This article covers WD 0TB MY CLOUD PR4100 NAS.

Overview

The Western Digital MY CLOUD PR4100 is a 4-bay network-attached storage (NAS) designed for home and small office use. This diskless (“0TB”) model lets you install up to four 3.5-inch SATA drives of your choice. Powered by an Intel Pentium N3710 quad-core processor and 4GB of DDR3L RAM, it features built-in hardware transcoding for Plex Media Server, enabling smooth Full HD video streaming. It supports RAID 0, 1, 5, 10, and JBOD, offering flexibility between performance and redundancy.

Connectivity & Compatibility

The PR4100 comes with dual Gigabit Ethernet ports that support link aggregation for faster throughput. It also includes USB ports for attaching external storage or backup drives. Compatible with Windows 10/8/7, macOS (El Capitan and later), and DLNA/UPnP devices. The My Cloud OS 3 dashboard provides intuitive file management, user permissions, and scheduled backups. AES-256-bit volume encryption ensures data security.

Product Info

Released in 2017, the PR4100 remains available through retailers like at around ¥93,610 (as of early 2026). It carries a 2-year warranty and includes a power adapter, Ethernet cable, and Quick Install Guide. Positioned in the mid-range NAS segment, it balances price, expansion capacity, and media-serving features, making it suitable for enthusiasts and small businesses that need reliable centralized storage.

Best Use Cases

Plex streamers: The hardware transcoding handles multiple 1080p streams effortlessly. It’s ideal for families who want to access their movie and TV library from various devices. Not recommended for heavy 4K transcoding workloads. Data hoarders: With up to four drives, you can build a large-capacity RAID array (e.g., RAID 5). The combination of redundancy and encryption protects valuable photos, documents, and backups. Remote-access users: My Cloud’s cloud services allow secure file access from anywhere. It also works as a remote backup target for off-site protection. Caveats: Since drives are sold separately, total cost can add up. The processor is entry-level, so it’s not suitable for virtualization or heavy multitasking.

Product Disclosure (Amazon)

  • Manufacturer: ウエスタンデジタル(Western Digital)
  • Seller: ナオトの店
  • Fulfilled by: ナオトの店
  • ASIN: B01GLRX6C4
  • Note: This article covers a manufacturer-made product based on Amazon listing details.