Product comparison · 2 internal hard drives

Seagate Barracuda ES.2 1000GB 20pk vs Seagate SV35.3 250 GB SATA 3Gb/s 20pk

Key differences

HDD capacity
- Barracuda ES.2 1000GB 20pk:1 TB
- SV35.3 250 GB SATA 3Gb/s 20pk:250 GB
Interface
- Barracuda ES.2 1000GB 20pk:SAS
- SV35.3 250 GB SATA 3Gb/s 20pk:Serial ATA
Storage drive buffer size
- Barracuda ES.2 1000GB 20pk:16 MB
- SV35.3 250 GB SATA 3Gb/s 20pk:8 MB
Read seek time
- Barracuda ES.2 1000GB 20pk:8.5 ms
- SV35.3 250 GB SATA 3Gb/s 20pk:14 ms
Write seek time
- Barracuda ES.2 1000GB 20pk:9.5 ms
- SV35.3 250 GB SATA 3Gb/s 20pk:15 ms
Height
- Barracuda ES.2 1000GB 20pk:26.1 mm
- SV35.3 250 GB SATA 3Gb/s 20pk:20.2 mm
Weight
- Barracuda ES.2 1000GB 20pk:530 g
- SV35.3 250 GB SATA 3Gb/s 20pk:382 g

Differences highlightedShow differences only

Comparison of Barracuda ES.2 1000GB 20pk, SV35.3 250 GB SATA 3Gb/s 20pk
20 specifications	A Seagate Barracuda ES.2 1000GB 20pk View product	B Seagate SV35.3 250 GB SATA 3Gb/s 20pk View product
Features5 differ
HDD capacityDiffers	1 TB	250 GB
HDD speed	7200 RPM	7200 RPM
HDD sizeKnown for one	Unknown — not stated by the source	3.5"
InterfaceDiffers	SAS	Serial ATA
Component forKnown for one	Unknown — not stated by the source	Surveillance system
Storage drive buffer sizeDiffers	16 MB	8 MB
Read seek timeDiffers	8.5 ms	14 ms
Write seek timeDiffers	9.5 ms	15 ms
Bytes per sectorKnown for one	Unknown — not stated by the source	512
Average latencyKnown for one	4.16 ms	Unknown — not stated by the source
Mean time between failures (MTBF)Known for one	1200000 h	Unknown — not stated by the source
Poweridentical
Operating voltageKnown for one	Unknown — not stated by the source	5 / 12 V
Start-up currentKnown for one	3 A	Unknown — not stated by the source
Weight & dimensions2 differ
Width	101.6 mm	101.6 mm
Depth	147 mm	147 mm
HeightDiffers	26.1 mm	20.2 mm
WeightDiffers	530 g	382 g
Other featuresidentical
Data transfer rateKnown for one	Unknown — not stated by the source	3 Gbit/s
Internal	Yes	Yes
Acoustic pressure emissionsKnown for one	0.27 dB	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.