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WD My Cloud EX4100 Expert Series 4-Bay Network Attached Storage Diskless, Black
Faster speed, better streaming: Powerful marvell ARMADA 388 1.6 GHs dual-core processor and 2 GB DDR3 memory for ultra-fast transfer speeds of 114 MB/s upload and 108 MB/s download for media streaming Access from anywhere: Save, access and stream
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WD My Cloud EX4100 Expert Series 4‑Bay Network Attached Storage
The WD My Cloud EX4100 is a high‑performance, diskless NAS enclosure designed for home and small office environments that demand reliable data storage, advanced networking features, and robust security. Built around the Marvell ARMADA 388 dual‑core processor and equipped with 2 GB DDR3 RAM, this device delivers smooth operation even under demanding workloads.
Key Design Features
- Diskless Caddy Architecture: The enclosure is engineered for hot‑swap 3.5" SATA III drives, allowing you to add or replace storage without shutting down the system.
- Dual Gigabit Ethernet Ports: Two RJ‑45 ports support link aggregation (LACP) and provide redundancy for uninterrupted network connectivity.
- Active Cooling System: A single high‑efficiency fan keeps internal temperatures in check, ensuring longevity of both the enclosure and installed drives.
- LED Indicators & Display Panel: Integrated LEDs and a small display give real‑time status updates on drive health, network activity, and system alerts.
- Power Management: Supports optional 1+1 redundant power supplies (UPS compatible) and features automatic fan speed control based on temperature sensors.
Performance & Capacity
The EX4100 can accommodate up to four 3.5" SATA drives, offering a maximum supported storage capacity of 24 TB. With the ability to configure RAID levels—RAID 0, RAID 1, RAID 5, RAID 10, and JBOD—the user can balance performance, redundancy, and cost according to their needs.
Drive interfaces are SATA III (6 Gb/s), ensuring high throughput for data transfer. The device also supports Jumbo Frames (up to 9,216 bytes) to optimize large file transfers over the network.
Operating System & Software Suite
The enclosure ships with My Cloud OS, a Linux‑based firmware that offers web‑based management via HTTP/HTTPS and SNMP v2. The OS supports a wide range of file systems, including EXT2/3/4, FAT32, HFS+, and NTFS, making it compatible with Windows, macOS, and Linux clients.
Included software enhances functionality:
- WD My Cloud: Centralized management app for device configuration and monitoring.
- WD QuickView: Lightweight media server for streaming photos, music, and videos to DLNA/UPnP clients.
- WD SmartWare Pro: Backup solution with a 10‑user license, enabling scheduled backups across the network.
- Photos & iTunes Server: Built‑in media servers for photo libraries and Apple music collections.
Networking Protocols & Security
The EX4100 supports a comprehensive set of networking protocols:
- SMB/CIFS, AFP, NFS, FTP, WebDAV for file sharing across Windows, macOS, and Linux.
- SSH, LLTD, UPnP, NTP, Apple Bonjour for secure remote access and network discovery.
- IPv4 & IPv6 support ensures compatibility with modern networks.
- Full Volume Encryption (FVE) using 256‑bit AES guarantees that stored data remains protected even if the drives are removed.
Backup and Redundancy Options
Data protection is a cornerstone of the EX4100’s design. It offers:
- Cloud Backup: Seamless integration with WD Cloud for off‑site replication.
- iSCSI LUN: Enables block‑level storage access for virtual machines and high‑performance applications.
- RAID Level Migration: Allows changing RAID configurations without data loss, facilitating scalability.
- Spin‑Down Idle Disk: Drives enter low‑power mode after inactivity to conserve energy.
Power and Environmental Specifications
- Input Voltage: 100–240 V AC, 50/60 Hz.
- External Power Supply: 19 V DC, 6.32 A output.
- Operating Temperature: –40 °C to +70 °C (storage: –40 °C to +70 °C).
- Humidity Range: 8–90 % RH.
- Weight: 3.42 kg (desktop form factor).
Connectivity & Expansion
The enclosure offers a balanced mix of ports for versatile connectivity:
- 2 × Gigabit Ethernet RJ‑45 with support for LACP.
- 3 × USB 3.0 (Type‑A) and 3 × USB 3.2 Gen 1 (Type‑A) for external peripherals, backup devices, or additional storage.
- Hot‑Swap Bays: Four 3.5" SATA III slots allow seamless drive replacement.
Compliance & Certifications
The EX4100 meets stringent industry standards:
- RoHS compliant, ensuring the absence of hazardous substances.
- IEEE 802.1Q (VLAN) and IEEE 802.1ad (Q‑in‑Q) for advanced network segmentation.
- DLNA Certified for media streaming compatibility.
- UPnP, LLTD, NTP, Apple Bonjour support enhances plug‑and‑play functionality across diverse ecosystems.
Ideal Use Cases
- Home Media Server: Stream movies, music, and photos to smart TVs, gaming consoles, and mobile devices.
- Small Office File Share: Centralized storage for documents, spreadsheets, and collaborative projects with secure access controls.
- Backup Hub: Consolidate local backups from multiple PCs and laptops into a single, encrypted repository.
- Virtual Machine Host: Provide iSCSI LUNs to hypervisors like VMware or Hyper‑V for high‑performance storage.
