1. はじめに
This manual provides comprehensive instructions for the setup, operation, maintenance, and troubleshooting of your WD My Cloud EX2 Ultra 2-Bay NAS. This high-performance network-attached storage solution allows you to centralize your media, automatically sync content across computers, share files and folders, and utilize multiple backup options for a personalized system.

図1: 前面 view of the WD My Cloud EX2 Ultra NAS. The device is a compact, charcoal-colored rectangular unit with the WD My Cloud EX2 Ultra logo on the front. It features three blue LED indicator lights for power, drive 1 status, and drive 2 status.
2. 箱の中身
パッケージ内にすべてのコンポーネントが揃っていることを確認します。
- WD My Cloud EX2 Ultra NAS Device
- イーサネットケーブル
- 電源
- クイックインストールガイド
3. セットアップ
3.1 ハードウェアのインストール
デバイスを開梱します。 Carefully remove the NAS device and all accessories from the packaging.
イーサネットケーブルを接続します: Connect one end of the provided Ethernet cable to the Gigabit Ethernet port on the back of the NAS and the other end to an available LAN port on your router or network switch.

図2:背面 view of the WD My Cloud EX2 Ultra NAS. This image displays the back panel of the device, highlighting the two USB 3.0 ports, the Gigabit Ethernet port, and the DC IN 12V power input.
電源の接続: Plug the power supply into the DC IN 12V port on the back of the NAS, then plug the power adapter into a wall outlet. The device will power on automatically.
インジケーターライトを観察します: The power indicator light on the front will turn blue. The drive indicator lights will also illuminate as the drives initialize.
3.2 初期ソフトウェア構成
ハードウェアを接続したら、ソフトウェアのセットアップに進みます。
Access the Dashboard: 開く web browser on a computer connected to the same network as the NAS. Type http://wdmycloudex2ultra/ or the IP address of your NAS into the address bar and press Enter. If the address does not work, use the WD Discovery software to locate your device.
画面上の指示に従ってください: The setup wizard will guide you through creating an administrator account, setting up storage configurations (e.g., RAID 1 for data redundancy), and configuring cloud access.
ファームウェアの更新: It is recommended to check for and install the latest firmware updates through the dashboard to ensure optimal performance and security.
4. Operating Your WD My Cloud EX2 Ultra
4.1 Accessing Your Files
ローカルネットワークアクセス: Files can be accessed via network shares on your computer. Map network drives for easy access.
Remote Access (My Cloud OS): Use the My Cloud mobile app or the MyCloud.com web portal to access your fileインターネット接続があればどこからでもご利用いただけます。
4.2 データ管理
File 共有: Create users and groups, and assign permissions to specific folders for secure file 共有。
Automatic Syncing: 自動設定 file synchronization across your computers using the WD Sync application.
バックアップ オプション: Utilize various backup features including NAS to NAS backup, USB backup, cloud backup, and PC/Mac backup software integration.
4.3つの高度な機能
メディアサーバー: Enable the built-in Twonky media server or install Plex Media Server to stream content to compatible devices.
アプリのインストール: Expand functionality by installing third-party applications directly from the NAS dashboard.
5. メンテナンス
ファームウェアの更新: システムの安定性、セキュリティ、新機能へのアクセスを確保するために、ファームウェアのアップデートを定期的に確認してインストールしてください。
ドライブのヘルスチェック: Periodically monitor the health status of your hard drives through the NAS dashboard. Replace drives if warnings or errors are reported.

図3:内部 view of the WD My Cloud EX2 Ultra NAS. This image shows the top cover lifted, revealing the two drive bays with one hard drive partially inserted, demonstrating the easy access for drive installation or replacement.
システムログ: Review system logs for any unusual activity or errors that may indicate potential issues.
清潔さ: Keep the device in a well-ventilated area and ensure vents are free from dust accumulation. Do not block the ventilation openings.
6。 トラブルシューティング
| 問題 | 考えられる原因 | 解決 |
|---|---|---|
| Device not accessible on network. | Network cable disconnected, incorrect IP address, network conflict. | Check Ethernet cable connection. Restart router and NAS. Verify NAS IP address using WD Discovery or router's DHCP client list. |
| 遅い file 転送速度。 | Network congestion, old Ethernet cable, drive health issues, high CPU usage. | Ensure Gigabit Ethernet connection. Use Cat5e or Cat6 cables. Check drive health in dashboard. Monitor NAS resource usage. |
| アクセスできません fileリモートで。 | My Cloud service not configured, internet connection issues, firewall blocking. | Verify My Cloud service is enabled and configured in the dashboard. Check internet connectivity. Ensure router firewall allows necessary ports. |
| Drive indicator light is red or flashing. | Drive failure, degraded RAID array. | Check the dashboard for specific drive status and error messages. Replace faulty drive if necessary. |
7. 仕様
- モデル: WDBVBZ0240JCH-EESN
- 容量: 24 TB (as configured)
- プロセッサ: High-performance 1.3 GHz dual-core
- メモリ: 1GB DDR3
- インタフェース: Gigabit Ethernet, USB 3.0
- 寸法(長さx幅x高さ): 6.1 x 3.9 x 6.75インチ
- 重さ: 4.4ポンド
- オペレーティング·システム: My Cloud OS
- 電源: 12V直流
- 色: 木炭
- ハードドライブインタフェース: USB 3.0(外付けドライブ用)
- 対応デバイス: Desktop computers (Mac, PC)
8. 保証とサポート
For warranty information, technical support, and additional resources, please visit the official WD support website. You can find FAQs, downloads, and contact information for customer service.
WDサポート Webサイト: https://support.wdc.com/
Please have your product model number (WDBVBZ0240JCH-EESN) and serial number ready when contacting support.