OWC Gemini Dual-Bay Thunderbolt 3 Dock and RAID External Storage Enclosure 16TB

SKU: OWCTB3GMH16 MFR: OWCTB3GM000H16
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Key Features

  • Experience rapid data transfers with Thunderbolt 3, reaching speeds up to 40Gb/s for efficient workflows.
  • Configure RAID levels (0, 1, SPAN, JBOD) for customized data redundancy and optimized storage solutions.
  • Utilize the Gemini as a robust hard drive array, ideal for media professionals needing reliable storage.
  • Enjoy versatile connectivity with USB 3.2, HDMI, and 2.5 Gigabit Ethernet ports for all your devices.
  • Expand your workstation with up to 48TB of storage capacity, perfect for large video and photo libraries.
  • Charge your laptop with 27W power delivery via Thunderbolt 3, reducing clutter and keeping you powered.
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Temporarily On Backorder?Expected Availability: 09/2025
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1 Year

$84.99

2 Year

$139.00

3 Year

$209.00

Available to U.S. customers only.

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Review Summary

OWC Gemini Dual-Bay Thunderbolt 3 Dock and RAID External Storage Enclosure Specifications

  • Available Capacities

    4TB, 8TB, 12TB, 16TB, 24TB, 32TB, 40TB, 48TB

  • Color

    Black

  • Material

    High quality aluminum for optimized heat dissipation

  • Drive Bays

    2 bays supporting: 2.5" SATA HDDs, 2.5" SATA SSDs, 3.5" SATA HDDs, 3.5" SATA SSDs, 2.5" U.2 SSDs, 3.5" U.2 SSDs, M.2 SSDs (with M.2 to U.2 adapter)

  • Total Solution Cache Size

    4TB, 8TB, 12TB, 16TB: 512 MB
    24TB, 32TB, 40TB: 1024 MB
    48TB: 2048 MB

  • Drive Mechanism

    4TB: 2x 2.0TB Western Digital WD Blue 7,200RPM Hard Disk Drive with 256 MB cache
    8TB: 2x 4.0TB Toshiba MD08ADA Series 7,200RPM Hard Disk Drive with 256 MB cache
    12TB: 2x 6.0TB Toshiba MD08ADA Series 7,200RPM Hard Disk Drive with 256 MB cache
    16TB: 2x 8.0TB Toshiba MG08-D Series 7,200RPM Enterprise Class Hard Disk Drive with 256 MB cache

  • Drive Mechanism (Contd.)

    24TB: 2x 12.0TB Toshiba MG09ACA Series 7,200RPM Enterprise Capacity Hard Disk Drive with 256 MB cache
    32TB: 2x 16.0TB Western Digital Ultrastar DC HC550 7,200RPM Enterprise Class Hard Disk Drive with 256 MB cache
    40TB: 2x 20.0TB Toshiba MG10 Series 7,200RPM Enterprise Class Hard Disk Drive with 256 MB cache
    48TB: 2x 24.0TB Toshiba MG11 Series 7,200RPM Enterprise Capacity Hard Disk Drive with 1024 MB cache

  • Hot Plug Support

    Yes

  • Boot Support

    Yes. Boot Camp is not supported

  • RAID Capable

    Yes

  • RAID Levels Supported

    SPAN
    RAID 0
    RAID 1
    JBOD

  • RAID Features

    Hardware RAID
    Software RAID Capable

  • Device Ports

    1x Host Port - Thunderbolt 3 (USB-C) up to 40Gb/s (5000MB/s)
    1x Thunderbolt 3 (USB-C) Port
    2x USB 3.2 Gen 2 Type-A Ports up to 10Gb/s (1250MB/s) - USB 2.0/3.0 backwards compatible
    1x HDMI Port
    1x 2.5 Gigabit Ethernet (2.5GbE) RJ45 Port

  • Memory Card Slots

    1x SD

  • Power Delivery

    Provides up to 27 watts of power via Thunderbolt 3 to charge or reduce laptop and device battery draw

