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Silver rectangular 3.5 inch hard drive with silver label

Seagate

Seagate ST20000NM007D Exos X20 20 TB 7.2K SATA 3.5" 4Kn

SKU CH-DJE3-61339

High-capacity 20 TB SATA hard drive built for 24×7 NAS workloads in a 3.5-inch form factor

  • InterfaceSATA 6.0Gb/s
  • Capacity20 TB
  • Form Factor3.5"
  • Massive 20 TB capacity stores extensive data libraries
  • 2K RPM spindle delivers responsive throughput
  • SATA 6.0 Gb/s interface ensures broad host compatibility
  • 4Kn sector format optimises storage efficiency
  • Engineered for 24×7 operation in multi-bay NAS

Capacity and interface

This 20 TB hard drive uses a SATA 6.0 Gb/s interface in a 3.5 inch form factor. It spins at 7.2K rpm and uses 4Kn sector technology. The drive is built for continuous 24x7 operation in multi-bay NAS enclosures.

Suited for high-capacity NAS, not for laptops

The 3.5 inch size and 7.2K spindle speed make this drive appropriate for desktop NAS chassis with 1 to 8 bays. It is not suitable for laptop drive bays or for systems that require a 2.5 inch form factor. Buyers needing a portable or mobile-optimised drive should look elsewhere.

4Kn sector format requirement

The drive presents 4 KB native sectors to the host. The controller, operating system and any RAID layer must support 4Kn addressing. Without that support the drive will not be recognised or will report incorrect capacity.

Points forts

  • Massive 20 TB capacity stores extensive data libraries
  • 2K RPM spindle delivers responsive throughput
  • SATA 6.0 Gb/s interface ensures broad host compatibility
  • 4Kn sector format optimises storage efficiency
  • Engineered for 24×7 operation in multi-bay NAS

Caractéristiques

BrandSeagate
Part NumberST20000NM007D
InterfaceSATA 6.0Gb/s
Capacity20 TB
Form Factor3.5"

Questions sur cet article

What does the SATA 6.0 Gb/s interface cap in practice?

The SATA 6.0 Gb/s interface limits the drive to a maximum theoretical throughput of 6.0 Gb/s, which is the standard ceiling for this connection type.

What physical space is required to fit this 3.5" drive?

The drive requires a standard 3.5-inch drive bay and the matching SATA data and power connectors to install.

How is the drive installed and what step is often missed?

Mount the drive in a 3.5-inch bay, attach both SATA data and power cables, then ensure the operating system supports 4Kn native sectors before partitioning.

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