Product comparison · 2 internal hard drives

Seagate Enterprise ST2000NM0125-RF internal hard drive vs Seagate Constellation ST91000642SS-RF internal hard drive

18specifications compared
12differ
6identical
22known for one product only

Key differences

The Seagate Enterprise ST2000NM0125-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 ST2000NM0125-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 ST2000NM0125-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). Interface: Serial ATA III on the Seagate Enterprise ST2000NM0125-RF internal hard drive, SAS on the Seagate Constellation ST91000642SS-RF internal hard drive. Operating voltage: 5 / 12 V on the Seagate Enterprise ST2000NM0125-RF internal hard drive, 5 V on the Seagate Constellation ST91000642SS-RF internal hard drive.

HDD capacity
- Enterprise ST2000NM0125-RF internal hard drive:2 TB
- Constellation ST91000642SS-RF internal hard drive:1 TB
HDD size
- Enterprise ST2000NM0125-RF internal hard drive:3.5"
- Constellation ST91000642SS-RF internal hard drive:2.5"
Interface
- Enterprise ST2000NM0125-RF internal hard drive:Serial ATA III
- Constellation ST91000642SS-RF internal hard drive:SAS
Storage drive buffer size
- Enterprise ST2000NM0125-RF internal hard drive:128 MB
- Constellation ST91000642SS-RF internal hard drive:64 MB
Mean time between failures (MTBF)
- Enterprise ST2000NM0125-RF internal hard drive:2000000 h
- Constellation ST91000642SS-RF internal hard drive:1400000 h
Power consumption (typical)
- Enterprise ST2000NM0125-RF internal hard drive:5.9 W
- Constellation ST91000642SS-RF internal hard drive:6.35 W
Operating voltage
- Enterprise ST2000NM0125-RF internal hard drive:5 / 12 V
- Constellation ST91000642SS-RF internal hard drive:5 V
Non-operating shock
- Enterprise ST2000NM0125-RF internal hard drive:300 G
- Constellation ST91000642SS-RF internal hard drive:400 G

Side by side

Differences highlightedShow differences only

Comparison of ST2000NM0125-RF, ST91000642SS-RF
40 specifications	A Seagate Enterprise ST2000NM0125-RF internal hard drive Model ST2000NM0125-RF View product	B Seagate Constellation ST91000642SS-RF internal hard drive Model ST91000642SS-RF View product
Features5 differ
HDD capacityDiffers	2 TB	1 TB
HDD sizeDiffers	3.5"	2.5"
InterfaceDiffers	Serial ATA III	SAS
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
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Mean time between failures (MTBF)Differs	2000000 h	1400000 h
Component forKnown for one	NAS	Unknown — not stated by the source
HDD interface transfer rateKnown for one	6 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	5.9 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	4.25 W	Unknown — not stated by the source
Operational conditions1 differ
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 vibrationKnown for one	Unknown — not stated by the source	0.5 G
Non-operating vibrationKnown for one	Unknown — not stated by the source	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
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	610 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 contentidentical
Storage drive adapter includedKnown for one	No	Unknown — not stated by the source
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.

More internal hard drive comparisons

All internal hard drive comparisons