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Seagate Exos X20 20TB SATA 6Gb/s 256MB Cache (512e / 4Kn) Enterprise 3.5-inch Internal Hard Drive - ST20000NM007D

Seagate Exos X20 20TB SATA 6Gb/s 256MB Cache (512e / 4Kn) Enterprise 3.5-inch Internal Hard Drive - ST20000NM007D

Part Number: ST20000NM007D
Manufacturer: Seagate

Condition: Refurbished

Weight: 3.0 lbs

AvailabilityIn stock

Regular price $795.00
Regular price Sale price $795.00
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Seagate Exos X20 20TB SATA 6Gb/s Enterprise Hard Drive

The Seagate Exos X20 ST20000NM007D is a 20TB enterprise-class SATA 6Gb/s hard drive delivering high-capacity bulk storage for hyperscale data centers and enterprise environments. With up to 285 MB/s sustained transfer rate, 512e/4Kn sector format support, and a 2.5 million hour MTBF, it is engineered for continuous 24/7 operation in demanding storage infrastructure.

Key Features

  • 20TB enterprise capacity — maximum density for bulk storage deployments
  • SATA 6Gb/s interface for broad server and storage compatibility
  • Up to 285 MB/s sustained transfer rate
  • 512e and 4Kn sector format support
  • 2.5 million hour MTBF — enterprise-grade reliability
  • PowerChoice technology for energy efficiency
  • 7200RPM with 256MB cache

Product Specifications

  • Part Number: ST20000NM007D
  • Manufacturer: Seagate
  • OEM Status: Retail
  • Capacity: 20TB
  • Interface: SATA 6Gb/s
  • Form Factor: 3.5-inch
  • Spindle Speed: 7200RPM
  • Cache: 256MB
  • Sector Format: 512e / 4Kn

Storage Specifications

  • Recording Technology: CMR
  • Buffer Size: 256MB
  • Average Latency: 4.16ms

Performance Specifications

  • Max Sustained Transfer Rate: Up to 285 MB/s
  • MTBF: 2.5 million hours
  • AFR: 0.35%
  • Workload Rate: 550TB/year
  • Warranty: 5-year limited

Use Cases

  • Hyperscale data center bulk and cold storage
  • Enterprise NAS and object storage deployments
  • Cloud storage infrastructure requiring high-capacity SATA drives
  • Backup and archival storage tiers
  • High-density storage server builds

Compatibility

  • Compatible with SATA 6Gb/s and SATA 3Gb/s controllers (backward compatible)
  • Fits standard 3.5-inch LFF drive bays in servers and storage enclosures
  • Compatible with enterprise NAS and storage arrays supporting SATA LFF drives

Frequently Asked Questions

Is the Exos X20 suitable for NAS use?
Yes, the Exos X20 can be used in enterprise NAS environments. For consumer or SMB NAS, Seagate IronWolf or IronWolf Pro is more appropriate due to NAS-specific firmware optimizations.
What is the difference between Exos X20 SATA and SAS versions?
The SATA version (ST20000NM007D) uses a single-port SATA interface. SAS versions offer dual-port connectivity for high-availability storage arrays. Choose SAS for enterprise arrays requiring multipath I/O.
Does this drive use SMR or CMR recording?
The Exos X20 uses CMR (Conventional Magnetic Recording), which provides consistent write performance suitable for enterprise workloads — unlike SMR which can have variable write speeds.

The Seagate Exos X20 ST20000NM007D delivers 20TB of enterprise SATA storage with 285 MB/s sustained throughput, CMR recording, and 2.5 million hour MTBF — the ideal high-capacity SATA hard drive for hyperscale data centers and enterprise bulk storage deployments.

Frequently Asked Questions

Why do I see an incorrect image for this item?

Product images are meant for illustrative purposes alone, and you may not always see the original image.

What do you mean by term Refurbished?

Refurbished means a used computer part or device that has been cleaned, checked, and repaired to make sure it works properly again. Unlike regular second-hand items, refurbished products go through testing and fixing so they can perform like new.

How many days does it take to ship goods to customers?

All orders are processed within 1-2 business days. Orders placed on weekends or public holidays will be processed on the next business day. For more info visit shipping policy.

What is your return policy?

Our Return Policy comprises a 30-day warranty for Refurbished products. There will be a restocking fee applied when you return non-defective returns. For further details, kindly take a look at our Return Policy page.

Do you deliver my ordered items in their original retail box?

For Brand New items, you will receive them in their original retail box. For Refurbished items, you will receive them in a Brown Box or Bulk Packaging.

Do your printers come with ink cartridges?

Refurbished printers do not come with ink cartridges or toners.