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4.0TB OWC ThunderBay 4 mini
Four-Drive Thunderbolt 2 External Storage Solution with SoftRAID
Mfr P/N: TB4MSRH04T7 OWC SKU: OWCTB4MSRH04T7
The Perfect Combination of Speed, Size, and Convenience for Permanent Access to Your Data
- High capacity: pre-configured with four 2.5-inch hard drives
- Fast: up to 750MB/s peak performance (RAID 0)
- Expandable: Daisy-chain up to five additional Thunderbolt devices
- Includes SoftRAID: robust software for creating, monitoring, and managing advanced RAID sets
- Certified: Thunderbolt certified for Mac and Windows
- 3 Year OWC Limited Warranty
Big RAID System Performance in a Compact Design
A New World of Drive Flexibility
Install or Swap in Minutes
Store More, Go Faster
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
Thunderbolt Made Easy
Professional Grade = Ready to Work
Support You Can Trust
- 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
Back to top- (1) OWC ThunderBay 4 mini External Storage Solution
- (1) 1.0M (39") Thunderbolt 2 Cable
- (1) External Power Supply
- (1) US Power Cable
- (2) Security Keys for Front Panel Lock
- (1) Quick Start Guide for OWC ThunderBay 4 mini with Thunderbolt 2
- (1) Assembly Manual & User Guide for OWC ThunderBay 4 mini with Thunderbolt 2
- (1) 3 Years of SoftRAID Premium Access (License located on device)
- (1) Quick Start Guide for OWC SoftRAID (Digital)
- 3 Year OWC Limited Warranty
Specs
Back to topDrive Bays
- 4 bays
Capacity
- 4.0TB
Total Solution Cache Size
- 512 MB
Drive Mechanism
- (4) 1TB Seagate BarraCuda 7,200RPM 2.5-Inch Hard Drive with 128 MB cache
- *OWC reserves the right to replace or upgrade to equivalent or better components.
Boot Support
- Independent volumes bootable in macOS. Boot Camp is not supported.
Storage Interface
- SATA
RAID Capable
- Yes
Default RAID Level
- RAID 5
RAID Levels Supported
- RAID 0
- RAID 1
- RAID 4
- RAID 5
- RAID 10
- JBOD
RAID Features
- Software RAID
Device Ports
- (1) Host Port - Thunderbolt 2 up to 20Gb/s (2500MB/s) - Thunderbolt 1 backwards compatible
- (1) Thunderbolt 2 Port
Data Transfer Rate (Maximum)
- Thunderbolt 2 : Up to 20Gb/s (or 2500MB/s)
- Thunderbolt : Up to 10Gb/s (or (1250MB/s)
Benchmark Speed, Read (Max)
- Up to 750 MB/s
Benchmark Speed, Write (Max)
- Up to 693 MB/s
Chipset / Controller
- Thunderbolt 2: Intel JHL5520
- SATA Controller: ASMedia ASM-1062
Contact Start Stops
- 600,000
Host Interface Requirements
- Thunderbolt 2 (mDP) port (backwards compatible with Thunderbolt1)
Mac OS Compatibility
- 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
- macOS 14.x Sonoma
- macOS 15.x Sequoia
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 Server 2012
- Windows 10 32-bit Edition
- Windows 10 64-bit Edition
- Windows Server 2019
- Windows Server 2016
- Windows Server 2022
- Windows 11
Driver Required
- SoftRAID Only
Other Requirements
- Requires macOS 10.12.6 or later.
- Will work with Thunderbolt (10Gb/s) Mac models, but data transfer will be limited to 10Gb/s.
- 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.
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, 6A
Wattage
- 72W
Cooling
- (1) 60mm cooling fan
Security Slot
- Yes
Power/Activity LED
- Yes
Housing Color
- Black
Housing Material
- Aluminum
Dimensions
- Height: 11.7 cm (4.6 in)
- Length: 19.1 cm (7.5 in)
- Width: 9.6 cm (3.8 in)
Weight
- 1.5 kg (3.31 lbs)
Certifications
- CE
- FCC
- VCCI
- RCM
- BSMI
Country of Origin
- China
TAA Compliance
- No
Ambient Temperature
- Operating: 41°F to 95°F (5°C to 35°C)
- Non-Operating: -4°F to 140°F (-20°C to 60°C)
Altitude
- Operating: -304.8 m to 3,048.0 m (-1,000 ft to 10,000 ft)
- Non-Operating: -304.8 m to 12,192.0 m (-1,000 ft to 40,000 ft)
Humidity
- Operating: 8% to 90% non-condensing
- Non-Operating: 5% to 95% non-condensing
- When connected to a Thunderbolt (10Gb/s) host, data transfer will be limited to 10Gb/s.
Benchmarks
Back to topTruth in Numbers: Another OWC Difference
There are many attributes that define “The OWC Difference.” By listing real-world performance tests of OWC solutions, we’re confident you’ll be completely satisfied with your technology investment.
macOS RAID 0 Test Results
Blackmagic Disk Speed Test
Thunderbolt 2
AJA System Test
Thunderbolt 2
macOS RAID 5 Test Results
Blackmagic Disk Speed Test
Thunderbolt 2
AJA System Test
Thunderbolt 2
Compatibility & Installation Videos
Back to topMacBook Pro
MacBook Air
Mac Pro
Mac mini
Videos
Back to topLearn More
Customer Reviews
Back to tophorrible. I can't connect it to your dock. I have ordered adapters and cables, but nothing connects. I can't connect to your my new Mac mini. It was a waste of money.
- Reviewer:Reviewer3299512718
Thanks for sharing your candid feedback with us. We're sorry about the issues you're having with the ThunderBay We will have someone reach out to to look into this further with you.
Works well with a refurbished Mac Pro ("trashcan") I bought from OWC. I bought one of these quite a while before they ran out of them. Eventually needed to expand my photo/video storage (internal Mac Pro SSD seems limited to 2TB). Populated this unit with four reliable 2.5" SSDs (wait for a sale?). A cost effective solution. Using MacOS native software RAID as a mirror/stripe set (i.e. no 3rd party software involved). Just use the shortest Thunderbolt 2 cable to connect [and make sure it's alone on it's own Thunderbolt 2 bus for best performance -- Mac Pro ("trashcan") has 3]. No issues and it's fast. Continued lifespan for my Mac Pro ("trashcan"), which, itself was a great deal (and was fully configured and tested by OWC).
I would recommend this product to a friend!
- Reviewer:autoxtl2
We are absolutely thrilled to hear that you're enjoying your storage solution with your refurbished Mac Pro! Your experience is exactly what we love to see—finding effective and cost-efficient ways to expand storage. It's fantastic that you populated it with reliable SSDs and utilized macOS's native software RAID for your setup. Your tip about using the shortest Thunderbolt 2 cable and ensuring it's alone is super helpful! Thank you for sharing your insights and being a part of the OWC community!
The drive is fast and easy to use. I was converting from a PC to all Mac. A word of caution, disks formatted in NTFS are read only on a Mac with NO ability to change. FAT works. I had to reformat my SSDs to Mac
- Reviewer:Nailyard.
Thank you so much for your fantastic review! We're thrilled to hear that the drive is fast and easy to use, and we're so glad it fit your transition from PC to Mac perfectly! Your advice about NTFS formatting is super helpful for others making the switch, and we're grateful you shared your experience. If you need any further assistance or have more questions, we're here to help! Enjoy your new setup! https://eshop.macsales.com/Service/