Product comparison · 2 internal hard drives

Seagate 2000GB 3.5" SAS vs Seagate Constellation ST31000425SS internal hard drive

14specifications compared
4differ
10identical
16known for one product only

Key differences

HDD capacity
- 2000GB 3.5" SAS:2 TB
- Constellation ST31000425SS internal hard drive:1 TB
Interface
- 2000GB 3.5" SAS:SAS
- Constellation ST31000425SS internal hard drive:Serial ATA II
Width
- 2000GB 3.5" SAS:101.8 mm
- Constellation ST31000425SS internal hard drive:101.6 mm
Weight
- 2000GB 3.5" SAS:710 g
- Constellation ST31000425SS internal hard drive:640 g

Side by side

Differences highlightedShow differences only

Comparison of 2000GB 3.5" SAS, ST31000425SS
30 specifications	A Seagate 2000GB 3.5" SAS View product	B Seagate Constellation ST31000425SS internal hard drive Model ST31000425SS View product
Features2 differ
HDD capacityDiffers	2 TB	1 TB
HDD speed	7200 RPM	7200 RPM
HDD size	3.5"	3.5"
InterfaceDiffers	SAS	Serial ATA II
TypeKnown for one	HDD	Unknown — not stated by the source
Component forKnown for one	Server/workstation	Unknown — not stated by the source
Storage drive buffer size	16 MB	16 MB
Read seek time	8.5 ms	8.5 ms
Write seek time	9.5 ms	9.5 ms
Start/stop cyclesKnown for one	300000	Unknown — not stated by the source
Mean time between failures (MTBF)Known for one	1200000 h	Unknown — not stated by the source
Average latencyKnown for one	Unknown — not stated by the source	4.16 ms
Poweridentical
Power consumption (idle)Known for one	7.26 W	Unknown — not stated by the source
Power consumption (read)Known for one	10.43 W	Unknown — not stated by the source
Power consumption (write)Known for one	10.15 W	Unknown — not stated by the source
Operating voltage	5 / 12 V	5 / 12 V
Power consumption (typical)Known for one	Unknown — not stated by the source	8 W
Operational conditionsidentical
Operating temperature (T-T)	5 - 60 °C	5 - 60 °C
Operating shock	70 G	70 G
Non-operating shockKnown for one	300 G	Unknown — not stated by the source
Weight & dimensions2 differ
WidthDiffers	101.8 mm	101.6 mm
Depth	147 mm	147 mm
Height	26.1 mm	26.1 mm
WeightDiffers	710 g	640 g
Other featuresidentical
Drive device, transfer rateKnown for one	Unknown — not stated by the source	150 MB/s
External power adapterKnown for one	Unknown — not stated by the source	No
InternalKnown for one	Unknown — not stated by the source	Yes
Mac compatibilityKnown for one	Unknown — not stated by the source	No
USB poweredKnown for one	Unknown — not stated by the source	No
USB requiredKnown for one	Unknown — not stated by the source	No

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.

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