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8.0TB Mercury Elite Pro Dual USB 3.0 & Thunderbolt 10Gb/s RAID Storage Solution. 7200RPM w/128MB data buffer. Supports RAID 0, 1, span & independent drives. All cables, Data Backup 3, NovaBACKUP & Intech SpeedTools included. 3 Year OWC Limited Warranty. (METB7DH8.0T) Same Day $779.99
CyberSaver Price: $599.00
Rating: 4.6 based on 53 reviews.
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OWC Mercury Elite Pro Dual

8.0TB Multi-Interface Performance RAID

Mac / PC / Thunderbolt / USB 3.0 & 2.0
High-Performance, High-Reliability, Portability, and Style are standard for the OWC Mercury Elite Pro Dual Series!
OWC external drives are built to last and have become the "go to" drives for professionals and enthusiasts alike. The OWC Mercury Elite Pro Dual houses two drives that can be easily configured in RAID 0, RAID 1, span, or JBOD/independent modes via the easy-to-use RAID selector switch on the back, while USB 3.0 and Thunderbolt interfaces provide blazing fast access to your data. This feature-packed external drive comes in a durable, heat-dissipating, brushed-aluminum enclosure.
Outstanding Features
High-Performance + Flexible
A blazing fast Thunderbolt chipset unleashes the full potential of this rugged external drive's dual 3.5" hard drives with sustained data rates of nearly 400MB/s plus the flexibility of hardware RAID 0, 1, and non-RAID modes to best suit your demanding applications and workflow.
The OWC Mercury Elite Pro Dual Series is Built to Last, with a quality design and the best components, backed up by a 3 Year OWC Solution Limited Warranty.
The Compact and Shock-Resistant Design has the Mercury Elite Series going places! In addition, the OWC Mercury Elite Pro Dual series offers two Thunderbolt ports and one USB 3.0 port for easy use with ANY system! The OWC Mercury Elite Pro Dual even includes all needed cables!
Smart Sense
Power Saving Connection Sensor. A built-in sensor detects when the data cable is disconnected from a Mac or PC's native Thunderbolt or USB interface and automatically spins down the drives to conserve energy during periods of inactivity. Ideal for notebook users who can go mobile without the need to turn it off or unplug the power cord.*

*This function is also available through an interface card, provided the card offers hot plug capability. LED and fan will remain on during disk inactivity.
Includes the Powerful SpeedTools Utility Suite for Mac
The comprehensive Mac utility used by professionals for accurate Mac diagnosis and maintenance. Click the SOFTWARE tab below to learn more »
The OWC Mercury Elite Series has been designed to be everything you'd hope for and more!


  • External OWC Mercury Elite Pro Dual
  • High-Quality, Certified, Double-Shielded 1 Meter (39-inch) Thunderbolt cable
  • High-Quality Double-Shielded 2' (24-inch) USB 3.0 cable (Standard-B to Standard-A, USB 2.0 compatible)
  • Kensington Security Slot
  • UL Listed U.S./International Auto Switching 100 ~ 240v, 50/60Hz input, 12 Volt 6 Amp output Power Supply (adapter plugs for International use sold separately). For replacement power supply, click here.
  • Auto-setup/partitioning utility for OS X & Windows
  • User Guide
  • Utility software bundle for Mac and PC
  • Mercury Elite Pro Dual-Drive Multi-Interface Assembly Manual (1.1MB PDF)
  • 3 Year OWC Solution Limited Warranty with 48-Hour Turnaround Time
  • Complimentary 1 Year Level 1 Data Recovery


Product Specifications:


  • Thunderbolt

Interfaces Supported

  • Thunderbolt
  • USB 3.0 (2.0 Backwards compatible)

Recommended configurations supported

  • RAID 0 – Performance Striping (default setting) for maximum performance(requires two identical hard drives).
  • RAID 1 – One drive mirrors the other for an instant backup(requires two identical hard drives).
  • Span – Combines both drives into a single, large volume.
  • Independent – Use both drives separately.*

    * 1) When the enclosure is set to Independent drive mode, only the drive in HDD2 is bootable.
    2) Independent drive mode is not fully supported by some versions of Mac OS X when connected over Thunderbolt. In Mac OS X 10.8.3 and prior, only HDD2 appears. This is a limitation of of the operating systems' support for the SATA chipset in the Mercury Elite Pro Dual. Independent drive mode does not have the limitation when used over USB.

