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Product comparison · 2 internal hard drives

Seagate 400GB 3.5" SAS vs Seagate Barracuda ES.2 SATA 3.0-Gb/s 250-GB HD

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  • 17specifications compared
  • 12differ
  • 5identical
  • 16known for one product only

Key differences

  • HDD capacity
    • 400 GB
    • 250 GB
  • HDD speed
    • 10000 RPM
    • 7200 RPM
  • Interface
    • SAS
    • Serial ATA
  • Read seek time
    • 3.9 ms
    • 8.5 ms
  • Write seek time
    • 4.2 ms
    • 9.5 ms
  • Track to track seek time
    • 0.35 ms
    • 0.8 ms
  • Average latency
    • 2.98 ms
    • 4.16 ms
  • Operating temperature (T-T)
    • 0 - 60 °C
    • 5 - 55 °C

Side by side

Differences highlightedShow differences only
33 specifications
A

Seagate

400GB 3.5" SASView product
B

Seagate

Barracuda ES.2 SATA 3.0-Gb/s 250-GB HDView product
Features7 differ
HDD capacityDiffers400 GB250 GB
HDD speedDiffers10000 RPM7200 RPM
HDD size3.5"3.5"
InterfaceDiffersSASSerial ATA
TypeKnown for oneHDD
Component forKnown for oneServer/workstation
Storage drive buffer size16 MB16 MB
Read seek timeDiffers3.9 ms8.5 ms
Write seek timeDiffers4.2 ms9.5 ms
Track to track seek timeDiffers0.35 ms0.8 ms
Average latencyDiffers2.98 ms4.16 ms
Bytes per sectorKnown for one512
Mean time between failures (MTBF)Known for one1200000 h
Poweridentical
Operating voltage5 / 12 V5 / 12 V
Operational conditions1 differ
Operating temperature (T-T)Differs0 - 60 °C5 - 55 °C
Storage temperature (T-T)-40 - 70 °C-40 - 70 °C
Operating relative humidity (H-H)Known for one5 - 90%
Storage relative humidity (H-H)Known for one5 - 95%
Operating altitudeKnown for one-60.96 - 3048 m
Non-operating altitudeKnown for one-60.96 - 12192 m
Operating shockKnown for one63 G
Non-operating shockKnown for one300 G
Weight & dimensions3 differ
WidthDiffers101.8 mm101.6 mm
Depth147 mm147 mm
HeightDiffers26.1 mm20 mm
WeightDiffers771 g362 g
Other features1 differ
Windows operating systems supportedKnown for oneYes
Linux operating systems supportedKnown for oneYes
Sustained data rateDiffers97 MB/s105 MB/s
HDD transfer rateKnown for one1287 Mbit/s
Data transfer rateKnown for one3 Gbit/s
InternalKnown for oneYes
USB poweredKnown for oneNo

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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