Product comparison · 2 internal hard drives

Seagate 2TB SAS 3.5" vs Seagate Constellation ST32000647SS internal hard drive

Key differences

Interface
- 2TB SAS 3.5":SAS
- Constellation ST32000647SS internal hard drive:6-Gb/s SAS,-
Mean time between failures (MTBF)
- 2TB SAS 3.5":1200000 h
- Constellation ST32000647SS internal hard drive:12000000 h
Power consumption (typical)
- 2TB SAS 3.5":9.57 W
- Constellation ST32000647SS internal hard drive:6.2 W
Weight
- 2TB SAS 3.5":710 g
- Constellation ST32000647SS internal hard drive:655 g

Differences highlightedShow differences only

Comparison of 2TB SAS 3.5", ST32000647SS
25 specifications	A Seagate 2TB SAS 3.5"View product	B Seagate Constellation ST32000647SS internal hard drive Model ST32000647SS View product
Features2 differ
HDD capacity	2 TB	2 TB
HDD speed	7200 RPM	7200 RPM
HDD size	3.5"	3.5"
InterfaceDiffers	SAS	6-Gb/s SAS,-
Storage drive buffer size	64 MB	64 MB
Read seek time	8.5 ms	8.5 ms
Write seek time	9.5 ms	9.5 ms
Average latency	4.16 ms	4.16 ms
Mean time between failures (MTBF)Differs	1200000 h	12000000 h
Write speedKnown for one	Unknown — not stated by the source	155 MB/s
Power1 differ
Power consumption (typical)Differs	9.57 W	6.2 W
Power consumption (idle)Known for one	5.69 W	Unknown — not stated by the source
Operating voltage	5 / 12 V	5 / 12 V
Start-up currentKnown for one	2.11 A	Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)	5 - 60 °C	5 - 60 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating shock	70 G	70 G
Non-operating shock	300 G	300 G
Weight & dimensions1 differ
Width	101.8 mm	101.8 mm
Depth	147 mm	147 mm
Height	26.1 mm	26.1 mm
WeightDiffers	710 g	655 g
Other featuresidentical
Data transfer rate	6 Gbit/s	6 Gbit/s
InternalKnown for one	Yes	Unknown — not stated by the source
Security algorithmsKnown for one	FIPS 140-2	Unknown — not stated by the source

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.