Standard Mechanisms

  • 4.0TB Toshiba MD04ACA400 Specifications:


    Form Factor
    3.5″ HDD
    SATA 6.0Gb/s
    Formatted Capacity2
    Rotational Speed
    7,200 RPM
    Cache / Data Buffer
    Manufacturer Model Number


    Height (max)
    26.1mm (1.027″)
    Width (max)
    101.6mm (4.0″)
    Length (max)
    147mm (5.787″)
    Weight (typical)
    720g (1.587 lbs.)
    Bytes per Sector
    512 / 4096


    MTBF (Mean Time Between Failures)
    1,400,000 hours
    600,000 times
    2 Year Toshiba Limited Warranty


    Transfer Rate (Max)
    Average Seek Time
    Average Latency


    Read Power
    11.3 Watts
    Write Power
    11.3 Watts
    Idle Mode
    6.0 Watts

    Environmental (Operating)

    70 G max at 2ms
    Ambient Temperature (°F)
    32°F to 140°F
    Ambient Temperature (°C)
    0°C to 60°C
    0.75 G (5 to 500 Hz)
    Relative Humidity (non-condensing)
    8% to 90%
    -304.8 m to 3,048 m (-1,000 ft to 10,000+ ft)

    Environmental (Non-Operating)

    300 G max at 1ms
    Ambient Temperature (°F)
    -40°F to 158°F
    Ambient Temperature (°C)
    -40°C to 70°C
    1.04 G (5 to 500 Hz)
    Relative Humidity (non-condensing)
    5% to 95%
    -304.8 m to 12,192 m (-1000 ft to 40,000+ ft)


    Idle (Typical)
    3.1 bels
    1. 1GB = 1,000,000,000 bytes. Total accessible capacity varies depending upon operating environment (typically 5-10% less). The actual total capacity will depend on your own defined file settings/preferences.
    2. In terms of standard gigabytes, 1GiB ≈ 1.074GB and refers to the actual formatted capacity of shown under Mac OS 10.5 or earlier and Microsoft Windows OS.
    3. Specific application environments such as temperature and duty cycle will affect the overall reliability rates.
    2 x 4.0TB* Toshiba MD04ACA Series Hard Disk Drives**

  • *1GB = 1,000,000,000 bytes. Total accessible capacity varies depending upon operating environment (typically 5-10% less). The actual total capacity will depend on your own defined file settings/preferences.

    **OWC reserves the right to replace or upgrade to equivalent or better components.

Drive Rotation Speed

  • 7200 RPM

Drive Cache Size

  • 256 Megabyte (2 Drives with 128MB (131,072K) cache each)

Port Configuration

  • Thunderbolt – 2 ports
  • USB 3.0/2.0 – 1 USB 3.0 Standard B port

Max Data Transfer Rate

  • Thunderbolt – Up to 10Gb/sec
  • USB 3.0 – Up to 500MB/sec
  • USB 2.0 – Up to 60MB/sec

Port/Interface Bootability

    Can I use this solution as an external startup drive?
  • USB 3.0: Supported on Macs and PC's meeting minimum requirements. - Click for more info
  • USB 2.0: Supported on Macs and PC's meeting minimum requirements. - Click for more info
  • Thunderbolt: It can be used as a Thunderbolt startup drive on Macs running Mac OS X.


Macintosh System Requirements

  • USB 3.0: Macintosh with USB 3.0 interface, either built in or via USB 3.0 expander card and OS 10.6.8 or later.
  • USB 2.0: Macintosh with USB 2.0 interface, either built in or via USB 2.0 expander card and OS 10.2.8 or later.
  • Available Thunderbolt port and OS 10.6.8 or later.
  • Time Machine® Compatible: Mac OS X 10.5 (version introduced) and later.

