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OWC ThunderBay 4
Four-Bay Thunderbolt 2 External Storage Enclosure with SoftRAID for 2.5-inch and 3.5-inch SATA Drives
New | Complete | Open Box
Mfr P/N: TB2SRKIT0GB OWC SKU: OWCTB2SRKIT0GBO
Highlights
- Four hot-swappable universal SATA drive bays
- Mix and match 3.5-inch or 2.5-inch drives — no adapter needed
- Up to 859MB/s read and 838MB/s write1
- Includes SoftRAID: robust software for creating, monitoring, and managing advanced RAID sets
- Ultra quiet, heat dissipating aluminum chassis
- Exponentially faster rebuild times than hardware RAID
- 1 Year OWC Limited Warranty
Edit, Experiment, Create, Design
The Most Powerful RAID Tool on the Planet.
- 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
- 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
The RAID 5 Advantage
Certified and Tested
4 drive bays plus so much more.
Backed by OWC
- When connected to a Thunderbolt (10Gb/s) host, data transfer will be limited to 10Gb/s.
- SoftRAID works with macOS 10.14+, Windows 10+, and Windows Server 2019/2022. M1 Macs require macOS 11.3 or later.
- SoftRAID is licensed per computer.
Includes
- (1) OWC ThunderBay 4 Four-Bay Thunderbolt 2 External Storage Enclosure
- (1) 1.0M (39") OWC Thunderbolt Cable
- (1) US Power Cable
- (2) Security Keys for Front Panel Lock
- (1) Quick Start Guide for OWC ThunderBay 4 with Thunderbolt 2
- (1) Assembly Manual & User Guide for OWC ThunderBay 4 with Thunderbolt 2
- (1) 3 Years of SoftRAID Premium Access (License located on device)
- (1) Quick Start Guide for OWC SoftRAID (Digital)
- 1 Year OWC Limited Warranty
Specs
Drive Bays
- 4 bays supporting: 2.5-inch SATA drives, 3.5-inch SATA drives
- 2.5" SATA drive installation requires NewerTech AdaptaDrive, sold separately
Hot Swap Support
- Yes
Hot Plug Support
- Yes
Boot Support
- Independent volumes bootable in macOS
Storage Interface
- SATA
RAID Capable
- Yes
RAID Levels Supported
- JBOD
RAID Features
- Software RAID
Device Ports
- (1) Host Port - Thunderbolt 2 up to 20 Gb/s (2500 MB/s) - Thunderbolt 1 backwards compatible
- (1) Thunderbolt 2 Port
Display Support
- Up to one 4K display @ 60Hz,
- or one 4K display @ 30Hz
Display Support by Port
- Mini DisplayPort 1.2: Up to 4K @ 60Hz
- DisplayPort 1.2: Up to 4K @ 60Hz
Data Transfer Rate (Maximum)
- Thunderbolt 2 : Up to 20 Gb/s (or 2500 MB/s)
- Thunderbolt : Up to 10 Gb/s (or (1250 MB/s)
Chipset / Controller
- Thunderbolt 2: Intel Falcon Ridge
- SATA Controller (2): ASMedia ASM-1062
MTBF (Mean Time Between Failures)
- Varies depending on drive mechanism installed
Contact Start Stops
- Varies depending on drive mechanism installed
Host Interface Requirements
- Thunderbolt 2 (mDP) port (backwards compatible with Thunderbolt1)
Mac OS Compatibility
- Mac OS X 10.6 Snow Leopard
- Mac OS X 10.7 Lion
- Mac OS X 10.8 Mountain Lion
- OS X 10.9 Mavericks
- OS X 10.10 Yosemite
- OS X 10.11 El Capitan
- macOS 10.12 Sierra
- macOS 10.13 High Sierra
- macOS 10.14 Mojave
- macOS 10.15 Catalina
- macOS 11.x Big Sur
- macOS 12.x Monterey
- macOS 13.x Ventura
PC OS Compatibility
- Windows 7 32-bit Edition
- Windows 7 64-bit Edition
- Windows 8 32-bit Edition
- Windows 8 64-bit Edition
- Windows 8.1 32-bit Edition
- Windows 8.1 64-bit Edition
- Windows 10 32-bit Edition
- Windows 10 64-bit Edition
- Windows Server 2019
- Windows Server 2022
- Windows 11
Driver Required
- SoftRAID Only
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. RAID 4/1+0 (10) are currently Mac only at this time.
