Product comparison · 2 internal hard drives

Seagate 18.2GB 3.5" SCSI vs Seagate Barracuda 7200.9 250, Ultra ATA/100

9specifications compared
7differ
2identical
19known for one product only

Key differences

The Seagate Barracuda 7200.9 250, Ultra ATA/100 has 232 GB more HDD capacity than the Seagate 18.2GB 3.5" SCSI (250 GB vs 18 GB). The Seagate Barracuda 7200.9 250, Ultra ATA/100 has 12 MB more storage drive buffer size than the Seagate 18.2GB 3.5" SCSI (16 MB vs 4 MB). The Seagate 18.2GB 3.5" SCSI has 0.54 ms more average latency than the Seagate Barracuda 7200.9 250, Ultra ATA/100 (4.7 ms vs 4.16 ms). Interface: SCSI on the Seagate 18.2GB 3.5" SCSI, Ultra-ATA/100 on the Seagate Barracuda 7200.9 250, Ultra ATA/100.

HDD capacity
- 18.2GB 3.5" SCSI:18 GB
- Barracuda 7200.9 250, Ultra ATA/100:250 GB
Interface
- 18.2GB 3.5" SCSI:SCSI
- Barracuda 7200.9 250, Ultra ATA/100:Ultra-ATA/100
Storage drive buffer size
- 18.2GB 3.5" SCSI:4 MB
- Barracuda 7200.9 250, Ultra ATA/100:16 MB
Average latency
- 18.2GB 3.5" SCSI:4.7 ms
- Barracuda 7200.9 250, Ultra ATA/100:4.16 ms
Depth
- 18.2GB 3.5" SCSI:146 mm
- Barracuda 7200.9 250, Ultra ATA/100:146.9 mm
Height
- 18.2GB 3.5" SCSI:25.4 mm
- Barracuda 7200.9 250, Ultra ATA/100:26 mm
Weight
- 18.2GB 3.5" SCSI:680 g
- Barracuda 7200.9 250, Ultra ATA/100:635 g

Side by side

Differences highlightedShow differences only

Comparison of 18.2GB 3.5" SCSI, Barracuda 7200.9 250, Ultra ATA/100
28 specifications	A Seagate 18.2GB 3.5" SCSI View product	B Seagate Barracuda 7200.9 250, Ultra ATA/100 View product
Features4 differ
HDD capacityDiffers	18 GB	250 GB
HDD speed	7200 RPM	7200 RPM
HDD sizeKnown for one	3.5"	Unknown — not stated by the source
InterfaceDiffers	SCSI	Ultra-ATA/100
TypeKnown for one	HDD	Unknown — not stated by the source
Component forKnown for one	Server/workstation	Unknown — not stated by the source
Storage drive buffer sizeDiffers	4 MB	16 MB
Average latencyDiffers	4.7 ms	4.16 ms
HDD number of cylindersKnown for one	Unknown — not stated by the source	1024
HDD number of headsKnown for one	Unknown — not stated by the source	256
Poweridentical
Operating voltageKnown for one	5 / 12 V	Unknown — not stated by the source
Operational conditionsidentical
Operating temperature (T-T)Known for one	0 - 60 °C	Unknown — not stated by the source
Storage temperature (T-T)Known for one	-40 - 70 °C	Unknown — not stated by the source
Operating relative humidity (H-H)Known for one	5 - 90%	Unknown — not stated by the source
Storage relative humidity (H-H)Known for one	5 - 95%	Unknown — not stated by the source
Operating altitudeKnown for one	-60.96 - 3048 m	Unknown — not stated by the source
Non-operating altitudeKnown for one	-60.96 - 12192 m	Unknown — not stated by the source
Weight & dimensions3 differ
Width	101.6 mm	101.6 mm
DepthDiffers	146 mm	146.9 mm
HeightDiffers	25.4 mm	26 mm
WeightDiffers	680 g	635 g
Other featuresidentical
HDD transfer rateKnown for one	Unknown — not stated by the source	100 Mbit/s
Power requirementsKnown for one	Unknown — not stated by the source	2.6
Dimensions (WxDxH)Known for one	Unknown — not stated by the source	101.6 x 146.9 x 26.04 mm
InternalKnown for one	Unknown — not stated by the source	Yes
Drive devices burst data transfer rate (DMA)Known for one	Unknown — not stated by the source	2
Drive devices burst data transfer rate (PIO)Known for one	Unknown — not stated by the source	4
Drive devices burst data transfer rate (Ultra DMA)Known for one	Unknown — not stated by the source	5

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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