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OWC ThunderBay 4


Up to 988MB/s sustained performance


Up to 56TB of capacity

Quick Specs:

  • Thunderbolt 2
  • 4 Drive Bays
  • RAID Ready
  • Mac & Windows

The Speed You Need

  • Dual Thunderbolt 2 ports
  • Works with 3.5" or 2.5" drives – no adapter needed
  • Plug and play RAID Ready (Preconfigured as RAID 0)
  • Ultra quiet, heat dissipating aluminum chassis
  • Rigorously pre-tested with multi-hour burn-in
  • Up to 3 Year OWC Limited Warranty1

  • Performance & reliability at an exceptional value
  • Wide array of model configurations
  • Top review ratings
  • Industry-leading warranty & support

Buying Options

Edit, Experiment, Create, Design

Designed with performance in mind and engineered to harness the power of Thunderbolt 2, ThunderBay 4 is an incredibly flexible external drive with the throughput to support multi-stream compressed 4K video and other bandwidth-intensive operations. Highly configurable to perfectly match your performance needs. Use each drive independently, or in the RAID configuration of your choice for the optimal balance of performance and data-redundancy. Get the most out of your storage, take the brakes off your workflow, and do more with a ThunderBay 4.

Certified and Tested

Each ThunderBay undergoes OWC's multi-hour drive "burn-in" performance certification procedure prior to shipping. This ensures your ThunderBay arrives operating properly and ready for demanding use.

OWC ThunderBay 4 with Thunderbolt 2 in Photography Workstation

Time-Tested Cooling

Built on OWC's time-tested enclosure cooling technology, ThunderBay utilizes an open "flow-thru" vented design with an oversized 92 mm, low-turbulence, noise-quieting fan to keep the drives running cool and reliably.

Vibration Dampened

ThunderBay's drive isolating design reduces sonic resonance, and is aided by over-sized, rugged, vibration-absorbing, non-skid feet.


Daisy-chain up to six ThunderBays for massive storage capabilities and increased performance, or connect multiple ThunderBays to multiple Thunderbolt 2 ports to achieve exponential speed capabilities.

DisplayPort 1.2 Support

Dual Thunderbolt 2 ports let you connect the display of your choice that your computer can support, including 4K displays.

OWC Thunderbolt Cable Included

ThunderBay 4 comes with a certified OWC Thunderbolt cable, with other lengths from 0.5 meter to 30 meters available separately.

OWC Thunderbolt Cable

Quality You Can Trust

Quality You Can Trust

OWC builds 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 24/7 customer support.

Learn More

  1. 3 Year OWC Limited Warranty for Hard Drive solutions. 1 year OWC Limited Warranty for enclosure only.