Product comparison · 2 internal hard drives

Seagate 146GB 3.5" SAS vs Seagate SV35.4 SATA 320-GB

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  • 17specifications compared
  • 14differ
  • 3identical
  • 20known for one product only

Key differences

  • HDD capacity
    • 146GB 3.5" SAS:146 GB
    • SV35.4 SATA 320-GB:320 GB
  • HDD speed
    • 146GB 3.5" SAS:15000 RPM
    • SV35.4 SATA 320-GB:7200 RPM
  • Interface
    • 146GB 3.5" SAS:SAS
    • SV35.4 SATA 320-GB:Serial ATA
  • Component for
    • 146GB 3.5" SAS:Server/workstation
    • SV35.4 SATA 320-GB:Surveillance system
  • HDD number of heads
    • 146GB 3.5" SAS:3
    • SV35.4 SATA 320-GB:2
  • Read seek time
    • 146GB 3.5" SAS:3.4 ms
    • SV35.4 SATA 320-GB:14 ms
  • Write seek time
    • 146GB 3.5" SAS:3.9 ms
    • SV35.4 SATA 320-GB:15 ms
  • Track to track seek time
    • 146GB 3.5" SAS:0.2 ms
    • SV35.4 SATA 320-GB:1 ms

Side by side

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Comparison of 146GB 3.5" SAS, SV35.4 SATA 320-GB
37 specifications
Features8 differ
HDD capacityDiffers146 GB320 GB
HDD speedDiffers15000 RPM7200 RPM
HDD sizeKnown for one3.5"Unknown — not stated by the source
InterfaceDiffersSASSerial ATA
TypeKnown for oneHDDUnknown — not stated by the source
Component forDiffersServer/workstationSurveillance system
Storage drive buffer size16 MB16 MB
HDD number of headsDiffers32
Read seek timeDiffers3.4 ms14 ms
Write seek timeDiffers3.9 ms15 ms
Track to track seek timeDiffers0.2 ms1 ms
Average latencyKnown for one2 msUnknown — not stated by the source
Mean time between failures (MTBF)Known for one1600000 hUnknown — not stated by the source
Bytes per sectorKnown for oneUnknown — not stated by the source512
Poweridentical
Operating voltageKnown for one5 / 12 VUnknown — not stated by the source
Operational conditions3 differ
Operating temperature (T-T)Differs5 - 55 °C0 - 75 °C
Storage temperature (T-T)-40 - 70 °C-40 - 70 °C
Operating vibrationKnown for one1 GsUnknown — not stated by the source
Non-operating vibrationKnown for one2 GsUnknown — not stated by the source
Operating shockDiffers60 G70 G
Non-operating shockDiffers250 G350 G
Operating relative humidity (H-H)Known for oneUnknown — not stated by the source5 - 90%
Storage relative humidity (H-H)Known for oneUnknown — not stated by the source5 - 95%
Operating altitudeKnown for oneUnknown — not stated by the source-60.96 - 3048 m
Non-operating altitudeKnown for oneUnknown — not stated by the source-60.96 - 12192 m
Weight & dimensions1 differ
WidthKnown for one101.6 mmUnknown — not stated by the source
DepthKnown for one146.1 mmUnknown — not stated by the source
HeightKnown for one25.4 mmUnknown — not stated by the source
WeightDiffers0.674 g380 g
Other features2 differ
HDD transfer rateDiffers1051 Mbit/s1201 Mbit/s
Fibre ChannelKnown for oneYesUnknown — not stated by the source
InternalYesYes
Sustained data rateDiffers171 MB/s90 MB/s
Dimensions (WxDxH)Known for oneUnknown — not stated by the source101.85 x 146.99 x 20.20 mm
Disks included quantityKnown for oneUnknown — not stated by the source1 pc(s)
Drive device, transfer rateKnown for oneUnknown — not stated by the source300 MB/s
Recording densityKnown for oneUnknown — not stated by the source1242 kbit/inch

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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