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White 3.5 inch SATA hard drive, rectangular metal casing, label visible

Seagate

Seagate ST20000NM007D 20TB 7200RPM 3.5" SATA HDD

SKU CH-GT4C-PCWQY MPN ST20000NM007D

Stores 20 TB of data on a 7200 RPM 3.5-inch SATA hard drive with 256 MB cache

  • Massive 20TB capacity stores vast data archives
  • 7200 RPM spindle delivers rapid sequential throughput
  • 256 MB cache buffers heavy write workloads
  • 5 inch form factor fits standard drive bays
  • SATA 6Gbps interface connects to common controllers

20 TB enterprise hard drive

The Seagate EXOS X20 ST20000NM007D delivers 20 TB of storage on a 3.5 inch SATA hard drive spinning at 7200 RPM with a 256 MB cache. It is built for continuous operation in servers, NAS enclosures and bulk-archiving workstations.

Compatibility checklist

Verify that your system provides a free 3.5 inch drive bay, a SATA data cable and a SATA power connector from the power supply. The motherboard or controller must support SATA 6 Gbps for full interface speed.

Build integration

The drive slots into standard 3.5 inch trays and uses the same SATA cables as other hard drives, leaving PCIe lanes free for other expansion cards. Its 256 MB cache helps sustain throughput during heavy sequential workloads such as video ingest or backup jobs.

How it compares

Measured against everything we stock in Cable Locks & Laptop Extras, at today’s prices. Recalculated every night.

Price $664.99
Pricier than about 91% of the 8,808 comparable items (median $16.99).

Specifications

No published specifications for this item yet.

Questions about this item

Does the drive ship with any cables, brackets or mounting screws?

The OEM package contains only the 3.5" hard drive itself; SATA data and power cables plus any mounting hardware must be sourced separately.

What distinguishes the 20 TB EXOS X20 model from other capacities in the same line?

This model provides 20 TB of storage with a 256 MB cache and 7200 RPM spindle speed, the highest capacity in the EXOS X20 series.

How does the 7200 RPM spindle speed affect real-world throughput in a desktop or server?

The 7200 RPM rotation enables faster sequential access and lower latency than slower-spinning drives, benefiting workloads that stream large files continuously.

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