5400.6 drive against 
shock by sensing when the system is in 
a free-fall state, moving the heads off 
the platter and locking them in place—all 
within three-tenths of a second.

•

  Get presales and technical support at 

support.seagate.com.

•

  Visit our knowledge base for answers 

to common support questions.   

•

  Find documentation for current and 

legacy drives

•

  Utilize our online troubleshooting and 

diagnostic tools.

•

  Download DiscWizard

™

 help transfer 

data from an older drive.

•

  Seagate also offers multi-lingual 

phone, email and chat support.

•

  Seagate Design Service Centers help 

companies transform innovative ideas 
into viable products.

 

AMERICAS 

Seagate Technology LLC   920 Disc Drive, Scotts Valley, California 95066, United States, 831-438-6550

 

ASIA/PACIFIC 

Seagate Technology International Ltd.   7000 Ang Mo Kio Avenue 5, Singapore 569877, 65-6485-3888

 EUROPE, MIDDLE EAST AND AFRICA 

Seagate Technology SAS   130–136, rue de Silly, 92773, Boulogne-Billancourt Cedex, France 33 1-4186 10 00

Copyright © 2009 Seagate Technology LLC. All rights reserved. Printed in USA. Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. 
DiscWizard, G-Force Protection, Momentus and QuietStep are either trademarks or registered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States and/or other countries. All other trademarks 
or registered trademarks are the property of their respective owners. When referring to hard drive capacity, one gigabyte, or GB, equals one billion bytes and one terabyte, or TB, equals one trillion bytes. Your computer’s operating 
system may use a different standard of measurement and report a lower capacity. In addition, some of the listed capacity is used for formatting and other functions, and thus will not be available for data storage. Seagate reserves the 
right to change, without notice, product offerings or specifications. DS1663.2-0903US, March 2009

Model Number

ST9500325AS
ST9500325ASG

2

ST9320325AS
ST9320325ASG

2

ST9250315AS
ST9250315ASG

2

ST9160314AS
ST9160314ASG

2

ST9120315AS

Interface Options

SATA 3Gb/s NCQ

SATA 3Gb/s NCQ

SATA 3Gb/s NCQ

SATA 3Gb/s NCQ

SATA 3Gb/s NCQ

Transfer Rate
  Maximum Internal (Mb/s)
  Maximum External (MB/s)

1175
300

1175
300

1175
300

1175
300

1175
300

Cache (MB)

8

8

8

8

8

Average Latency (ms)

5.6

5.6

5.6

5.6

5.6

Spindle Speed (RPM)

5400

5400

5400

5400

5400

Areal Density (Gb/in

2

)

394

394

394

394

394

Disks/Heads

2/4

2/3

1/2

1/2

1/1

Bytes per Sector

512

512

512

512

512

G-Force Protection

™

Available

Available

Available

Available

—

Head-Rest Method

QuietStep

™

 

Ramp Load

QuietStep

™

 

Ramp Load

QuietStep 
Ramp Load

QuietStep 
Ramp Load

QuietStep 
Ramp Load

Load/Unload Cycles

>600,000

>600,000

>600,000

>600,000

>600,000

Nonrecoverable Read Errors per Bits Read

1 per 10E14

1 per 10E14

1 per 10E14

1 per 10E14

1 per 10E14

Annualized Failure Rate (AFR)

0.48%

0.48%

0.48%

0.48%

0.48%

Startup Current 5V (amps max)

1.0

1.0

1.0

1.0

1.0

Power Management (W)
  Seek
  Read/Write Avg
  Idle/Standby Avg

 
1.54
2.6/2.85
0.81/0.22

 
1.54
2.6/2.85
0.81/0.22

 
1.54
2.6/2.85
0.81/0.22

 
1.54
2.6/2.85
0.81/0.22

 
1.54
2.6/2.85
0.81/0.22

Temperature (°C)
  Operating
  Nonoperating

 
0 to 60
–40 to 70

 
0 to 60
–40 to 70

 
0 to 60
–40 to 70

 
0 to 60
–40 to 70

 
0 to 60
–40 to 70

Shock (Gs)
  Operating: 2 ms
  Nonoperating: 1 ms

 
350
1000

 
350
1000

 
350
1000

 
350
1000

 
350
1000

Acoustics (bels—sound power)
  Idle
  Seek

 
2.4
2.6

 
2.4
2.6

 
2.4
2.6

 
2.4
2.6

 
2.4
2.6

Height (in/mm)

0.374/9.5

0.374/9.5

0.374/9.5

0.374/9.5

0.374/9.5

Width (in/mm)

2.75/69.85

2.75/69.85

2.75/69.85

2.75/69.85

2.75/69.85

Depth (in/mm)

3.957/100.5

3.957/100.5

3.957/100.5

3.957/100.5

3.957/100.5

Weight (lb/kg)

0.218/98.8

0.218/98.8

0.206/93.5

0.206/93.5

0.206/93.5

1 One gigabyte, or GB, equals one billion bytes when referring to hard drive capacity.
2 Drive with G-Force Protection™ feature