DriveStation™ Duo USB 3.0 Hard Drive
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HD-WLU3R1<br />
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DriveStation™ Duo
USB 3.0 RAID Storage and Backup

DriveStation™ Duo is a 2-drive, USB 3.0, high capacity, redundant storage and backup solution for PC and Mac® computers. Configure for full capacity or mirror the hard drives for redundant data protection.

  • 2-Drive
  • USB 3.0
  • RAID 0/1
4 TB / HD-WL4TU3R1
6 TB / HD-WL6TU3R1
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DriveStation™ Duo is an easy to use 2-drive USB 3.0 storage solution for PC and Mac® computers. Instantly expand storage or schedule automatic back-ups with USB 3.0/2.0 plug and play connectivity.

easy to use storage EASY TO USE STORAGE

With terabytes of storage, DriveStation™ Duo provides reliable, easy to use storage for your PC or Mac® computer. Quickly expand the capacity of your computer for your favorite music, photos, videos and more.

The simple USB 3.0/2.0 interface offers plug and play setup and universal connectivity.

easy scheduled backup EASY SCHEDULED BACKUP

DriveStation™ Duo is perfect for backing up your important files. Disaster and hard drive failures can occur unexpectedly; don't leave your important files and treasured memories in the hands of chance. Schedule regular backups for your PC with Buffalo Backup Utility or use Time Machine® for your Mac®. Protect all of your data, down to the last byte.


DriveStation™ Duo provides users the flexibility to easily maximize capacity or protect their data using RAID redundancy.

  • RAID 0 combines both drives into a single array offering maximum storage capacity with no redundancy.
  • RAID 1 offers maximum redundancy by mirroring both drives. Data is automatically duplicated, so that if one drive fails, the data is kept safe on the other. Buffalo recommends RAID 1 for all devices using two hard drives.

NovaBACKUP Buffalo Edition NovaBACKUP® Buffalo Edition

DriveStation™ Duo comes with 11 licenses of NovaBACKUP® Buffalo Edition (1 server and 10 workstations), an easy to use, complete backup solution for Windows® PCs, Windows® Servers, and SQL/Exchange Databases.

  • Restore any file, from a single view, regardless of when or where the files were backed up
  • Local and online backup
  • Free and premium off-site backup capabilities
  • Integration of online storage services for reliable compatibility
  • Disk imaging disaster recovery allows complete system imaging and complete system restore
  • System restore completed in matter of hours instead of days
  • Bare Metal Restore for quick reconstruction on blank system
  • Essential to business continuity
  • Each unit comes with 11 licenses of NovaBACKUP® Buffalo Edition (1 server and 10 workstations)

Buffalo tools BUFFALO TOOLS

Buffalo Tools is a feature-rich suite of optional software included on many Buffalo DriveStation™ and MiniStation™ storage products. Any or all of the following components of Buffalo Tools may be installed on Windows® PCs.

  • Buffalo's Backup Utility is an easy-to-use and fully featured backup software for Windows® PCs and can be used to back up one or multiple computers with a single Buffalo external hard drive. 
  • eco Manager is an energy efficiency tool used to conserve energy and reduce battery consumption by regulating the power usage of the hard drive, cutting power to the drive during extended periods of inactivity. 
  • TurboPC includes two components to enhance file transfer performance with external hard drives. It also includes TurboCopy which provides additional system adjustments to increase performance substantially.
  • SecureLock software for Windows® provides complete control of the data encryption on your Buffalo external hard drive, providing password protection and software data encryption.
Internal Hard Drives
Number of Drives 2
Drive Interface SATA 3 Gb/s
Hard Drive Sizes 1 TB, 2 TB, 3 TB, 4 TB
Total Capacity 2 TB, 4 TB, 6 TB, 8 TB
Supported RAID Levels 1, Normal (Independent Disks)
Max. Disk Transfer Rate 225 MB/s (RAID 0, sequential read)
USB Interface
Standard Compliance USB 3.0 / USB 2.0
Number of Ports 1
Data Transfer Rates Max. 5 Gb/s (USB 3.0), Max. 480 Mb/s (USB 2.0)
Dimensions (W x H x D) 3.4 x 5 x 8.1 in
Weight 4.5 lbs
Operating Environment (Fahrenheit) 41-95°
Client OS Support Windows® 8 (32-bit/64-bit), Windows® 7 (32-bit/64-bit), Windows Vista® (32-bit/64-bit), Windows® XP, Windows®2000, Windows Server® 2003 (32-bit)*, Windows Server® 2003 R2 (32-bit)*, Windows Server® 2008 (32-bit/64-bit)*, Windows Server® 2008 R2 (64-bit)*, Mac OS® X 10.5 or later*†
Power Supply AC 100-240V 50/60 Hz

*Only basic external hard drive functionality is supported in these operating systems, some included utilities may not work.