Windows System Requirements

  • Thunderbolt: Any PC running Windows 7 Service Pack 1 or later with a Thunderbolt port. Driver required for proper installation. (ZIP 3.3 MB)
  • USB 3.0: Windows XP and later with USB 3.0 interface, either built in or via USB 3.0 expander card.
  • USB 2.0: Windows 2000 and later with USB 2.0 interface, either built in or via USB 2.0 expander card.
  • Boot Camp is is only supported using USB. The Thunderbolt certification process does not include Macs running Windows through Boot Camp.

Linux Requirements

  • Linux compatible via supported USB 3.0/USB 2.0 interfaces.

Pre-installed Backup and Utility software

Power Supply

External Case Dimensions

  • 2.8 in (W) x 9 in (D) x 5.25 in (H) (71.2mm x 228.6mm x 133.4mm)

Drive Weight (no accessories)

  • Approximately 5.5 pounds (2.5kg)

Product Manual

Operating Environment:


  • (operating) 5°C – 42°C (41°F – 107°F)
  • (non-operating) -40°C – 65°C (-40°F – 149°F)

Relative Humidity

  • (operating) 8% – 90% RH (Non-condensing)
  • (non-operating) 5% – 95% RH (Non-condensing)


  • 65G 2mS; (non-operating) 175G 2mS


  • (operating) 1.0G (5 – 300Hz)
  • (non-operating) 5.0G (5 – 500Hz)

MTBF (hours)

  • More than 300,000 power-on hours


3 Year OWC Solution Limited Warranty

The best warranty is one you never have to use, but should the need occur – OWC is proud to provide a superior level of support and warranty coverage to our customers. Even when not used, we understand the peace of mind afforded by a longer warranty period. OWC's industry leading coverage is a testament to our confidence in the reliability of the solutions that we offer. OWC solutions are engineered to demanding quality standards in order to deliver the most reliable, highest performance available on the market in each storage category.

View more information about the 3 Year OWC Solution Limited Warranty

Note: Do not disassemble or otherwise open your OWC solution prior to the conclusion of the 3 Year OWC Solution Limited Warranty period. Doing so will void the remainder of the OWC warranty.

Manufacturer provided specifications for Other World Computing p/n METB7DH8.0T UPC#: 794504340754


Prosoft Macworld 4.5 miceProsoft
Prosoft Engineering® Data Backup 3 for OS X v10.2.8 or later
Backup Made Easy. Data Backup makes it easy to backup to FireWire and USB drives, network drives, CDs and even DVDs. Make schedules so you don't need to 'think' about backing up... It does it for you.
A $59.00 Value! View detailed software info, or click here to purchase softwareseparately from solution
NovaStor NovaBACKUP® Solution for Windows®
NovaBACKUP has been helping millions of users recover from data loss and disasters for over 18 years. Feature rich, NovaBACKUP provides a powerful backup solution. Built-in support for hundreds of the most popular storage devices and a step-by-step backup and restore wizard makes NovaBACKUP extremely easy to use. Requires Windows 2000 or later.
A $49.95 Value! View detailed software info
Intech SpeedTools Utilities
Intech® SpeedTools Utilities™
Intech SpeedTools consists of a suite of utilities managed by an application which controls the launching, documentation and version control of each individual component utility, such as Disk Defrag and QuickBack. An easy-to-use installation and removal application is provided to make installation a snap, yet powerful enough to allow you to customize which utility component set you would like to create.
An $89.95 Value! View detailed software info, or click here to purchase software separately from solution
OWC 8.0TB OWC Mercury Elite Pro Dual Mfr P/N: METB7DH8.0T OWC SKU: OWCMETB7DH8.0T Multi-Interface Storage Solution 3 Year OWC Solution Limited Warranty Ships: Same Day only $599.00 Add to CartOther World Computing METB7DH8.0T In Stock, Click to Buy Now