OWC ThunderBay 4 mini

OWC ThunderBay 4 Mini Hero OWC ThunderBay 4 Mini Hero Left OWC ThunderBay 4 Mini Front OWC ThunderBay 4 Mini with Thunderbolt 2 Back

OWC ThunderBay 4 mini


Reach speeds up to 1346MB/s


Pre-configured solutions offer up to 16TB of storage capacity

Quick Specs:

  • Thunderbolt 2
  • 4 Drive Bays
  • SoftRAID
  • Mac & Windows

4-Bay 2.5-inch Drive Thunderbolt 2 Storage Solution

  • Retasks/maximizes SSD potential: four 2.5-inch drive bays
  • Pro-grade speeds: up to 1346MB/s with (2) Thunderbolt 2 ports (Thunderbolt 10Gb/s backward compatible)
  • Daisy-chain expansion: add up to five additional Thunderbolt devices
  • Deployment ready: solutions undergo rigorous multi-hour drive burn-in
  • Near silent operation: heat dissipating aluminum with 32.5dB cooling fan
  • Available with SoftRAID: robust software for creating, monitoring, and managing advanced RAID sets
  • Worry free: up to 3 Year OWC Limited Warranty1

  • Performance & reliability at an exceptional value

  • Wide array of model configurations

  • OWC storage solutions consistently receive top ratings

  • Industry-leading warranty & support. Get help »

OWC ThunderBay 4 Mini Thunderbolt 2 Open with Pencil

Big RAID System Performance in a Compact Design

With four 2.5-inch drive bays, ThunderBay 4 mini transforms SSDs and HDDs into a pro-grade, Thunderbolt 2 storage solution in a compact design. ThunderBay 4 mini is about the length of a pencil and weighs only 3.1 pounds — with SSDs.

The rugged heat-dissipating aluminum enclosure features two Thunderbolt 2 ports (Thunderbolt 10Gb/s backward compatible) for up to 1346MB/s speeds, so you can breeze through personal and business backups all the way up to today's highest resolution audio, photo and video formats.

Use mixed drives independently or combine drives as a RAID with the included SoftRAID setup and management software. Add your own drives or choose from pre-configured solutions that are multi-hour "burn-in" test certified.

OWC ThunderBay 4 Mini Daisy Chain Infographic

Store More, Go Faster

With the ability to daisy-chain, you can add up to five additional ThunderBay 4 mini solutions to create massive storage capacities. Merge them with SoftRAID for even more flexibility, capacity, and capability. Or if speed is what you’re after, connect multiple ThunderBay 4 mini solutions to multiple Thunderbolt 2 ports on your Mac or PC to achieve exponential speed capabilities.

The Most Powerful RAID Tool on the Planet.

SoftRAID is the world’s fastest and most flexible application to configure, maintain, and protect your RAID volumes on Mac and PC. OWC enclosures include 3 Years of SoftRAID Premium.

  • High-Performance RAID 0/1/4/5/1+0 (10) volumes
  • Predictive Health Monitoring proactively notifies of Volume and Disk issues well before failure — provided on your computer and remotely
  • Seamless Cross-Platform Sharing with support for Apple-formatted APFS and HFS+ SoftRAID volumes between Mac and Windows at no additional cost
  • 35+ Years of Experience of Pro Support to provide peace-of-mind with setup help, ongoing questions, or urgent disk issues
  • And many more unique features.
  • Learn more about SoftRAID

M1 Macs require macOS 11.3 or later. SoftRAID is licensed per computer.

iMac Pro with SoftRAID
Apple Thunderbolt 3 to Thunderbolt 2 Adapter

Thunderbolt Made Easy

Have a newer Thunderbolt (USB-C) equipped Mac or iPad? Good news – the OWC ThunderBay 4 mini with Thunderbolt 2 is compatible with your device! You'll need a certified Thunderbolt 3 (USB-C) to Thunderbolt 2 (mDP) Adapter and a Thunderbolt 2 cable. The adapter is bi-directional – meaning it can connect a Thunderbolt (USB-C) device to a Thunderbolt 2 Mac and connect a Thunderbolt 2 device (like the OWC ThunderBay 4 mini) to your Thunderbolt (USB-C) Mac or iPad. This compatibility makes it easy to share a OWC ThunderBay 4 mini with both older Thunderbolt/Thunderbolt 2 Mac models and the newest Thunderbolt (USB-C) computers and devices. That's Thunderbolt made easy!

Connect the adapter to one of the available Thunderbolt (USB-C) ports on your Thunderbolt (USB-C) Mac or iPad, then use the Thunderbolt 2 Cable between the adapter and the OWC ThunderBay 4 mini. If you need a Thunderbolt 2 cable to complete your workflow, OWC offers a selection of premium Thunderbolt 2 cables.

Learn more – Rocket Yard Blog: Top 14 questions people ask about Thunderbolt – Answered »

Professional Grade

Professional Grade = Ready to Work

We understand having confidence in gear reliability is paramount to creative professionals. That’s why every ThunderBay undergoes OWC's multi-hour "burn-in" performance certification prior to shipping. This ensures your ThunderBay arrives operating properly and immediately ready for demanding use.

OWC Thunderbolt Cable

OWC Thunderbolt 2 Cable Included

OWC ThunderBay comes with a certified 1.0M OWC Thunderbolt 2 Cable. But if your workflow demands a different length to make the connection, OWC Thunderbolt 2 Cables are the perfect choice.

OWC, Trusted by Pros & Enthusiasts the World Over

OWC, Trusted by Pros & Enthusiasts the World Over

We build our hardware to the highest standards of reliability and performance. Because 100% reliability is always the goal, we rigorously quality test and back our hardware with a 3 Year OWC Limited Warranty and award-winning customer support.

Learn More
  1. 3 Year OWC Limited Warranty for Hard Drive and Solid-State Drive solutions. 1 year OWC Limited Warranty for enclosure only.