Brands Guides About
Western Digital WD140EFFX 14TB Red Plus NAS Hard Drive — main product image
Western Digital WD140EFFX 14TB Red Plus NAS Hard Drive
Western Digital WD140EFFX 14TB Red Plus NAS Hard Drive
Western Digital WD140EFFX 14TB Red Plus NAS Hard Drive
Western Digital WD140EFFX 14TB Red Plus NAS Hard Drive
Western Digital WD140EFFX 14TB Red Plus NAS Hard Drive
Western Digital WD140EFFX 14TB Red Plus NAS Hard Drive
Western Digital

Western Digital WD140EFFX 14TB Red Plus NAS Hard Drive

★★★★★4.6 (12049 reviews)

A 14TB CMR NAS drive built for always-on small business storage with 512MB cache and a 180TB/year workload rating.

$759.45*
✓ In Stock on Amazon.com
View on Amazon

*Price sourced from Amazon.com. Last updated:Jun 04, 2026.Price and availability are subject to change.

Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

The Western Digital WD Red Plus WD140EFFX is a 14TB internal hard drive purpose-built for network-attached storage systems in small to medium business and SOHO environments. At its core, it uses Conventional Magnetic Recording (CMR) rather than Shingled Magnetic Recording (SMR), a distinction that matters during sustained write operations and RAID array rebuilds where CMR drives maintain more consistent performance. With a 512MB cache and SATA 6 Gb/s interface, the drive handles sequential data transfers efficiently, while the 5400 RPM spindle speed keeps power consumption and noise levels relatively low — practical benefits for drives that run around the clock.

Western Digital's NASware firmware tunes the drive specifically for NAS enclosures, improving compatibility with popular multi-bay systems and reducing vibration-related issues when multiple drives operate side by side. The WD140EFFX supports up to 8-bay configurations and carries a 180 TB/year workload rating, which covers the sustained read/write demands of file serving, media streaming, and scheduled backups. A 3-year limited warranty backs the drive, and the 3.5-inch form factor fits standard desktop NAS bays without adapters.

Key Features

Available in capacities ranging from 1-14TB with support for up to 8 bays

5400RPM performance class

Supports up to 180 TB/yr workload rate*| * Workload Rate is defined as the amount of user data transferred to or from the hard drive. Workload Rate is annualized (TB transferred ✕ (8760 / recorded power-on hours))

NASware firmware for compatibility

Small or medium business NAS systems in a 24x7 environment

3-year limited warranty

This model uses CMR technology and is being renamed “WD Red Plus” to distinguish it from the current “WD Red” product, which uses SMR technology

During this transition period, WD Red Plus devices may be delivered with a ”WD Red” label, but rest assured the device you are receiving will be the CMR-version of WD Red and can be confirmed by the model number

Specifications

Capacity
14TB
Recording Technology
CMR (Conventional Magnetic Recording)
Spindle Speed
5400 RPM
Interface
SATA 6 Gb/s
Cache
512 MB
Form Factor
3.5 inch
Workload Rate
Up to 180 TB/year
NAS Bay Support
Up to 8 bays
Firmware
NASware
Warranty
3-year limited

Similar Products

Other products from the same family that visitors often consider:

Western Digital WD141KFGX Red Pro 14TB NAS Hard DriveCurrently Unavailable

Western Digital WD141KFGX Red Pro 14TB NAS Hard Drive

Check on Amazon →
Western Digital WD Red Pro 14TB NAS Hard Drive Renewed✓ Available

Western Digital WD Red Pro 14TB NAS Hard Drive Renewed

$438.70
View on Amazon →
Western Digital Easystore 14TB External Hard Drive✓ Available

Western Digital Easystore 14TB External Hard Drive

$548.95
View on Amazon →
Western Digital WD Red Plus 6TB NAS Hard Drive✓ Available

Western Digital WD Red Plus 6TB NAS Hard Drive

$109.99
View on Amazon →
Western Digital WD101EFBX Red Plus - 10TB NAS Hard DriveCurrently Unavailable

Western Digital WD101EFBX Red Plus - 10TB NAS Hard Drive

Check on Amazon →

Pros & Cons

👍 Pros

  • 14TB capacity provides substantial storage in a single 3.5-inch bay, reducing the number of drives needed.
  • CMR recording technology is better suited for RAID rebuilds and sustained write operations than SMR alternatives.
  • 512MB cache helps maintain performance during sequential read and write tasks.
  • NASware firmware is optimized for compatibility with popular NAS enclosures and RAID configurations.
  • 180 TB/year workload rating supports continuous 24/7 operation in always-on NAS environments.

👎 Cons

  • 5400 RPM spindle speed delivers lower random access performance compared to 7200 RPM NAS drives.
  • Does not include built-in hardware encryption for data-at-rest protection.
  • 3-year warranty is shorter than the 5-year coverage offered on Western Digital's higher-tier Red Pro and Ultrastar lines.
  • Higher capacity means a longer RAID rebuild time if the drive fails in a multi-disk array.

Frequently Asked Questions

This drive uses CMR (Conventional Magnetic Recording), which is why Western Digital designates it as "WD Red Plus" to distinguish it from the SMR-based "WD Red" line.
The WD140EFFX supports up to 180 TB per year of data transferred, making it suitable for moderate NAS workloads in small to medium business environments.
It is designed for NAS systems with up to 8 drive bays.
During the rebranding transition, some units ship with the older "WD Red" label. If the model number on the drive reads WD140EFFX, it is confirmed to be the CMR version regardless of the label.
Western Digital provides a 3-year limited warranty on the WD Red Plus WD140EFFX.

Related Products