Western Digital

Western Digital WDBNFA0160KBK-NESN 16TB My Cloud Pro NAS

4.3 (427 reviews)

A quad-core Intel Pentium NAS with hardware transcoding handles your 16TB Plex media library without taxing your network.

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Overview

The WD My Cloud Pro PR4100 is a 4-bay NAS built around an Intel Pentium N3710 quad-core processor and 4GB DDR3L RAM — a hardware specification that meaningfully distinguishes it from ARM-based consumer NAS units. The N3710's Intel Quick Sync engine provides hardware-accelerated H.264 and HEVC decoding, which is the specification that makes this unit suitable as a dedicated Plex Media Server. At 16TB across four bays with dual Gigabit Ethernet, the PR4100 is designed to function as a centralized media and file repository for households or small teams where multiple users access large libraries simultaneously. AES 256-bit volume encryption and password protection address data security requirements for sensitive content stored on-premises.

The PR4100 is purpose-built for media-centric deployments: users with large Plex libraries who need server-side transcoding without running a full desktop PC around the clock, and small creative teams who need centralized NAS storage with reliable multi-user access. My Cloud OS 3 provides an accessible management interface for setup and drive management without requiring command-line familiarity. The dual Gigabit Ethernet ports with link aggregation support scale network throughput for environments where a single 1 Gbps connection becomes a bottleneck during concurrent large file transfers. Where this unit shows its age is in the software ecosystem — My Cloud OS 3 has a more limited third-party app library than current-generation platforms, and the N3710 SoC is not competitive for transcoding workloads that have shifted toward 4K HEVC at high bitrates.

Key Features

Intel Pentium N3710 Quad-Core 1.6GHz Processor with 4GB DDR3L Memory

Built-in video transcoding for HD streaming through Plex

Centralized storage to organize media and improve your workflow

Quick, easy setup and a robust Device Manager with My Cloud OS 3

Comprehensive security through password protection and AES 256 bit volume encryption

Specifications

Processor
Intel Pentium N3710 Quad-Core, 1.6 GHz
Memory
4GB DDR3L RAM
Total Storage
16TB
Drive Bays
4
Network Interface
Dual Gigabit Ethernet (Link Aggregation supported)
RAID Support
RAID 0, 1, 5, 6, 10, JBOD
Encryption
AES 256-bit Volume Encryption
Video Transcoding
Built-in hardware transcoding (Plex optimized)
Operating System
My Cloud OS 3

Pros & Cons

👍 Pros

  • Intel Pentium N3710 with Quick Sync enables hardware-accelerated video transcoding, supporting multiple simultaneous Plex streams without CPU bottleneck.
  • 4GB DDR3L RAM provides adequate headroom for My Cloud OS 3 and concurrent user sessions beyond what entry-level 512MB NAS units can support.
  • Dual Gigabit Ethernet with link aggregation support delivers up to 2 Gbps aggregate throughput for high-demand multi-user environments.
  • AES 256-bit volume encryption protects data at rest against physical drive theft without performance-degrading software encryption overhead.
  • 16TB capacity across four bays provides substantial storage with RAID 5 or 6 available for fault tolerance at scale.

👎 Cons

  • My Cloud OS 3 has been superseded by newer WD firmware generations; long-term software support and security patch cadence for this platform should be verified before deploying in a production environment.
  • The N3710 at 1.6 GHz is an aging low-power SoC — 4K HEVC transcoding in software is beyond its practical capability, and even hardware-assisted 4K transcode at high bitrates can tax the processor.
  • 4GB DDR3L RAM is not user-upgradeable on this model, capping future capacity expansion for memory-intensive application plugins.
  • Dual Gigabit Ethernet tops out at 2 Gbps with link aggregation — no 10GbE option for users with high-speed network infrastructure.
  • My Cloud OS 3's application ecosystem is more limited than competing NAS platforms (e.g., Synology DSM), constraining third-party app availability.

Frequently Asked Questions

The PR4100 runs an Intel Pentium N3710 quad-core processor at 1.6 GHz with 4GB DDR3L RAM. Intel's Quick Sync video engine on this SoC supports hardware-accelerated transcoding via Plex Media Server, enabling multiple simultaneous 1080p transcode streams without fully loading the CPU — a meaningful capability gap over ARM-based NAS units.
With hardware transcoding enabled in Plex Media Server (requires an active Plex Pass subscription), the N3710's Quick Sync engine can handle several concurrent 1080p transcode sessions. Direct play of 4K content is also supported, reducing transcoding demand when client devices support the source codec.
The PR4100 ships with four drives pre-installed. The specific RAID configuration should be verified at purchase, but the unit supports RAID 0, 1, 5, 6, 10, and JBOD through WD's My Cloud OS 3 interface, allowing you to reconfigure for your preferred balance of capacity versus redundancy.
The PR4100 includes dual Gigabit Ethernet ports, supporting link aggregation for up to 2 Gbps throughput on a compatible switch. This removes the NIC as a bottleneck for multi-user environments or large file transfers.
AES 256-bit encryption in My Cloud OS 3 is applied at the volume level. Encrypted volumes require a password at mount time, providing data protection against physical drive removal while maintaining normal network access for authenticated users during operation.