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Silver 3.5 inch internal hard drive with SATA connectors and label showing 14TB capacity

Western Digital

Western Digital WD140EFFX 14TB 5400 RPM 512MB Cache 3.5" SATA internal hard drive

SKU CH-6HYV-E5Y4V MPN WD140EFFX

14 TB 3.5-inch SATA drive with 5400 RPM, 512 MB cache and 180 TB/yr workload rating for NAS enclosures up to eight bays

  • InterfaceSATA 6.0Gb/s
  • Capacity14TB
  • NAND Flash Memory TypeHard Drive
  • RPM5400 RPM
  • Cache512MB
  • FeaturesAvailable in capacities ranging from 1-14TB with support for

Capacity 14TB

Voir les 4 autres configurations
  • 14TB capacity for large NAS storage
  • 180TB yearly workload rating for heavy use
  • CMR technology with 512MB cache for consistent writes
  • NASware firmware ensures 8-bay compatibility
  • 5400RPM SATA 6.0Gb/s interface for 24x7 operation

14TB NAS Hard Drive for Small Business

The WD Red Plus WD140EFFX is a 14TB 3.5-inch internal hard drive built for network-attached storage. It spins at 5400 RPM with a 512MB cache and connects via a SATA 6.0Gb/s interface. The drive is designed for continuous 24x7 operation in small or medium business NAS enclosures.

CMR Technology and NASware Firmware

Conventional magnetic recording provides consistent write performance across the full 14TB capacity. NASware firmware optimises drive behaviour for multi-bay NAS systems, improving compatibility and reducing errors during rebuilds or heavy concurrent access. The drive supports up to eight drive bays and a workload rate of 180 TB per year.

Suited for Multi-Bay NAS Builds.

This drive fits NAS appliances that need high-capacity, always-on storage for backups, media libraries or shared files. It is not intended for use as a primary operating-system drive in a desktop PC, nor for workloads exceeding the 180 TB/yr rating. Builders needing faster random access or a smaller form factor should consider other storage types.

Points forts

  • 14TB capacity for large NAS storage
  • 180TB yearly workload rating for heavy use
  • CMR technology with 512MB cache for consistent writes
  • NASware firmware ensures 8-bay compatibility
  • 5400RPM SATA 6.0Gb/s interface for 24x7 operation

Caractéristiques

BrandWD
SeriesRed Plus
ModelWD140EFFX
InterfaceSATA 6.0Gb/s
Capacity14TB
NAND Flash Memory TypeHard Drive
RPM5400 RPM
Cache512MB
FeaturesAvailable in capacities ranging from 1-14TB with support for up to 8 bays
Supports up to 180 TB/yr workload rate
NASware firmware for compatibility
Small or medium business NAS systems in a 24x7 environment
UsageFor NAS systems
Form Factor3.5"
Height (maximum)26.10mm
Width (maximum)101.60mm
Length (maximum)147.00mm
Poids d’expédition0.80 kg
Dimensions du colis229 × 155 × 81 mm

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Questions sur cet article

Will the 512MB cache need any firmware updates or replacement over the 180 TB/yr workload rating?

The 512MB cache is a fixed hardware buffer on the WD140EFFX and does not require firmware updates or replacement; the drive is rated for 180 TB per year under the 24x7 NAS workload spec.

What limit appears first during sustained writes — the 5400 RPM spindle speed or the SATA 6.0Gb/s interface?

The 5400 RPM spindle speed sets the sustained throughput ceiling; the SATA 6.0Gb/s link on the WD140EFFX provides more bandwidth than the mechanical media can deliver.

How much noise and heat does the 3.5" 14TB helium-sealed drive produce in a 24x7 NAS?

The WD140EFFX is built for 24x7 operation in up to 8-bay NAS enclosures; its helium-filled design keeps acoustic and thermal output within the limits expected for a 5400 RPM class drive.

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