  • UASP Support

    UASP (USB Attached SCSI Protocol) is supported

  • Display Support by Port

    Thunderbolt 3 (Titan Ridge): Up to 8K @ 60Hz or 4K @ 120Hz via a native Thunderbolt 3 display or other display that supports USB-C connections and DisplayPort 1.4
    HDMI 2.1: Up to 8K @ 120Hz

  • Ethernet Speeds (RJ-45)

    2.5Gb/s (2.5GBASE-T)
    1Gb/s "Gigabit" (1000BASE-T)
    100Mb/s (100BASE-T)
    10Mb/s (10BASE-T)

  • Jumbo Frame Support

    Yes

  • Data Rate

    Up to 40 Gb/s

  • Data Transfer Rate (Maximum)

    Thunderbolt 3 : Up to 40Gb/s (or 5000MB/s)
    USB 3.2 Gen 2 : Up to 10Gb/s (or 1250MB/s)

  • Chipset / Controller

    Thunderbolt (2): Intel JHL7440
    Media Reader: Genesis Logic GL-3232S
    Ethernet (1): Intel i226
    SATA Controller: ASMedia ASM-1352R

  • MTBF (Mean Time Between Failures)

    Varies depending on drive mechanism installed

  • Contact Start Stops

    Varies depending on drive mechanism installed

  • Host Interface Requirements

    Thunderbolt (USB-C) port (backward compatible with Thunderbolt 2/Thunderbolt)

  • Mac OS Compatibility

    macOS 12.x Monterey
    macOS 13.x Ventura
    macOS 14.x Sonoma
    macOS 15.x Sequoia

  • PC OS Compatibility

    Windows 10 64-bit Edition
    Windows Server 2016
    Windows Server 2022
    Windows 11

  • Linux OS Compatibility

    Yes

  • Mobile OS Compatibility

    iPadOS 15
    iPadOS 16
    iPadOS 17
    iPadOS 18

  • Other OS Compatibility

    Chrome OS
    ChromeOS 107 or later

  • Driver Required

    Yes
    Windows 10 and Windows 11 users utilizing the OWC Gemini (2.5GbE) Ethernet require a network driver
    Intel Network Adapter Driver for Windows 10
    Intel Network Adapter Driver for Windows 11

  • Supports OWC ClingOn

    4TB, 8TB, 12TB, 16TB, 24TB, 32TB: Yes

  • External Power Adapter

    Yes

  • Power Supply

    External UL-listed universal auto-switching power supply

  • AC Input

    100-240V, 50-60Hz, 2.0A

  • DC Output

    +12V, 10A

  • Wattage

    120W

  • Cooling

    1x 60mm 3,000RPM cooling fan

  • Security Slot

    Yes

  • Power/Activity LED

    Yes

  • Certifications

    CE
    FCC
    VCCI
    BSMI
    RCM
    Thunderbolt technology

  • RoHS Compliant

    Yes

  • Ambient Temperature

    Operating: 41 degree F to 95 degree F (5 degree C to 35 degree C)
    Non-Operating: -4 degree F to 140 degree F (-20 degree C to 60 degree C)

  • Altitude

    Operating: -1,000' to 10,000' (-304.8m to 3,048m)
    Non-Operating: -1,000' to 40,000' (-304.8m to 12,192m)

  • Humidity

    Operating: 8% to 90% non-condensing
    Non-Operating: 5% to 95% non-condensing

  • Shock

    4TB:
    Operating: Varies depending on drive mechanism installed
    Non-Operating: Varies depending on drive mechanism installed

  • Noise

    19.3dB

  • Dimensions (H x L x W)

    5.8 x 9.4 x 3.3" (14.7 x 23.8 x 8.5cm)

  • Weight

    4TB: 5.51 lbs (2.5kg)
    8TB, 12TB, 16TB, 24TB, 32TB, 40TB, 48TB: 3.53 lbs (1.6kg)

  • UPC Code

    810159627894

About OWC Gemini Dual-Bay Thunderbolt 3 Dock and RAID External Storage Enclosure

The Do-It-All Tool for Digital Workflows
With dual drive bays and seven connectivity ports including an SD 4.0 (UHS-II) card reader, the OWC Gemini is the do-it-all tool that will organize your digital life. You'll have plenty of room to duplicate footage, create and manage archives, or render and process effects. Connect your favorite peripherals via USB ports. Ingest the day's shoot or drone footage with the frontside reader.

