Free Shipping available on most orders $49.00 & up.

Get Details. »

OWC

Mercury Elite Pro Dual mini
4.0TB Bus-Powered Storage Solution

Mac / PC / Chrome / USB 3.1 Gen 2
Portable RAID Powerhouse
Mercury Elite Pro Dual mini is the latest high-performance portable RAID from OWC. Packing dual-drive, USB 3.1 Gen 2 performance into a portable, bus-powered form factor, this is the perfect drive for high demand applications on the go. With ample capacities, no matter where you are, Elite Pro Dual mini delivers the performance and flexibility to meet the most extreme workflow requirements for pros working with rich media content.
RAID for Redundancy. RAID for Performance.
Mercury Elite Pro Dual mini features easily user selectable modes RAID 0 and RAID 1. Choose the configuration that suits your needs. In RAID 0, experience blistering data transfer speeds up to 738MB/s. Or select RAID 1 for greater data redundancy from mirrored disks.
Good Looks meet Great Design.
A rugged aluminum chassis designed for near silent fanless, cooling, keeps your drives protected, cool and quiet everywhere you go. The slimline, side-by-side configuration means Mercury Elite Pro Dual mini fits easily in your laptop or gear bag. And because it's fully bus-powered, Mercury Elite Pro Dual mini is the perfect solution for your portable creative workflow.
Quality You Can Trust
Like all OWC drives, Mercury Elite Pro Dual mini is built to the highest standards of reliability and performance. Because 100% reliability is always the goal, Mercury Elite Pro Dual mini is rigorously quality tested, and backed by an OWC 3 year limited warranty and 24/7 customer support.

Product Specifications:

Software Requirements

  • OS (USB 3.1 Gen 1)
    • OS X 10.7 or later
    • Windows 7 or later
    • Chrome OS
  • OS (USB 3.1 Gen 2)
    • macOS 10.12 or later and Thundebolt 3 interface
    • Windows 8.1 or later
    • Chrome OS
  • Driver
    • Driver not required for OS X
    • Driver not required for Windows
    • Driver not required for Chrome

Hardware Requirements

  • Minimum
    • Mac or PC with a USB 3.1 Gen 1 port (Standard-A or Type-C)
  • Recommended (Best Performance)
    • Mac or PC with a USB 3.1 Gen 2 Type-C port

Bootability 1, 2

  • OS X 10.7 or later

Interface (Chipset) 3

  • (1) USB 3.1 Gen 2 / SATA RAID Controller (ASMedia ASM1352R)

UASP (USB Attached SCSI Protocol) Compliant

  • Yes

Standard Mechanism

  • 2.0TB Micron 1100 Series Specifications:

    Specifications

    Form Factor
    2.5" 7mm (Ultraslim)
    Interface
    SATA 6Gb/s
    Capacity1
    2048GB
    Formatted Capacity2
    1863GiB
    NAND
    3D TLC NAND Flash
    SMART Attributes
    SMART command set support
    Manufacturer Model Number
    MTFDDAK2T0TBN-1AR1ZABYY
    RoHS Compliant
    Yes
    Format

    Physical

    Height (max)
    7mm (0.275″)

    Reliability3

    MTBF (Mean Time Between Failures)
    1,500,000 hours

    Performance

    Sequential Read (up to)
    530MB/s
    Sequential Write (up to)
    500MB/s
    Random Read
    Up to 55,000 IOPS
    Random Write
    Up to 83,000 IOPS

    Power

    Maximum Start Current, DC
    5V
    Seek Power
    0.15 Watts
    Idle Mode
    0.11 Watts
    Sleep Mode
    0.025 Watts

    Environmental (Operating)

    Ambient Temperature (°F)
    32°F to 158°F
    Ambient Temperature (°C)
    0°C to 70°C
    Altitude
    -304.8 m to 3,048 m (-1,000 ft to 10,000+ ft)

    Environmental (Non-Operating)

    Ambient Temperature (°F)
    -40°F to 185°F
    Ambient Temperature (°C)
    -40°C to 85°C
    Vibration
    3.1 Gs (0 to peak, 5-800 Hz)
    Altitude
    -304.8 m to 12,192 m (-1000 ft to 40,000+ ft)
    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 2.0TB* Micron 1100 Series NAND Solid-state 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.

