WD Network 4TB Network Internal Hard Drive (WDBMMA0040HNC-NRSN)

Model Number: WDBMMA0040HNC-NRSN
Web Code: 10291894


Add additional storage to your NAS system with the WD Network NAS internal hard drive. Designed for use in NAS systems with up to five bays, this hard drive provides reliable, cool, and quiet performance in demanding 24/7 environments.
Sold and shipped by Best Buy
Available online
Reserve & Pick Up

This product is currently unavailable for Reserve & Pick Up at nearby stores.

Geek Squad Protection Replacement Plan
See Benefits

No Plan


2 Years


3 Years


  • 4TB storage capacity
  • SATA interface
  • 3.5-inch drive size
  • Designed and tested to meet the requirements of NAS systems with up to five bays
  • Tested for reliability in 24/7 environments
Portable/ Desktop
4 TB
Drive Type
Internal Hard Drive
Drive Size
3.5 in
Internal or External
PC/Mac Compatibility
PC and Mac


Dimensions (cm)
12.7 (W) x 19.1 (H) x 6.4 (D) cm
Dimensions (in)
5 (W) x 7.52 (H) x 2.52 (D) in
Product Weight
0.8 kg
  • Mounting Screws
  • Quick Install Guide

  • So far, so good.
    by Curtman

    on January 2, 2019

    No issues with these drives. I only wish it was a faster RPM. They do offer faster RPM drives, but they are more expensive.

    Review originally posted on bestbuy.com

  • Bought it for NAS
    by Kyle

    on November 29, 2018

    I bought it for NAS 2years ago. Never had any issue.

    Review originally posted on bestbuy.com

  • great hard drive
    by ptljel

    on November 17, 2018

    this hard drive is great easy to set up in a back u server. bullet proof.

    Review originally posted on bestbuy.com

See helpful questions and answers from shoppers like you.

Check our return policy and you'll find specific return information for your product and steps on how to return in-store or by mail.