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We recommend 2.0TB (1.0TB + 1.0TB) OWC Mercury Elite Pro Dual mini Portable RAID-1 (Mirrored) Solution. (Mfr P/N: MEMD3FH5T2.0) from Other World Computing for $242.99 as a suitable alternative.

OWC Mercury
Elite Pro Dual mini

1.0TB + 1.0TB
Preconfigured RAID-1 Mirror (2.0TB Total Drives Capacity)
Re-configurable to RAID 0, span, or independent drive modes.

Bus-Powered, Multi-Interface Storage Solution
Mac / PC / USB 2.0 & 1.1 / FireWire 800 / FireWire 400 / eSATA
  • Mac
  • PC
  • eSATA
  • FireWire 800/400
  • USB
High Performance Dual Drive, Bus-Powered Hardware RAID Data Storage/Backup with Plug & Play Convenience
With your choice of two 2.5″ Serial ATA (SATA) hard drives OR Solid State Drives (SSD), the latest Oxford chipset, and USB 2.0/FireWire 800/400/eSATA connectivity, the Mercury Elite Pro Dual mini Portable storage solution delivers up to 300MB/s data transfer speeds for demanding data storage and backup needs. All that performance resides in an impact resistant, bus powered (no AC adapter required), heat dissipating 5.6 in (D) x 6.1 in (W) x 1.1 in (H) brushed aluminum enclosure with near silent, fanless operation.
When you want high style in high performance storage, look no further than the Mercury Elite Pro Dual mini
With the highest quality drive mechanisms built into a shock resistant, portable aluminum enclosure, the Mercury Elite Pro Dual mini is ready to go wherever you need a near silent, compact A/V, Digital Photography, Professional Music, Graphics, General Data, and Time Machine ready Hardware RAID storage solution.

This model is pre-configured for RAID-1 but can be user re-configured at any time for RAID-0, Span or Independent.

RAID 0 Performance Stripe
Both drives are combined together to create a single drive volume that's much faster and provides larger capacity.

RAID 1 Mirror
Both drives are used to write two "mirrored" copies of your data at the same time to provide an instant backup copy of your data.

NRAID (Span)
Creates a larger drive by combining the capacity of two or more drives of the same or varying sizes into a larger drive volume.

Independent Mode (JBOD)
Available as an option via USB and FireWire connections, this mode lets you access each drive as an independent volume. This mode is like having two separate drives connected to your computer.

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 »


  • Mercury Elite Pro Dual mini Bus-Powered, Multi-Interface Compact Enclosure
  • High Quality Double Shielded eSATA connecting cable
  • High Quality Double Shielded FireWire 800 connecting cable (9-9 Pin cable)
  • High Quality Double Shielded USB 2.0/1.1 connecting cable
  • FireWire 800 to 12 Volt Power Cable (For optimum results when using eSATA data connection)
  • Smart Power switch - in switched on position, unit powers up and down in tandem with computer
  • Pre-installed Backup and Utility software
    • Intech® SpeedTools Utilities™ OEM (For Mac OS 8.6 - X only)
    • Prosoft Engineering® Data Backup for Mac OS X v10.2.8 or later
    • NovaStor NovaBACKUP® for Windows 2000 or later
  • Over 1.5GB of Freeware/Shareware/Public domain software pre-installed
  • Mercury Elite Pro Dual mini Manual (3.8MB PDF)
  • OWC 3 Year Solution Warranty with 48-Hour Turnaround Time
  • Complimentary 6 Month Level 1 Data Recovery


  • Uses TWO 2.5″ SATA type hard disks or solid state drives
  • Oxford 946DSE Chipset
  • Hardware RAID Modes: 0, 1, or NRAID (Span & Independent)
  • System status LEDs
  • Near silent fanless operation
  • Heat dissipating anodized aluminum enclosure
  • Ultra-protective Shock Isolation System
  • Bus Powered Design through FireWire ports
Note: eSATA connection requires FireWire bus power or external power supply and USB port requires external power supply


Product Specifications:

Drive Type

  • Two paired (identical) 2.5″ SATA devices

Bridge Chipset

  • Oxford 946DSE chipset with eSATA, FW400(1394A), FW800(1394B), and USB 2.0

Standard Mechanism

    1.0TB HGST Travelstar 5K1000 Specifications:


    Form Factor
    2.5″ HDD
    SATA 6.0Gb/s
    Formatted Capacity2
    Rotational Speed
    5,400 RPM
    Cache / Data Buffer
    Manufacturer Model Number
    RoHS Compliant


    Height (max)
    9.5mm (0.370″)
    Width (max)
    69.85mm (2.750″)
    Length (max)
    100.35mm (3.951″)
    Weight (typical)
    115g (0.253 lbs.)
    Bytes per Sector
    Areal Density


