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  9. Seagate ST31500341AS - Barracuda 1.5 TB Hard Drive User manual

Seagate ST31500341AS - Barracuda 1.5 TB Hard Drive User manual

Selecting the right hard drive is best done when the decision is based on
application usage, technology requirements and drive design considerations.
The specification information here works in conjunction with the Drive
Selection Guide (MB538) to help you get a clear understanding of why a
particular hard drive works most effectively in the customer’s environment.
Additionally, our customers and partners need to understand that there is
more to a hard drive than just the initial acquisition cost. That’s only the
starting point of the total ownership cost model.
Choosing the right hard drive means that you are purchasing a product
that is optimized, tested, serviced and supported for your specific usage
environment. Consideration must be made for ongoing operational and
maintenance costs that include power usage and overall drive reliability
that impacts service costs like return processing, diagnostics, customer
downtime, goodwill, etc. The bottom line: Seagate is in the unique position
of having the breadth, experience and infrastructure derived from industry-
leading partnerships in all business segments.
If the application is digital video surveillance, recommending Seagate SV35
Series™drives offer an optimized solution providing high-capacity, low-power
optimization for both indoor and outdoor 24x7 digital video and metadata
usage. If a customer is looking for a desktop drive, the Seagate Barracuda®
products will exceed their expectations. This family of drives is unlike any
other in the market today; they have the highest benchmark performance
scores and the lowest power consumption. They are optimized for PC and
personal storage environments. If customers are looking for enterprise-
optimized solutions, considering total cost of ownership, enterprise-class
service and support, and Tier 2/nearline features, the answer is found in the
Seagate Constellation®and Seagate Barracuda ES product families.
For more information, see the Drive Selection Guide on our partner website
to make sure your customers are purchasing the best drives for their unique
environments.
7200-RPM Drive
Specification Comparison
Marketing Bulletin
Specifications Barracuda® 7200 Constellation™ Barracuda ES SV35 Series™
Primary Applications Optimized for PC and personal
external storage
Optimized for 2.5-inch business
server and external storage
arrays
Optimized for 3.5-inch business
server and external storage
arrays
Optimized for video surveillance
applications
Capacity (GB) 80, 160, 320, 500, 640, 750, 1000,
1500
1603, 500 250, 500, 750, 1000 250, 500, 1000
Spin Speed (RPM) 7200 7200 7200 7200
SATA Interface (Gb/s) 1.5/3.0 1.5/3.0 1.5/3.0 1.5/3.0
SAS Interface (Gb/s) — 3.0/6.0 3.0 —
Rotational vibration (RV) (radians/s/s) 5.5 narrow spectrum up to 300Hz 12.5 broad spectrum up to 1500Hz 12.5 broad spectrum up to 1500Hz 5.0 narrow spectrum up to 300Hz
Seek time, average read/write (ms) <8.5/<9.5 8.5/9.5 8.5/9.5 8.5/9.5
Cache (MB)12, 8, 16, 32 16, 32 16, 32 8, 16, 32
Nonrecoverable read errors per bits read 1 sector per 10E14 1 sector per 10E15 1 sector per 10E15 1 sector per 10E14
Power-on hours (POH) 2400–8x5 8760–24x7 8760–24x7 8760–24x7
Streaming capabilities — — — Up to 12 simultaneous HD streams4
POH usage profile 8x5–On as needed 24x7–Always on 24x7–Always on Up to 64 cameras 24x7–Always on
MTBF (hours) 700,000 >1 million >1 million >1 million
Power, average – idle (W)25.0 2.8 4.85 to 8.0 5.0 to 7.0
Acoustics, typical – idle (bels) 2.5 to 2.8 1.9 to 2.6 2.7 to 2.9 2.3 to 2.5
Shock, operating/nonoperating (Gs) 63/300 70/400 70/300 70/300
Ambient temperature, operating/
nonoperating (Gs)
0 to 60/–40 to 70 5 to 55/–40 to 70 5 to 55/–40 to 70 0 to 70/–40 to 70
Enterprise expert support •••
1 Cache size availability varies by capacity points and interface.
2 Power consumption varies by capacity points and interface.
3 160-GB capacity is SATA only.
4 Streaming capabilities for video surveillance is dependent on customer configuration.
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.
Barracuda, Constellation, PowerTrim, SoftSonic and SV35 Series 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. MB578.4-0905US, May 2009
7200-RPM Drive
Specification Comparison

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