Product comparison · 2 internal hard drives

Seagate 6TB SAS vs Seagate Constellation ST91000641SS-30PK internal hard drive

Key differences

HDD capacity
- 6TB SAS:6 TB
- Constellation ST91000641SS-30PK internal hard drive:1 TB
HDD size
- 6TB SAS:3.5"
- Constellation ST91000641SS-30PK internal hard drive:2.5"
Storage drive buffer size
- 6TB SAS:128 MB
- Constellation ST91000641SS-30PK internal hard drive:64 MB
HDD interface transfer rate
- 6TB SAS:12 Gbit/s
- Constellation ST91000641SS-30PK internal hard drive:6 Gbit/s
Power consumption (typical)
- 6TB SAS:11.86 W
- Constellation ST91000641SS-30PK internal hard drive:6.4 W
Power consumption (idle)
- 6TB SAS:7.97 W
- Constellation ST91000641SS-30PK internal hard drive:3.85 W
Operating voltage
- 6TB SAS:5 / 12 V
- Constellation ST91000641SS-30PK internal hard drive:5 V
Non-operating vibration
- 6TB SAS:4.9 G
- Constellation ST91000641SS-30PK internal hard drive:3 G

Differences highlightedShow differences only

Comparison of 6TB SAS, ST91000641SS-30PK
27 specifications	A Seagate 6TB SAS View product	B Seagate Constellation ST91000641SS-30PK internal hard drive Model ST91000641SS-30PK View product
Features4 differ
HDD capacityDiffers	6 TB	1 TB
HDD speed	7200 RPM	7200 RPM
HDD sizeDiffers	3.5"	2.5"
Interface	SAS	SAS
Type	HDD	HDD
Storage drive buffer sizeDiffers	128 MB	64 MB
HDD interface transfer rateDiffers	12 Gbit/s	6 Gbit/s
Read seek timeKnown for one	Unknown — not stated by the source	8.5 ms
Write seek timeKnown for one	Unknown — not stated by the source	9.5 ms
Average latency	4.16 ms	4.16 ms
Bytes per sector	512	512
Mean time between failures (MTBF)	1400000 h	1400000 h
Power3 differ
Power consumption (typical)Differs	11.86 W	6.4 W
Power consumption (idle)Differs	7.97 W	3.85 W
Operating voltageDiffers	5 / 12 V	5 V
Power consumption (read)Known for one	11.86 W	Unknown — not stated by the source
Operational conditions2 differ
Operating temperature (T-T)	5 - 60 °C	5 - 60 °C
Operating vibrationKnown for one	Unknown — not stated by the source	0.5 G
Non-operating vibrationDiffers	4.9 G	3 G
Operating shock	70 G	70 G
Non-operating shockDiffers	300 G	400 G
Weight & dimensions4 differ
WidthDiffers	101.8 mm	70.1 mm
DepthDiffers	147 mm	100.5 mm
HeightDiffers	26.1 mm	15 mm
WeightDiffers	780 g	200 g
Packaging data1 differ
Quantity per packDiffers	20 pc(s)	30 pc(s)
Packaging contentidentical
Storage drive adapter includedKnown for one	No	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.