Hardware RAID: Speed, Reliability, Flexibility
The OWC Gemini utilizes hardware RAID to unleash the full potential of two 3.5-inch 7200RPM hard drives or 2.5-inch SATA SSDs. Preconfigured in high-speed RAID 0 mode to deliver maximum throughput from its drives, Gemini offers real-world HDD speeds up to 562MB/s for audio editors/musicians/producers, individual content creators, photographers, small photography studios, and filmmakers working with up to 4K resolutions and compressed codecs. A/V professionals seeking SSDs that start and stay fast over their full capacity can take advantage of the proven reliability of OWC Mercury Extreme SSDs. With sustained RAID 0 speed up to 956MB/s, you can easily handle 8K single and 4K multi sequences, slow motion video, 10 bits footage, and ultra-high-resolution RAW pictures.

If you desire the extra security of mirrored data, you can configure the Mercury Gemini in RAID 1 mode. Need more drive flexibility? Set up a span to combine the capacity of the two drives into one huge volume or use the drives as independent volumes.

Stay Connected to Your Team and Media
The OWC Gemini features a 2.5Gb/s Ethernet port so you can transfer files and work up to 2.5x faster over wired networks and enjoy increased productivity in an IP-based workflow. Great for shared workspaces and workflows, file transfers breeze by quickly so you spend less time setting up and more time getting to work. When it's time to share your progress, you can use your RAID options to render out working files and a fast connection to post for team and client reviews. It's also great for sending your files over to a NAS to keep them safely archived.

Gain a 8K Perspective
With a dedicated latest generation HDMI port, Gemini empowers you to add the fresh, crisp perspective of an 8K display to your workflow. Whether in your home office or on a mobile studio job, seeing your work in full detail is just one connection away. Use it to free up your laptop port, so you can dock in and out quickly and stay mobile.

Reclaim Your Desktop
With multi-drive media dumps, controllers, A/V outputs, and a mess of device cables, it can be hard enough to find space for your notebook let alone room to work. OWC Gemini fights the clutter with a single-cable connection that delivers storage, Ethernet sharing, charging power, and 8K monitor support while neatly consolidating all your peripheral device cables. Reclaim your workspace and reduce your stress.

Finally, a RAID as Mobile as Your Life
With the built-in hardware-based RAID controller, you get speed and security without being dependent on what operating system you are running. If you work in a cross-platform world, you can easily connect OWC Gemini to Mac and PC using OWC's MacDrive software (sold separately).

Unleash iPad Pro Content Creation Capabilities
For all the power iPad Pro offers, it's handcuffed by limited internal storage, display size. and a single Thunderbolt port. Gemini transforms the iPad Pro into a complete content creation platform with capabilities that exceed many desktop and notebook computer setups. Offload your internal storage to the multi-terabytes of SSD storage capacity with speeds up to 956MB/s to handle all your Davinci Resolve, Lumafusion, Lightroom, Photoshop, Capture One, and/or Illustrator projects. You'll see your work easier by adding an external display via the HDMI port. Ingest your camera files with the SD card reader. Share files in a blink on a high-speed network. Connect a mouse and full-sized keyboard with USB ports. There's even 27W of power delivery to keep your iPad Pro charged and ready for mobile use.

Thunderbolt Made Easy
We make it easy to choose the right gear. Our Thunderbolt Certified products offer the same performance and functionality whether they are Thunderbolt 3 or Thunderbolt 4. And if you're rocking a beloved Thunderbolt 2 machine, we offer a certified Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter so you can plug into our universe of award-winning solutions. No hassles, no confusion. That's the OWC Difference.

