Seagate Exos X20 20TB Storage

Seagate Exos X20 20TB

Brand
Seagate
Model
Exos X20 20TB

Seagate Exos X20 20TB enterprise 7200RPM SATA 3.5-inch HDD (285MB/s), launched Dec 2021, built for dense 24/7 mass storage.

Storage performance rankTop 68% of storage drives
TierWorkstation?GixCore tierWhat a part was built to do — not what it costs.EntryBudgetMainstreamHigh endEnthusiastFlagshipWorkstationWorkstation parts sit outside that ladder — built for sustained professional workloads rather than a price-for-performance rung. A part can be cheap because it is an ageing flagship, or because it is a current entry-level model. The tier tells you which.
ReleasedDec 2021
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Capacity20 TB
TypeHDD
InterfaceSATA
Read speed285 MB/s
Write speed285 MB/s
Form factor3.5"
GixCore Editorial

Product overview

Released December 3, 2021, the Exos X20 20TB is Seagate’s Exos X20‑series enterprise HDD. It’s a 3.5-inch, helium‑sealed, CMR disk with a SATA 6 Gb/s interface, 7200 RPM spindle speed, 256 MB cache, and sustained transfers around 285 MB/s.

Positioned in the workstation tier for storage, it exists to offer dense, 24/7 bulk capacity at low cost per terabyte. It’s well suited to mass storage or a very large game library where sequential reads dominate—ideally paired with an SSD for OS and apps. Notable: it carries a 2.5M‑hour MTBF and a 5‑year limited warranty.

Best for
  • mass storage
  • game library
Official product specifications

Specifications

At a glance iEach dot represents a catalog model. Farther right means a higher measured value, not necessarily a better fit.Measured against the storage drives catalog
Current modelCatalog models
Capacity20 TB
Higher than 96% of storage drives
Read speed285 MB/s
Higher than 37% of storage drives
Write speed285 MB/s
Higher than 0% of storage drives
Capacity
20 TB
Type
HDD
Read speed
285 MB/s
Write speed
285 MB/s
Form factor
3.5"
Hardware Interface
SATA III 6 Gb/s
Data Transfer Rate
6000 Mb/s
Interface
SATA
Tdp
8 W
Pairing fit

Compatible Motherboards

Compatible options ranked for this part's performance class.