Seagate Momentus 7200.3 320GB ST9320421AS-50TPK データシート
製品コード
ST9320421AS-50TPK
Momentus
®
7200.3
Industry-leading 7200-RPM performance meets
the industry’s lowest power consumption levels.
G-Force Protection
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. G-Force Protection, an optional drop
sensor, protects the Momentus 7200.3 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.
catastrophic damage to the hard drive
occurs when the head scrapes across the
surface of the disk, causing potential data
loss. G-Force Protection, an optional drop
sensor, protects the Momentus 7200.3 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.
Market Opportunity
Demand for drives for laptop computers
continues to grow exponentially. The laptop
transition is driven by technology, as the
performance gap between desktops and
laptop PCs continues to close, making it
possible to run the same applications on
a laptop that users would previously have
run on a desktop. Users no longer have to
sacrifice performance for mobility.
continues to grow exponentially. The laptop
transition is driven by technology, as the
performance gap between desktops and
laptop PCs continues to close, making it
possible to run the same applications on
a laptop that users would previously have
run on a desktop. Users no longer have to
sacrifice performance for mobility.
Seagate Global Customer Support
• 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
™
to help migrate
data from an older drive.
• Seagate also offers multi-lingual phone,
email and chat support.
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 © 2008 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. DS1649.3-0812US, December 2008
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. DS1649.3-0812US, December 2008
Specifications
320 GB
1
250 GB
1
160 GB
1
120 GB
1
80 GB
1
Model Number
ST9320421AS
ST9320421ASG
ST9320421ASG
ST9250421AS
ST9250421ASG
ST9250421ASG
ST9160411AS
ST9160411ASG
ST9160411ASG
ST9120411AS
ST9120411ASG
ST9120411ASG
ST980411AS
ST980411ASG
ST980411ASG
Interface Options
SATA 3Gb/s
with NCQ
with NCQ
SATA 3Gb/s
with NCQ
with NCQ
SATA 3Gb/s
with NCQ
with NCQ
SATA 3Gb/s
with NCQ
with NCQ
SATA 3Gb/s
with NCQ
with NCQ
Performance
Transfer Rate (MB/s)
Sustained Internal
Maximum External
Sustained Internal
Maximum External
80
300
300
80
300
300
80
300
300
80
300
300
80
300
300
Cache (MB)
16
16
16
16
16
Average Latency (ms)
4.17
4.17
4.17
4.17
4.17
Spindle Speed (RPM)
7200
7200
7200
7200
7200
Configuration/Organization
Disks/Heads
2/4
2/3
1/2
1/2
1/1
Bytes per Sector
512
512
512
512
512
Reliability/Data Integrity
G-Force Protection
™
Available
Available
Available
Available
Available
Head-Rest Method
QuietStep
™
Ramp Load
QuietStep
Ramp Load
Ramp Load
QuietStep
Ramp Load
Ramp Load
QuietStep
Ramp Load
Ramp Load
QuietStep
Ramp Load
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%
Mean Time Between Failures (MTBF, hours) 500,000
500,000
500,000
500,000
500,000
Power Management
Startup Current 5V (amps max)
1.0
1.0
1.0
1.0
1.0
Power Management (W)
Seek Avg
Read/Write Avg
Idle/Standby Avg
Seek Avg
Read/Write Avg
Idle/Standby Avg
2.3
2.1
0.75/0.21
2.3
2.1
0.75/0.21
2.3
2.1
0.75/0.21
2.3
2.1
0.75/0.21
2.1
0.75/0.21
2.3
2.1
0.75/0.21
2.1
0.75/0.21
Environmental
Temperature (°C)
Operating
Nonoperating
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
–40 to 70
0 to 60
–40 to 70
–40 to 70
Shock (Gs)
Operating: 2 msec
Nonoperating: 1 msec
Operating: 2 msec
Nonoperating: 1 msec
350
1000
350
1000
350
1000
350
1000
1000
350
1000
1000
Acoustics (bels—sound power)
Idle
Seek
Idle
Seek
2.3
2.5
2.3
2.5
2.3
2.5
2.3
2.5
2.5
2.3
2.5
2.5
Physical
Height (in/mm)
.374/9.5
.374/9.5
.374/9.5
.374/9.5
.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)
.243/110
.243/110
.243/110
.243/110
.243/110
1 One gigabyte, or GB, equals one billion bytes when referring to hard drive capacity.
www.seagate.com
1-800-SEAGATE (1-800-732-4283)
1-800-SEAGATE (1-800-732-4283)