Secure your vital data with WD’s My Book Mirror Edition dual-drive storage system with RAID Mirroring. With RAID-based continuous data protection, automatic data backup software, and user-serviceability, this is the perfect backup system for your irreplaceable data.

WD’s My Book Mirror Edition dual-drive storage system automatically mirrors your valuable data for extra protection. The USB 2.0 interface and a powerful combination of features make this system the storage solution of choice for home users, small offices, and anyone looking for extra assurance that their data is safe.

The safest place for your data

Using RAID mirroring technology, this system automatically and continuously duplicates your data for the ultimate in data protection. If one drive in this two-drive system ever fails, the system continues to run and your data is safe. How’s that for peace of mind

Automatic backup software

Designed to use only WD drives with GreenPower technology, this system, with its efficient convection cooling architecture, fan-less design, and power saving mode, is reliably cool, remarkably quiet and consumes up to 33% less power than standard systems.

Tests based on comparison between a 1 TB dual-drive system using 7200 RPM drives and a 1 TB dual-drive system using WD’s GreenPower drives.

Easy to set up, easy to use

  • You re up and running in a few simple steps. WD s intuitive RAID wizard software lets you easily modify your RAID settings.
  • Capacity Gauge – See at a glance how much space is available on your drive.
  • User serviceable – Want to upgrade a drive? Simply open the case and replace the existing drive no screwdriver needed.

NOTE: RAID 0 (striped) accesses the full capacity of the drives. RAID 1 (mirrored) accesses half of the total capacity for data protection.

Ideal for

  • Gain peace of mind with this true data guardian
  • Organize and archive vast data libraries
  • Edit and exchange massive amounts of data

System Requirements

  • Available USB port
  • Mac OS X 10.4.11+, 10.5.2+
  • Windows 2000/XP/Vista

Package Includes

  • Dual-drive storage system
  • USB cable
  • AC adapter
  • Software CD
  • Quick Install Guide

Performance Specifications

  • Serial Transfer Rate USB 2.0
  • Serial Bus Transfer Rate (USB 2.0) 480 Mb/s (Max)

Physical Specifications

  • Capacity 2 TB / Mirrored
  • Interface USB 2.0

Environmental Specifications

Temperature (English)

  • Operating 41 F to 95 F
  • Non-operating -4 F to 149 F

Temperature (Metric)

  • Operating 5 C to 35 C
  • Non-operating -20 C to 65 C

Electrical Specifications

  • Power Dissipation
  • AC Input Voltage 100-240 VAC
  • AC Input Frequency 47-63 Hz

Physical Dimensions


  • Height: 6.54 Inches
  • Length: 6.06 Inches
  • Width: 3.87 Inches
  • Weight: 5.2 Pounds


  • Height: 166 mm
  • Length: 154 mm
  • Width: 98 mm
  • Weight: 2.63 kg

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Manufacturer: Western Digital SKU: WDH2U20000E Category: