Four-Bay Thunderbolt (40Gb/s) External Storage Enclosure for 2.5-inch and 3.5-inch SATA Drives
Performance and Capacity Perfection for Individual to Studio Content Creators
- Work faster: up to 1527MB/s4 real-world speed to easily handle video editing, audio production, and photo editing, and other bandwidth demanding needs
- Work bigger: access, backup, and archive an enormous amount of irreplaceable footage, images, and files
- Built for RAID: just add your own RAID management software, like OWC SoftRAID; the fastest and most flexible RAID 0/1/4/5/1+0 (10) tool. Also supports Apple RAID and Windows Disk Manager.
- Expansive: daisy-chain up to five additional ThunderBay 4 or other Thunderbolt storage devices via the second Thunderbolt port
- Flexible: mix and match 3.5-inch or 2.5-inch HDDs and SSDs
- 1 Year Warranty (enclosure only) or 5 year warranty when ordering enclosure with drives!
SIZE | Drives used (OWC reserves the right to replace or upgrade to equivalent or better components.) |
16TB | (4) 4.0TB Toshiba MG08-D Series 7,200RPM Enterprise Class Hard Disk Drive with 256 MB cache |
24TB | (4) 6.0TB Seagate Exos 7E8 7,200RPM Self-Encrypting (SED) Hard Disk Drive with 256 MB cache |
32TB | (4) 8.0TB Toshiba N300 Series 7,200RPM Enterprise Class NAS Hard Disk Drive with 256 MB cache |
48TB | (4) 12.0TB Toshiba MG09ACA Series 7,200RPM Enterprise Capacity Hard Disk Drive with 512 MB cache |
64TB | (4) 16.0TB Western Digital Ultrastar DC HC550 7,200RPM Enterprise Class Hard Disk Drive with 512 MB cache |
80TB | (4) 20.0TB Toshiba MG10 Series 7,200RPM Enterprise Class Hard Disk Drive with 512 MB cache |
96TB | (4) 24.0TB Toshiba MG11 Series 7,200RPM Enterprise Capacity Hard Disk Drive with 1024 MB cache |
Specs
Drive Bays: 4 bays
Plug and Play: Yes
Hot Swap Support: Yes
Storage Interface: SATA 6.0 Gb/s
Default RAID Level: RAID 5
Device Ports
(1) Host Port - Thunderbolt 3 (USB-C) up to 40Gb/s (5000MB/s)
(1) Thunderbolt 3 (USB-C) Port
Either Thunderbolt (USB-C) port can be used as the host port
Host Interface Requirements
Thunderbolt (USB-C) port (backward compatible with Thunderbolt 2/Thunderbolt but requires adapter which is not included)
Other Requirements
SoftRAID works with macOS 10.14 or later and Windows 10 or later. SoftRAID is licensed per computer. The SoftRAID serial number will work with both Mac and Windows but can only be active on one computer at a time. Additional seats can be purchased.
Dimensions
Height: 19.1 cm (7.5 in)
Length: 24.5 cm (9.6 in)
Width: 13.5 cm (5.3 in)
External Power Adapter: No
Power Supply: Internal UL-listed universal auto-switching power supply
Fans: (1) 92mm cooling fan
Perfect in All, for All
Speed, capacity, and configuration flexibility in a compact desktop footprint. ThunderBay 4 is perfection for a myriad of content creators and the reason it’s been one of the best-selling RAID storage solutions for the past decade.
Handle it all from everyday file storage and backup to running multi-stream compressed 4K video. Choose a preconfigured solution to start working immediately or add your own HDDs or SSDs to a DIY kit. Configure ThunderBay 4 with OWC SoftRAID or your own RAID software to achieve your optimum level of performance and data redundancy. Add additional ThunderBay 4 or other Thunderbolt storage devices to the second Thunderbolt port and flex bigger capacity muscle. In every imaginable way, ThunderBay 4 is perfect in all, for all.
How Much Content You Can Store
RAID 0 (80TB) | RAID 5 (60TB) | |
Video: XAVCS/H.265 4K 4:2:2 10-Bit at 4K 23.976fps - 45GB/hour |
1,778 hours | 1,333 hours |
Video: ProRes 422 HQ 4K at 23.976fps - 396GB/hour |
202 hours | 152 hours |
Video: BRAW 6K DCI At 5:1 compression and 23.976fps - 637GB/hour |
125 hours | 94 hours |
Audio: WAV 32bit 48Khz Stereo - 1.38GB/hour |
57,971 hours | 43,478 hours |
Photo: 45 Megapixel RAW 50MB/each |
1.6 million images | 1.2 million images |
The Difference-Maker for Creators Just Like You
Whether you want to blaze through viewing a huge Lightroom catalog, import and edit massive files faster, level up your editing capabilities, or want to unleash greater audio production capabilities, ThunderBay 4 is the difference maker for:
- Individual content creators and filmmakers
- Audio editors, musicians, producers, music studios
- Wedding, sports and high-volume photographers
- Small production companies and photography studios
- DIT setups with large data needs
- Anyone seeking consolidation of multiple external drives
Gone is the time-consuming frustration of dealing with your content spread across multiple different external drives. Just connect ThunderBay 4’s Thunderbolt cable to your notebook to access your files faster while simultaneously charging your notebook. And with SoftRAID equipped models, you’ll work more confidently knowing the health status of your drives.
Mac-Ready Across the Board
ThunderBay 4 checks all the functional boxes to make you a more efficient content creator: fast data access, enormous storage capacity, centralized (and hassle-free!) file location, and it works with Macs (Intel-based plus the latest Apple Silicon M1/M2/M3/M4 machines) and Windows PCs. What makes ThunderBay 4 the best 4 bay storage solution available is its time-proven reputation of providing peace of mind your data will be safely protected today and tomorrow. Gone is the fear of a costly slow down or — gulp — losing irreplaceable data because you didn’t select the right RAID solution
We Never Rest.
Our Good is Better.
Our Better is Best.
What’s most important to you in a storage solution is likely entirely different than another content creator. That why we don’t rest on our laurels and continue to make sure ThunderBay 4 doesn’t make you compromise. Merge four drives in a RAID 0 for huge performance and capacity gains over using a single external drive. Combine the capacity of three drives and use the fourth for RAID 5 data protection that keeps you working even if one of the drives fails. Or choose a DIY kit and add your own SATA SSDs for ultimate speed. With ThunderBay 4, you’re in charge of what’s good, better, or best for your needs:
RAID Level / Drive Type | RAID 5 HDD | RAID 0 HDD | RAID 0 SSD |
Configuration Attributes |
Best Safety / Better Capacity |
Best Capacity / Better Speed |
Best Speed / Good Capacity |
Maximum Capacity |
60TB (3 x 20TB with 1 x 20TB used for redundant protection) |
80TB |
16TB (4 x 4TB SATA 6G SSD in DIY kit) |
Maximum Speed | Up to 770MB/s | Over 1000MB/s | Up to 1527MB/s |
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.
The Cool Quiet TypeExternal drives for content production need to offer more than just speed and capacity for massive files. They also need to offer quiet and secure reliability. You’ll work confidently and free of distraction with ThunderBay 4’s unique design. Its heat dissipating aluminum housing utilizes “flow-thru” venting, a low-turbulence fan, and a drive-isolating design coupled with vibration-absorbing feet that reduces sonic resonance. And you’ll always keep your data safe and secure with the locking faceplate and backside security slot. |
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Daisy-Chain Possibilities
ThunderBay 4 goes beyond offering the perfect balance of performance and capacity. With an extra Thunderbolt port, you have an unlimited world of workflow options. Attach a 5K Thunderbolt display or two 4K displays. Place a USB-C device at the end of a daisy chain. With an extra Thunderbolt port, you have the flexibility to add to your daisy-chain and master any task at hand.
Pre-Tested = Ready to Work
We understand having confidence in gear reliability is paramount to creative professionals. That’s why every ThunderBay 4 undergoes OWC's multi-hour "burn-in" performance certification prior to shipping. This ensures your ThunderBay 4 arrives operating properly and immediately ready for demanding use.

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