- Boot Camp is not supported. The Thunderbolt certification process does not include Macs running Windows through Boot Camp.
- PCs running Windows 7 Service Pack 1 or later with a Thunderbolt port. Driver required for proper installation.
External Power Adapter
- No
Power Supply
- Internal UL-listed universal auto-switching power supply
AC Input
- 90-264V, 47-63Hz, 1.8-3.5A
DC Output
- +12V, 16.67A
Wattage
- 200W
Power Requirements
- None
Cooling
- (1) 92mm cooling fan
Security Slot
- Yes
Power Button
- Yes
Power/Activity LED
- Yes
Housing Color
- Black
Housing Material
- Aluminum
Dimensions
- Height: 17.7 cm (7.0 in)
- Length: 24.5 cm (9.6 in)
- Width: 13.5 cm (5.3 in)
Weight
- 3.9 kg (8.60 lbs)
Reach Certification
- Yes
Ambient Temperature
- Operating: Varies depending on drive mechanism installed
- Non-Operating: Varies depending on drive mechanism installed
Altitude
- Operating: Varies depending on drive mechanism installed
- Non-Operating: Varies depending on drive mechanism installed
Humidity
- Operating: Varies depending on drive mechanism installed
- Non-Operating: Varies depending on drive mechanism installed
Shock
- Operating: Varies depending on drive mechanism installed
- Non-Operating: Varies depending on drive mechanism installed
Noise
- Varies depending on drive mechanism installed
- When connected to a Thunderbolt (10Gb/s) host, data transfer will be limited to 10Gb/s.
Compatibility & Installation Videos
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Products

Customer Reviews
Sehr geehrte Damen und Herren mein OWC ThunderBay 4 mini (Thunderbolt 2) zeigt an, dass eine Festplatte ausgetauscht werden musst. Die Produktion von bestehende Festplatte WDC WD6001FZWX-00A2VA0 wird soeben eingestellt. Mit welcher kompatibler Platte kann si neu ersetzt werden? vielen danke für eine Information im Voraus Jaromir Beles
I would recommend this product to a friend!
- Reviewer:Jaromir Beles
Vielen Dank, dass Sie sich mit Ihrer Frage an uns gewandt haben, Jaromir Beles! Wir freuen uns über Ihre Begeisterung, einen kompatiblen Ersatz für Ihre WDC WD6001FZWX-00A2VA0-Festplatte in Ihrem OWC ThunderBay 4 mini (Thunderbolt 2) zu finden. Gerne unterstützen wir Sie bei der Suche nach einem passenden Ersatz. Unser Expertenteam steht Ihnen gerne mit allen benötigten Informationen zur Verfügung. Kontaktieren Sie gerne direkt unseren Kundensupport und wir helfen Ihnen, die perfekte Lösung für Ihre Bedürfnisse zu finden. Wir freuen uns darauf, Sie zu bedienen und danken Ihnen noch einmal, dass Sie sich für MacSales.com entschieden haben!
The first enclosure I received wouldn’t detect the Thunderbolt 2 connection. After executing an RMA, I now have a fully functioning unit with 4 Toshiba MG-08 Series 8TB Data center drives installed. All four drives spun up and the cooling fan came on like it should with a properly detected Thunderbolt 2 bus connection. Currently waiting for drive certification to finish. All four are running concurrently, but 8TB is still going to take awhile. A RAID 1+0 running on a TB2 bus fully protects my data and should still be wicked fast. This is where my media and photo libraries are going after I was burned by a hardware RAID solution.
I would recommend this product to a friend!
- Reviewer:LincPosty
I first bought a drive bay that was pre-configured. Didnt like the configuration that was sent. This purchase however allowed me to do it myself. The thunderbolt connection is also the perfect solution. Speed is no longer an issue. Love it! I Just bought a fourth drive to fill the last slot. I hope to use this box for years to come. OWC never fails I'm life long customer,
I would recommend this product to a friend!
- Reviewer:chkatatonia
Thank you so much for your kind review! Happy to hear you are satisfied with your new purchase and its working well for you! :)