Product comparison · 2 internal hard drives

Seagate Enterprise ST2000NM0045-RF internal hard drive vs Seagate Constellation ST91000642SS-RF internal hard drive

20specifications compared
13differ
7identical
18known for one product only

Key differences

The Seagate Enterprise ST2000NM0045-RF internal hard drive has 1 TB more HDD capacity than the Seagate Constellation ST91000642SS-RF internal hard drive (2 TB vs 1 TB). The Seagate Enterprise ST2000NM0045-RF internal hard drive has 1" more HDD size than the Seagate Constellation ST91000642SS-RF internal hard drive (3.5" vs 2.5"). The Seagate Enterprise ST2000NM0045-RF internal hard drive has 64 MB more storage drive buffer size than the Seagate Constellation ST91000642SS-RF internal hard drive (128 MB vs 64 MB). Operating voltage: 5 / 12 V on the Seagate Enterprise ST2000NM0045-RF internal hard drive, 5 V on the Seagate Constellation ST91000642SS-RF internal hard drive.

HDD capacity
- Enterprise ST2000NM0045-RF internal hard drive:2 TB
- Constellation ST91000642SS-RF internal hard drive:1 TB
HDD size
- Enterprise ST2000NM0045-RF internal hard drive:3.5"
- Constellation ST91000642SS-RF internal hard drive:2.5"
Storage drive buffer size
- Enterprise ST2000NM0045-RF internal hard drive:128 MB
- Constellation ST91000642SS-RF internal hard drive:64 MB
Mean time between failures (MTBF)
- Enterprise ST2000NM0045-RF internal hard drive:2000000 h
- Constellation ST91000642SS-RF internal hard drive:1400000 h
Power consumption (typical)
- Enterprise ST2000NM0045-RF internal hard drive:9.17 W
- Constellation ST91000642SS-RF internal hard drive:6.35 W
Operating voltage
- Enterprise ST2000NM0045-RF internal hard drive:5 / 12 V
- Constellation ST91000642SS-RF internal hard drive:5 V
Operating vibration
- Enterprise ST2000NM0045-RF internal hard drive:12.5 G
- Constellation ST91000642SS-RF internal hard drive:0.5 G
Non-operating vibration
- Enterprise ST2000NM0045-RF internal hard drive:4.9 G
- Constellation ST91000642SS-RF internal hard drive:3 G

Side by side

Differences highlightedShow differences only

Comparison of ST2000NM0045-RF, ST91000642SS-RF
38 specifications	A Seagate Enterprise ST2000NM0045-RF internal hard drive Model ST2000NM0045-RF View product	B Seagate Constellation ST91000642SS-RF internal hard drive Model ST91000642SS-RF View product
Features4 differ
HDD capacityDiffers	2 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 number of headsKnown for one	Unknown — not stated by the source	8
Read seek timeKnown for one	Unknown — not stated by the source	7.5 ms
Write seek timeKnown for one	Unknown — not stated by the source	8.5 ms
Average latency	4.16 ms	4.16 ms
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Refurbished	Yes	Yes
Mean time between failures (MTBF)Differs	2000000 h	1400000 h
HDD interface transfer rateKnown for one	12 Gbit/s	Unknown — not stated by the source
HDD sustained transfer rateKnown for one	226 MiB/s	Unknown — not stated by the source
Power2 differ
Power consumption (typical)Differs	9.17 W	6.35 W
Operating voltageDiffers	5 / 12 V	5 V
Start-up currentKnown for one	Unknown — not stated by the source	2 A
Power consumption (idle)Known for one	4.67 W	Unknown — not stated by the source
Operational conditions3 differ
Operating temperature (T-T)	5 - 60 °C	5 - 60 °C
Storage temperature (T-T)Known for one	Unknown — not stated by the source	-40 - 70 °C
Operating relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Storage relative humidity (H-H)Known for one	Unknown — not stated by the source	5 - 95%
Operating vibrationDiffers	12.5 G	0.5 G
Non-operating vibrationDiffers	4.9 G	3 G
Operating altitudeKnown for one	Unknown — not stated by the source	-60.96 - 3048 m
Non-operating altitudeKnown for one	Unknown — not stated by the source	-60.96 - 12192 m
Operating shock	70 G	70 G
Non-operating shockDiffers	300 G	400 G
Weight & dimensions4 differ
WidthDiffers	101.8 mm	69.8 mm
DepthDiffers	147 mm	100 mm
HeightDiffers	26.1 mm	15 mm
WeightDiffers	605 g	200 g
Other featuresidentical
Data transfer rateKnown for one	Unknown — not stated by the source	4.69 Gbit/s
InternalKnown for one	Unknown — not stated by the source	Yes
Plug and PlayKnown for one	Unknown — not stated by the source	Yes
Packaging dataidentical
Quantity per packKnown for one	1 pc(s)	Unknown — not stated by the source
Logistics dataidentical
Harmonized System (HS) codeKnown for one	84717050	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.

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