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Seagate Constellation.2 ST9500620SS (5 years of local official warranty) 500GB 7200 RPM 64MB Cache SAS 6Gb/s 2.5" Internal Enterprise-class Hard Drive Bare Drive

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Product Description

The Constellation.2 drive, the most energy efficient enterprise drives on the market along with its high-capacity and enterprise reliability, provides a sustainable solution for your expanding data storage needs. Designed to meet and exceed expectations of your power envelope, the Constellation.2 drive allows you to come in under budget. Ideally suited for use in both server and networked storage solutions in space-constrained IT environments, the Constellation.2 drive allows you to design small and deliver BIG.



  • neweggROBUST PERFORMANCE WITH A MINIMAL FOOTPRINTThe Constellation.2 drive features 6Gb/s SAS with improved data integrity, scalability and fastest data access or SATA 6Gb/s for economical 7200-RPM performance. Industry’s first 2.5-inch 1TB capacity-optimized drive for dense, space-constrained data centers allows you to store twice as much data in the same footprint.
  • neweggENHANCED RELIABILITYThe Constellation.2 enterprise drive features a mean-time-between-failures (MTBF) rating of 1.4M hours and an unmatched annualized failure rate (AFR) of 0.62% to deliver the industry’s highest level of reliability for a 24×7 7200-RPM nearline drive.
  • neweggENERGY-SAVINGThe Constellation.2 drive operates at fewer than 6.4W on average—the lowest operating power in the industry—saving up to 41% over traditional 3.5-inch drives. It saves up to 54% more energy during slow or idle periods with the enhanced PowerChoice technology feature. Workload Management technology helps systems keep drives cool.
  • neweggRELIABLE PERFORMANCEBest-in-class rotational vibration tolerance ensures unrivaled performance in high spindle-density applications, and multi-drive firmware maximizes system availability.
  • neweggGOVERNMENT-GRADE SELF-ENCRYPTING DRIVE SECURITY OPTION AVAILABLETCG- compliant, Self-Encrypting Drive (SED) security option cuts IT drive retirement expenses while securely protecting data. (Not available in all models or countries. Requires TCG-compliant host or controller support.)


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    The Seagate® Enterprise Capacity 2.5 HDD (formerly Constellation.2™) is the only 2.5-inch enterprise-class hard drive delivering both 1TB capacities and enterprise reliability at the industry’s lowest power consumption for storage-hungry nearline applications. Self-Encrypting Drive (SED) and FIPS 140-2 Validated™ SED security options available to help you protect your data.

    • Maximizes data center footprint with up to 76TB per square foot
    • Energy efficient storage at under 3.9 watts (idle)
    • Highest nearline reliability with an MTBF of 1.4M hours
    • 6Gb/s performance in both SAS and SATA interfaces



    Enterprise Capacity 2.5 HDDs reduce per-gigabyte cooling and energy costs by packing high capacities into an SFF, low-power-consumption drive.

    Included Seagate® PowerChoice™ technology can further reduce energy costs by empowering IT organizations to tailor systems for optimal performance and power consumption. This results in power savings of up to 54% over traditional 3.5–inch drives, and  potentially operating at 1.1W when idle. PowerChoice is based on the T10-compliant power management standard. 


    Enterprise Capacity 2.5 HDDs can help you deploy additional enterprise storage without expanding your data center.

    With its 15mm z-height, the 1TB model is the first 2.5-inch hard drive capacity-optimized for dense, space-constrained data centers. This model can help you store twice as much data in the same footprint, supporting up to 76TB of storage per square foot. Also features for nearline storage:

    • Enterprise-class firmware and best-in-class rotational vibration tolerance maximize system availability and performance in multi-drive systems
    • Choose 6Gb/s SAS for improved data integrity, scalability over long distances and fastest data access
    • The SATA 6Gb/s interface is ideal for fast, economical nearline (Tier2) performance



    Enterprise Capacity 2.5 HDD Self-Encrypting Drives (SED) are TCG-compliant and can improve data-at-rest security and reduce drive retirement costs. The SEDs meet regulatory data security compliance requirements and are FIPS 140-2 Validated™ to protect Sensitive but Unclassified and Protected class data.1

    Moreover, Seagate Instant SecureErase technology renders all data on the SED unreadable in less than a second. Learn more about Seagate secure disk erase deployment options

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