†The HDD default format is NTFS; to work with Mac, reformat the HDD using Mac Disk Utility.

Datasheets Product Datasheet »opens in new window
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Can I replace the hard drives in my DriveStation Duo by myself?

During the warranty period, please contact Buffalo Americas and we will replace any defective drives for you. The drives are easily replaced by sliding them into their bays behind the removable front panel; no tools are required. If maintaining your warranty is no longer a concern, most 7200 rpm SATA drives from reputable manufacturers will work fine in the DriveStation Duo. Because of thermal and power issues, the use of drives with speeds higher than 7200 rpm is not recommended.

Do I have data redundancy with RAID 0 mode?

No. While Full Capacity RAID 0 mode gives you more disk space, it will provide no data redundancy. Please, configure your DriveStation Duo for RAID 1 to keep your data most secure.

Do I need to format the DriveStation Duo before I can use it?

All Buffalo DriveStation products come preformatted FAT32and are ready to use. It can also be reformatted to NTFS or HFS+ easily from any Windows® or Mac computer.

Is the DriveStation compatible with Windows Server 2000, 2003 or 2008?

Yes. The DriveStation Duo works perfectly with Windows Server 2000, 2003 and 2008. The included NovaBACKUP Business Essentials is also compatible with Windows Server.

What capacity will the device have in different RAID modes?

The dual-drive storage products support RAID 0 and RAID 1. In RAID 0, both hard drives are combined to provide maximum storage equivalent to the stated capacity of the device. However, in RAID 0 there is no data redundancy. RAID 1 provides data redundancy by mirroring data from one hard drive to the other and therefore provides half of the stated capacity (the other half is used for data redundancy).

Will the DriveStation Duo work on my Mac?

Yes, the DriveStation Duo will work perfectly on your Mac with OS X 10.4.11 and later. However, keep in mind that the DriveStation is pre-formatted with a FAT32 file system. Certain Mac features (TimeMachine) will require that you re-format the DriveStation with your Mac for the HFS+ file system which is very easy to do with any Mac computer.

Type File Post Date Version OS Support Notes
ZIP 445.15 KB
Download »
2015-02-12 1.00 Windows Firmware update for the HD-WLU3 and HD-WHU3
DMG 10.03 MB
Download »
2015-02-12 1.00 Mac Firmware update for HD-WLU3 and HD-WHU3
Type File Post Date Version OS Support Notes
TXT 1.26 KB
Download »
2013-06-04 1.51   Readme for CD-Image
PDF 1.39 MB
Download »
2012-12-14 35012854 ver.01   User's Manual
PDF 17.21 MB
Download »
2011-12-05     User Manual
Type File Post Date Version OS Support Notes
ZIP 12.15 MB
Serial Number Required »
2015-02-26 1.35 Windows TurboPC EX
ZIP 383.27 KB
Serial Number Required »
2014-08-13 1.20 Windows Disk Formatter2 Utility
ZIP 4.09 MB
Serial Number Required »
2013-01-16 1.17 Windows Backup Utility
ZIP 4.56 MB
Serial Number Required »
2013-01-16 3.25 Windows RAMDisk Utility
ZIP 312.39 KB
Serial Number Required »
2013-01-16 1.07 Windows Buffalo Tools Launcher
Type File Post Date Version OS Support Notes
ZIP 172.47 MB
Serial Number Required »
2013-06-04 1.51   CD Image for HD-WLU3R1
Type File Post Date Version OS Support Notes
TXT 605.00 B
Download »
2015-02-26 1.35 Windows TurboPC EX Readme
TXT 2.73 KB
Download »
2015-02-12 1.00 Windows Readme for firmware update
TXT 2.29 KB
Download »
2015-02-12 1.00 Mac Readme for firmware update
TXT 644.00 B
Download »
2013-01-16 1.17 Windows Readme for Backup Utility
TXT 561.00 B
Download »
2013-01-16 1.12 Windows Readme for TurboPC EX
TXT 865.00 B
Download »
2013-01-16 3.25 Windows Readme for RAMDisk Utility
TXT 577.00 B
Download »
2013-01-16 1.07 Windows Readme for Buffalo Tools Launcher
PDF 1.09 MB
Download »
2013-01-16 1.02 Windows Readme for Disk Formatter2
Type File Post Date Version OS Support Notes
PDF 4.97 MB
Download »
Type File Post Date Version OS Support Notes
PDF 2.69 MB
Download »
2014-03-04     Quick Setup Guide for HD-WLU3