Disconnect in One Click
Safely disconnect multiple drives in a single click. OWC Dock Ejector was designed by OWC hardware and software engineers to ensure all data is written before disconnection, saving time and protecting against data loss. It makes losing your hard-earned work a thing of the past.

OWC Thunderbolt Cable Included
OWC Gemini comes with a certified 0.7M OWC Thunderbolt Cable. But if your workflow demands a different length to make the connection, OWC Thunderbolt (USB-C) Cables are the perfect choice.

Work with Ultimate Confidence
Active workspaces expose gear to unexpected bumps and shoves. OWC ClingOn custom cable stabilizers (sold separately) screw into the OWC Dock or OWC Drive housing to reduce - if not completely eliminate - cable strain on Thunderbolt and USB-C connections so you can work with ultimate confidence even in the highest foot traffic environments.

Innergize Your Workflow with Highest Performance and Reliability
OWC Innergize is the first stage of the Capture to Completion ecosystem of OWC products designed to seamlessly propel professional photographers, videographers, and content creators to the highest level of workflow performance and reliability. This OWC custom-designed app is a complete health, performance, and field upgrade management tool when using OWC Atlas memory cards with OWC Atlas readers and reader equipped products.

Work with Maximum Confidence and Reliability

Health
Over time and use cycles, flash memory does wear out. Innergize verifies and reports the percentage of use life remaining. Now you can work with full confidence your OWC flash memory product will deliver the reliability you can trust.

Sanitize
Writes, deletes, and formatting all take their toll on memory cards. Innergize cleans and restores the flash memory performance of OWC memory cards so you can get the best results on every use.

Field Upgrade
When new cameras or firmware updates to existing cameras are introduced, they may not work properly with flash memory cards and drives. Innergize gives OWC memory card users the ability to quickly upgrade their firmware in the field for full compatibility, additional performance enhancements, and bug fixes for optimal reliability.

OWC Gemini Dual-Bay Thunderbolt 3 Dock and RAID External Storage Enclosure Features

  • Performance storage: Up to 562MB/s
  • Fast connectivity: 2x Thunderbolt 3 ports (Thunderbolt 2/Thunderbolt backward compatible)
  • Speed and storage: Hardware RAID controller (RAID 0,1, Span or JBOD/Independent)
  • Easy camera uploads: Frontside SD 4.0 (UHS-II) card reader
  • A hub of options: 2x USB 3.2 (10Gb/s) Type-A ports
  • Connect to your NAS: 2.5Gb/s Ethernet port
  • See work in progress: HDMI 2.1 for adding up to an 8K monitor
  • Innergize enabled: Custom OWC software for complete health, performance, and field upgrade management when using OWC Atlas Memory Cards with OWC Atlas Card Readers and card reader-equipped products

Warranty Information

This product has a limited warranty of 36 months.

Product Documents

User Manual

Key Features

  • Experience rapid data transfers with Thunderbolt 3, reaching speeds up to 40Gb/s for efficient workflows.
  • Configure RAID levels (0, 1, SPAN, JBOD) for customized data redundancy and optimized storage solutions.
  • Utilize the Gemini as a robust hard drive array, ideal for media professionals needing reliable storage.
  • Enjoy versatile connectivity with USB 3.2, HDMI, and 2.5 Gigabit Ethernet ports for all your devices.
  • Expand your workstation with up to 48TB of storage capacity, perfect for large video and photo libraries.
  • Charge your laptop with 27W power delivery via Thunderbolt 3, reducing clutter and keeping you powered.

What's in the box:

  • OWC / Other World Computing Gemini Dual-Bay Thunderbolt 3 Dock and RAID External Storage Enclosure
  • 0.7m Thunderbolt USB-C Cable
  • External Power Supply and Power Cable
  • Dock Ejector for Mac and Windows (Software Download)
  • User Manual
  • OWC / Other World Computing 3 Year Limited Warranty