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Seagate Constellation 1TB 2.5" SATA Enterprise Hard Drive

  • 2.5" SATA 6GB/S Hard Drive
  • 7200RPM
  • 64MB Cache
  • 5 Year Manufacturer Warranty

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QuickFind: 254420

Mfr part code: ST91000640NS

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    Seagate Constellation 1TB 2.5" SATA Enterprise Hard Drive Product Description

    Seagate Constellation.2 drives are the most energy efficient enterprise drives on the market. Designed for enterprise robustness, Constellation.2 offers reliable storage for high capacity servers and storage arrays in a minimal footprint.

    Technical Specifications


    Interface SATA 6Gb/s
    Features Native Command Queuing (NCQ), Perpendicular Magnetic Recording (PMR), PowerChoice, S.M.A.R.T.
    Device Type Hard drive - internal
    Capacity 1 TB
    Form Factor 2.5"
    Buffer Size 64 MB
    Bytes per Sector 512
    Width 7 cm
    Depth 10.1 cm
    Height 1.5 cm
    Weight 200 g

    Expansion & Connectivity

    Interfaces 1 x SATA 6 Gb/s - 7 pin Serial ATA
    Compatible Bays 1 x 2.5" - internal
    Compatible Bay 2.5"

    Manufacturer Warranty

    Service & Support Details Limited warranty - 5 years
    Service & Support Limited warranty - 5 years


    Drive Transfer Rate 600 MBps (external)
    Seek Time 8.5 ms (average)
    Track-to-Track Seek Time 0.7 ms
    Average Latency 4.16 ms
    Spindle Speed 7200 rpm


    MTBF 1,400,000 hours
    Non-Recoverable Errors 1 per 10^15


    Compatible with Windows 7 "Compatible with Windows 7" software and devices carry Microsoft’s assurance that these products have passed tests for compatibility and reliability with 32-bit and 64-bit Windows 7.

    Environmental Parameters

    Min Operating Temperature 5 °C
    Max Operating Temperature 60 °C
    Humidity Range Operating 5 - 95%
    Shock Tolerance 70 g @ 2ms (operating) / 400 g @ 2ms (non-operating)
    Vibration Tolerance 0.5 g @ 5-500 Hz (operating) / 3 g @ 5-500 Hz (non-operating)

    Customer Questions

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