    Contact Start-Stops
    3 Year HGST Warranty


    Transfer Rate (Max)
    Track-to-track Seek
    Average Seek Time
    Average Latency


    Maximum Start Current, DC
    4.5 Watts
    Seek Power
    1.8 Watts
    Read Power
    1.6 Watts
    Write Power
    1.6 Watts
    Idle Mode
    1.5 Watts
    Idle Mode, Active
    0.8 Watts
    Idle Mode, Low Power
    0.5 Watts
    Standby Mode
    0.2 Watts
    Sleep Mode
    0.1 Watts

    Environmental (Operating)

    400 G max at 2ms
    Ambient Temperature (°F)
    32°F to 140°F
    Ambient Temperature (°C)
    0°C to 60°C
    -304.8 m to 3,048 m (-1,000 ft to 10,000+ ft)

    Environmental (Non-Operating)

    1000 G max at 1ms
    Ambient Temperature (°F)
    -40°F to 149°F
    Ambient Temperature (°C)
    -40°C to 65°C
    -304.8 m to 12,192 m (-1000 ft to 40,000+ ft)


    Idle (Typical)
    2.4 bels
    Seek (Typical)
    2.6 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 1.0TB* Hitachi Travelstar™ 5K1000 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

  • 5400 RPM

Drive Cache Size

  • 16 Megabyte (2 Drives with 8MB (8,384k) cache each)

Maximum Data Transfer Rate

  • eSATA - 3.0Gbps (or 300MB/sec)
  • FireWire 800 - 800Mbps (or 100MB/sec)
  • FireWire 400 - 400Mbps (or 50MB/sec)
  • USB 2.0 - 480Mbps (or 60MB/sec)

Port/Interface Bootability

    Can I use this solution as an external startup drive?
  • eSATA: Supported on Macs and PC's meeting minimum requirements. - Click for more info
  • FireWire 800: Supported on Macs and PC's meeting minimum requirements. - Click for more info
  • FireWire 400: 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

Macintosh System Requirements

  • Mac OS 8.6 to 9.2.2 compatible, OS X 10.1.x and later. Including 'Mavericks' 10.9.x (10.2 or later required for FW800 and USB 2.0)
  • eSATA: Macintosh with eSATA interface, either built in or via PCI eSATA card.
  • FireWire 800: Macintosh with FireWire 800 interface, either built in or via PCI FireWire 800 card.
  • USB 2.0: Macintosh with USB 2.0 interface, either built in or via PCI USB 2.0 card.
  • Time Machine® Compatible: Mac OS X 10.5 (version introduced) and later.

Windows System Requirements

  • Windows ME and later.
  • Windows 2000 or later required for FW800 Operation.

Linux Requirements

  • Linux compatible via supported USB and FireWire interfaces.

Selectable RAID Modes

  • RAID 1 (Mirror) (factory default)
  • RAID 0 (Stripe)
  • NRAID (Span)
  • NRAID Independent Mode (Not available when utilizing eSATA interface)

Power Supply

  • Bus Power via FireWire 800 supported on all models equipped with an available FireWire 800 port either factory stock or via add on FireWire 800 PCI Card.
  • Optional AC Adapter* (available as a separate purchase here)

  • * AC adapter not required for most applications provided computer bus supplies appropriate power needs.


Software Included

Enclosure Size

  • 5.6″(D) x 6.1″(W) x 1.1″(H)
  • 14.4 cm x 15.4 cm x 2.8 cm

Enclosure Weight (no accessories)

  • 1.80lbs. (0.81kg)

Product Manual

Operating Environment:


  • (operating) Up to 0°C - 70°C (32°F - 158°F)
  • (non-operating) Up to -40°C - 85°C (-40°F - 185°F)

Relative Humidity

  • (operating) Up to 5% - 90% RH (Non-condensing)
  • (non-operating) Up to 5% - 95% RH (Non-condensing)


  • Up to 1500G


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


  • More than 300,000 power-on hours


OWC 3 Year Solution 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 OWC 3 Year Solution warranty

Note: Because the OWC Mercury Elite Pro Dual mini offers three selectable RAID levels, your warranty coverage remains intact if you open the back plate to access the RAID dip switches only. For instructions on changing the RAID level from the preconfigured factory setting, please refer to the product manual.

Do not further disassemble or otherwise remove any components, including the drive mechanisms, on this OWC storage solution prior to the conclusion of OWC's 3 year Warranty period. Doing so will void the remainder of the OWC warranty.

Manufacturer provided specifications for Other World Computing p/n MEQMHM5S20TB


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 1.0TB + 1.0TB Preconfigured RAID-1 Mirror (2.0TB Total Drives Capacity) Mercury Elite-AL
Pro Dual mini
Mfr P/N: MEQMHM5S20TB OWC SKU: OWCMEQMHM5S20TB Multi-Interface RAID 1 Storage Solution 1 Year OWC Limited Warranty
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