RAID Modes Supported

  • Hardware
  • RAID 0, 1, SPAN, and Independent drive mode

Initial Configuration

  • RAID 0
  • Included Drive Guide software will format the drive for either OS X or Windows

Power

  • Power Supply
    • External UL-listed universal auto-switching
    • AC input: 100 ~ 240V, 50/60Hz
    • DC output:, 12V @ 3A
    • Replacement power supply sold separately
    • Adapter plugs for international use sold separately

Environment

  • Environmental (Operating)
    • Temperature (°F) 32° — 107°
    • Temperature (°C) 0° — 42°
  • Environmental (Non-Operating)
    • Temperature (°F) &min;40° — 185°
    • Temperature (°C) &min;40° — 85°

Dimensions

  • Height: 28 mm (1.1 in)
  • Width: 155 mm (6.1 in)
  • Length: 144 mm (5.7 in

Weight (without drives)

  • 0.6 kg (1.25 lbs.)
1. Booting in RAID 0, RAID 1, and SPAN mode are supported without limitation.

2. The following limitations apply when booting in Independent mode: only the disk connected to Port 2 is bootable when both drives are installed. If only one drive is installed, the disk will boot regardless of which port it is connected to. Please check the Assembly Manual & User Guide for more details.

3. If connecting from a computer with USB 3.1 Gen 1 via Standard-A to USB-C adapter cable, the device will function at USB 3.1 Gen 1 speeds. Currently the Mercury Elite Pro Dual mini is not compatible with the USB-C port on the OWC USB-C Dock. Please connect to one of the USB Standard-A ports instead. Performance is identical on all USB ports on the USB-C Dock.
Manufacturer provided specifications for Other World Computing p/n MEMDC2SSM4.0

Gallery

Includes

  • Mercury Elite Pro Dual mini portable high-performance enclosure
  • 0.5m (18 in) USB Type-C to Type-C cable
  • 0.5m (18 in) USB 3.1 Gen 1 Standard-A to Type-C cable
  • External power supply and power cable1
  • Quick Start Guide
  • Assembly manual & user guide (Download Only)

1. May be required for certain older (pre-2012 Macs and various PCs) USB 2.0/3.0 Type A models which may not provide the necessary power via bus.

Customer Ratings

Write a Review 5 / 5 2 out of 2 (100%) reviewers would recommend this product
Verified Buyer
Reviewer: John4G Location: Richmond, VA Age: 55-65 Experience Level: Home User Owned Product: 1-3 months
Rating: 5/5 great compact RAID external HD January 8, 2018 The device is compact, and runs off my Macbook USB-C port. Very good write speeds, and the RAID 1 capability gives me great security against single drive failure. It also comes with a comprehensive suite of backup and maintenance software. An excellent deal for the price!

I would recommend this item to a friend! This review is from 4.0TB OWC Mercury Elite Pro Dual mini Portable, Performance USB C RAID Solution. Customer Videos:

Verified Buyer
Reviewer: whitby Location: Austin, Texas Age: Over 65 Experience Level: Power User Owned Product: 1-3 months
Rating: 4/5 Nice product with excellent performance July 15, 2017 This is a tricky product to set up, but once you work through the configuration it works exactly as advertised.

Fast and will actually work bus powered even though you are warned against it.

I would recommend this item to a friend! This review is from OWC Mercury Elite Pro Dual mini bus-powered USB 3.1 Gen 2 RAID Storage Enclosure. Customer Videos:

Verified Buyer
Reviewer: pcsnet Location: St. Louis Age: Over 65 Experience Level: IT Professional Owned Product: less than a month
Rating: 5/5 Great product and Great Customer Service June 29, 2017 I received an email yesterday about the garage sale. I saw the drive enclosure. There was only one available. Ordered yesterday morning and it arrived today at noon.

It was easy to setup. I added my own drives.The enclosed instruction sheet said that OWC software should pop-up. It didn't. I formatted it using Disk Utility. All set for Raid 0. Ran speed tests. Great results.

I would recommend this item to a friend! This review is from (*) OWC Mercury Elite Pro Dual mini bus-powered USB 3.1 Gen 2 RAID Storage Enclosure. Customer Videos:

Verified Buyer
Reviewer: lastcookie Location: Sarasota Age: 55-65 Experience Level: IT Professional Owned Product: over 6 months
Rating: 4/5 Very good - one portability issue June 7, 2017 This is a very nice, compact, raid solution. The case is very well built and performance is excellent. My only criticism is the power switch: it is very tiny and recessed making it a real challenge to reach behind and get a fingernail to catch it. No fingernails and you will be reaching for a tool to power it down.

