Product comparison · 2 internal hard drives

Origin Storage HDD 20TB 3.5in SATA Surveillance vs Seagate Constellation ST91000642SS-RF internal hard drive

10specifications compared
5differ
5identical
27known for one product only

Key differences

The Origin Storage HDD 20TB 3.5in SATA Surveillance has 19 TB more HDD capacity than the Seagate Constellation ST91000642SS-RF internal hard drive (20 TB vs 1 TB). The Origin Storage HDD 20TB 3.5in SATA Surveillance has 1" more HDD size than the Seagate Constellation ST91000642SS-RF internal hard drive (3.5" vs 2.5"). The Origin Storage HDD 20TB 3.5in SATA Surveillance has 192 MB more storage drive buffer size than the Seagate Constellation ST91000642SS-RF internal hard drive (256 MB vs 64 MB). Interface: Serial ATA on the Origin Storage HDD 20TB 3.5in SATA Surveillance, SAS on the Seagate Constellation ST91000642SS-RF internal hard drive. Operating temperature (T-T): 5 - 55 °C on the Origin Storage HDD 20TB 3.5in SATA Surveillance, 5 - 60 °C on the Seagate Constellation ST91000642SS-RF internal hard drive.

HDD capacity
- HDD 20TB 3.5in SATA Surveillance:20 TB
- Constellation ST91000642SS-RF internal hard drive:1 TB
HDD size
- HDD 20TB 3.5in SATA Surveillance:3.5"
- Constellation ST91000642SS-RF internal hard drive:2.5"
Interface
- HDD 20TB 3.5in SATA Surveillance:Serial ATA
- Constellation ST91000642SS-RF internal hard drive:SAS
Storage drive buffer size
- HDD 20TB 3.5in SATA Surveillance:256 MB
- Constellation ST91000642SS-RF internal hard drive:64 MB
Operating temperature (T-T)
- HDD 20TB 3.5in SATA Surveillance:5 - 55 °C
- Constellation ST91000642SS-RF internal hard drive:5 - 60 °C

Side by side

Differences highlightedShow differences only

Comparison of SA-20TB/SV, ST91000642SS-RF
37 specifications	A Origin Storage HDD 20TB 3.5in SATA Surveillance Model SA-20TB/SV View product	B Seagate Constellation ST91000642SS-RF internal hard drive Model ST91000642SS-RF View product
Features4 differ
HDD capacityDiffers	20 TB	1 TB
HDD speed	7200 RPM	7200 RPM
HDD sizeDiffers	3.5"	2.5"
InterfaceDiffers	Serial ATA	SAS
Type	HDD	HDD
Storage drive buffer sizeDiffers	256 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 latencyKnown for one	Unknown — not stated by the source	4.16 ms
Bytes per sectorKnown for one	Unknown — not stated by the source	512
RefurbishedKnown for one	Unknown — not stated by the source	Yes
Mean time between failures (MTBF)Known for one	Unknown — not stated by the source	1400000 h
Component forKnown for one	Surveillance system	Unknown — not stated by the source
Hot-swapKnown for one	No	Unknown — not stated by the source
Poweridentical
Power consumption (typical)Known for one	Unknown — not stated by the source	6.35 W
Operating voltageKnown for one	Unknown — not stated by the source	5 V
Start-up currentKnown for one	Unknown — not stated by the source	2 A
Operational conditions1 differ
Operating temperature (T-T)Differs	5 - 55 °C	5 - 60 °C
Storage temperature (T-T)	-40 - 70 °C	-40 - 70 °C
Operating relative humidity (H-H)	5 - 95%	5 - 95%
Storage relative humidity (H-H)	5 - 95%	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
Operating shockKnown for one	Unknown — not stated by the source	70 G
Non-operating shockKnown for one	Unknown — not stated by the source	400 G
Weight & dimensionsidentical
WidthKnown for one	Unknown — not stated by the source	69.8 mm
DepthKnown for one	Unknown — not stated by the source	100 mm
HeightKnown for one	Unknown — not stated by the source	15 mm
WeightKnown for one	Unknown — not stated by the source	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
Compliance certificatesKnown for one	RoHS	Unknown — not stated by the source
Warranty periodKnown for one	5 year(s)	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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