Conclusion
The WD My Cloud EX4100 Expert Series 4‑Bay NAS delivers a powerful combination of performance, flexibility, and security. Its diskless design, robust networking capabilities, and comprehensive software suite make it an excellent choice for users who require reliable data storage without the complexity of traditional server setups.
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 167.08 EUR   495.90 EUR  462.01 EUR  129.99 EUR  149.00 EUR |
| Colors
Predominant colors of the product |
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| Tags | W Power Budget DIN-Rail Switch TRENDnet 5-Port Hardened Rated Ethernet Unmanaged |
| Alternative searches | 4-Bay NAS Drive Tray RAM Module Diskless NAS QNAP TS-453D Asustor AS5304T WD My Cloud EX4 TerraMaster F4-210 WD My Cloud EX4100 WD My Cloud PR2100 WD My Cloud PR4100 Expansion Enclosure Network Attached Storage WD My Cloud Expert Series Synology DiskStation DS420 Synology DiskStation DS920 Synology DiskStation DS418j Asustor Lockerstor 4 AS6604T |
| Identifiers | |
| Brand | WD WD is a brand of hard drives and storage solutions. They offer a wide range of products for both personal and business use. WD is known for their high-quality products and customer service. |
| MPN | WD WDBWZE0000NBK-EESN |
| Model | WD WDBWZE0000NBK-EESN |
| ID | 8583901 |
| Dimensions / Weight | |
| Key Features | |
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Case colour The colour or combination of colours that a product’s outer shell or enclosure is available in, expressed as common names such as "Black", "Silver" or comma‑separated lists like "Black, White". It indicates the visual appearance of the case for consumers.
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Black |
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CPU Family The processor family identifies the group or series of CPU models that share a common architecture, design, and performance characteristics. It helps users compare processors across brands and generations by indicating the underlying technology used in the chip.
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Marvell ARMADA |
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CPU Socket The physical connector used by a processor to attach to a motherboard or other compatible platform, such as LGA 1151, BGA 1440, Socket AM4, or LGA 1200. This attribute indicates the exact socket designation required for proper CPU installation and compatibility with other hardware components.
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Socket 754 |
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CPU Speed The maximum operating frequency of a central processing unit (CPU), expressed in hertz (Hz). This value indicates how many cycles per second the CPU can execute under normal conditions and is useful for comparing performance potential across different models.
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1.6 GHz |
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CPU Type The specific name or designation of the central processing unit installed in a device, such as "Intel Core i5-11400" or "AMD Ryzen 7 5800X." It identifies the exact processor variant and helps users compare performance, compatibility, and features across products.
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Other |
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Disk form factor The physical size or shape of a storage disk, indicating the dimensions and mounting format used in computers and other devices. Common values include standard sizes such as "3.5" in., "2.5" in., and form‑factor codes like "M.2 2280" or "mSATA". This attribute helps users identify which drives are compatible with a given enclosure, motherboard, or system.
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3.5 |
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Enclosure Type The form or mounting style of a hardware component, such as internal, portable, desktop, rack‑mountable, or external. It indicates how the device is physically housed and where it can be installed.
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Caddy |
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Hard drive interface The physical or logical interface used by a hard drive to connect with other components, such as SATA, SAS, USB, PCI Express, or M.2. It indicates the technology that enables data transfer and power delivery between the device and its host system.
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SATA III |
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Memory size The amount of digital storage available in a device for holding data or program code, expressed as a data size such as megabytes (MB) or gigabytes (GB). It indicates how much information the component can hold at once and is commonly used to describe RAM modules, flash drives, SSDs, and other memory devices.
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2048 MB |
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Memory type The classification of the memory technology used in a device, such as DDR4 SDRAM, LPDDR3, GDDR6, or other variants. It indicates the architecture and generation of the RAM modules installed or supported by the product.
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DDR3 |
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Network Card Speeds The maximum data transfer rate supported by the network interface card, expressed in bits per second or common abbreviations such as Gbps or Mbps. This value indicates how fast the device can send and receive data over a wired connection.
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10/100/1000 Mbps |
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Pc connection type The physical connection types that a PC product uses to interface with other devices or peripherals, such as HDMI, USB, Ethernet, DisplayPort, VGA, DVI, SATA, and similar cables or ports. Each value represents one distinct connector or cable type that the product supports for data transfer, video output, power delivery, or networking.
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LAN Network |
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Processor number The unique model designation of a computer processor, such as "8250U" or "i7-1165G7". It identifies the specific CPU used in a device and can be compared across products to infer performance, generation, and compatibility.
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388 |
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RJ-45 ports Represents the total count of RJ‑45 Ethernet interfaces present on a product. Each port can accept a standard Ethernet cable for wired network connectivity.
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2 |
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USB 2.0 / USB3.0 Indicates whether the product is compatible with both USB 2.0 and USB 3.0 interfaces, allowing it to connect to devices that use either standard.
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No |
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USB Ports Represents how many USB connectors are available on the product. The value is a simple integer indicating the total count of USB ports, regardless of type or version.
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2x USB3.0 |
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USB Support A list of the USB interface versions that a product supports, such as USB 2.0, USB 3.0, USB 3.1, USB 3.2 or combinations like "USB 2.0 & USB 3.0". The values indicate which USB standards are available for connecting peripherals and external devices.
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USB3.0 |
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Warranty The length of time for which the manufacturer guarantees that the product will be free from defects in materials and workmanship, typically expressed in years or months.
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1 Year |
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