This is only an issue, IMO, if you plan to move the drive frequently, which I do. Since it is described as being portable I think this is a fair criticism. With a more accessible switch this drive would get my 5 stars,

I would recommend this item to a friend! This review is from 2.0TB 7200RPM OWC Mercury Elite Pro Dual mini Portable, High-Performance USB C RAID Solution. Customer Videos:

Verified Buyer Top 50 Contributor
Reviewer: joevt Location: Langley, B.C. Age: 35-44 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 Excellent quality and performance March 8, 2017 I wanted to buy a drive that can perform faster than 5 Gb/sec. This USB 3.1 gen 2 device does just that.

I've tested this in macOS Sierra. The Apple drivers in Mac OS X El Capitan do not support 10 Gb/sec.

I've connected this device to a AlpineRidge Thunderbolt 3 controller. No issues there.

I've connected this to a ASMedia 1142 PCIe card from Startech. Half the time, System Information.app would say the speed was "Up to 480 Mb/sec". When this happened, the drive performed at USB 2.0 speeds. The other times, it says "Up to 5 Gb/sec" but the benchmarks I tried showed that it was doing more than 5 Gb/sec. Windows 10 had similar issues, but would sometimes show the connection as 10 Gb/sec. I tried two different USB-C cables (one was a Thunderbolt 3 cable). This may be an issue with the ASMedia chip in general, my PCIe card specifically, Apple's XHCI driver, or a combination. I only have one PCIe card and this one USB 3.1 Gen 2 device to test.

I used Black Magic Disk Speed Test.app to test the speed. This will get you some quick ballpark numbers:

USB 2.0 speed: 41.5 MB/s Write, 41.8 MB/s Read USB 3.0 speed: 411.2 MB/s Write, 428.0 MB/s Read USB 3.1 Asmedia 1142: 710.1 MB/s Write, 784.3 MB/s Read USB 3.1 AlpineRidge: 756.3 MB/s Write, 836.5 MB/s Read

Those numbers were from a Skylake PC (4.6 GHz). The USB 3.1 speed was slightly slower in a Mac Pro 2008 using the Asmedia 1142 PCIe card: 660.3 MB/s Write, 740.5 MB/s.

For the SSD's, I used two 1.0TB Mercury Extreme Pro 6G.

I would recommend this item to a friend! This review is from OWC Mercury Elite Pro Dual mini bus-powered USB 3.1 Gen 2 RAID Storage Enclosure. Customer Videos:

Verified Buyer Top 250 Contributor
Reviewer: shortimer Location: Ellington, Connecticut Age: 55-65 Experience Level: Power User Owned Product: 1-3 months
Rating: 5/5 RAID done right (USB-C) February 1, 2017 Another well designed product from OWC. Returned two tries with a LaCie Rugged RAID 4TB, which is TB2. This USB-C product from OWC just works. The price AND speed w/ RAID is the best per gigabyte compromise available at this moment. Obviously, this is in conjunction w/ the new MBpro design that only has USB-C ports. Highly recommended, because there just aren't many/any choices out there for bus powered 220mbps speed @ 4TB of memory.

I would recommend this item to a friend! This review is from 4.0TB OWC Mercury Elite Pro Dual mini Portable, Performance USB C RAID Solution. Customer Videos:

OWC Mercury Elite Pro Dual mini 4.0TB Bus-Powered Storage Solution Mfr P/N: MEMDC2SSM4.0 OWC SKU: OWCMEMDC2SSM4.0 Dual bay USB 3.1 Gen 2 equipped bus-powered RAID solution 3 Year OWC Limited Warranty Ships: Same Day only $1,149.99
Add to CartOther World Computing MEMDC2SSM4.0 In Stock, Click to Buy Now
Additional Capacities: Add Your Own Drives
  • 0GB
    • Ships: Same Day
    • Only $99.95
    • OWC Price $89.99
w/ Hard Drives
  • 1.0TB
    • Ships: Same Day
    • Only $249.99
    • OWC Price $219.99
  • 2.0TB
    • Ships: Same Day
    • Only $279.99
    • OWC Price $249.99
  • 4.0TB
    • Ships: Same Day
    • Only $329.99
    • OWC Price $279.99
w/ SSDs
  • 240GB
    • Ships: Same Day
    • Only $269.99
    • OWC Price $249.99
  • 480GB
    • Ships: Same Day
    • Only $379.99
    • OWC Price $329.99
  • 1.0TB
    • Ships: Same Day
    • Only $549.99
    • OWC Price $499.99
  • 2.0TB
    • Ships: Same Day
    • Only $879.99
    • OWC Price $799.99
  • 4.0TB