
TerraMaster D4 Thunderbolt 3 Professional-Grade 4-Bay External Hard Drive Enclosure RAID 0/RAID1/RAID5/RAID10/JBOD Hard Disk RAID Storage (Diskless)
TerraMaster’s 4-bay D4 Thunderbolt 3 is compatible with " SATA disks and " SSDs, allowing professionals to capitalise on a total storage capacity of up to 64TB. As a result, you can be assured the device gives you the tools you need to overcome any storage challenge.
Lighting Speed!
The D4 Thunderbolt 3 is equipped with a Gbps lighting speed interface, and the read and write support attains speeds of up to MB/s (test conditions: 5 SSDs, RAID 0 mode). The device is compatible with daisy chaining across multiple Thunderbolt 3 devices, and each one can be realized using the Thunderbolt interface.
Multi-Screen Display
Capitalising on the Thunderbolt 3 and DP interfaces, the D4 Thunderbolt 3 supports multi-screen display with up to 3 screens. This is an ideal solution for multitaskers, especially when efficiency is the end goal.
Dedicated DP Interface
Given its HD DP digital interface, video editors can connect the D4 Thunderbolt 3 to a 4K HD display to satisfy their needs.
Multiple RAID Supports
The D4 Thunderbolt 3 can operate with RAID 0, 1, 5, and 10, as well as JBOD disk array modes for all your application needs. This underpins the all-important concern for guaranteed data security, and it ensures that your storage capacity is utilised in the most efficient way possible.
The Ideal Companion for All Professionals
Given its compactness, its large storage capacity, and its lightning speed, the D4 Thunderbolt 3 is ideally suited for the most demanding applications, including 4K video editing, as well as seamless 4K streaming. Other users, especially those with strict speed and storage requirements, will find a valuable partner in this device.
Authoritative Quality Certification
Both Apple and Intel have certified the D4 Thunderbolt 3’s design and performance, ensuring the device’s consistent performance and reliability.
OWC
Mac mini (Late )
(October, )
Model ID: Macmini7,1
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MacBook Pro (inch Retina display Mid )
(May, )
Model ID: MacBookPro11,4; MacBookPro11,5
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MacBook Pro (inch Retina Display - )
(October, - July, )
Model ID: MacBookPro11,1
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MacBook Pro (inch Retina Display - )
(October, - July, )
Model ID: MacBookPro11,2
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MacBook Pro (inch Retina Display - )
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Model ID: MacBookPro11,3
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MacBook Pro (inch Retina Display )
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Model ID: MacBookPro10,1
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(January, )
Model ID: MacBookPro10,2
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(October, )
Model ID: MacBookPro10,2
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Model ID: MacBookPro9,1
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Model ID: MacBookPro9,2
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MacBook Pro (inch )
(October, )
Model ID: MacBookPro8,3
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MacBook Pro (inch )
(October, )
Model ID: MacBookPro8,2
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MacBook Air (inch Mid )
(June, )
Model ID: MacBookAir6,2
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MacBook Air (inch Mid )
(June, )
Model ID: MacBookAir6,1
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ThunderBay 4
The Phenomenal Speed of Thunderbolt 2
Designed for workflows in content creation, ThunderBay 4 delivers sustained performance up to MB/s1 with the flexibility to support multiple streams of 4K video. With Thunderbolt 2 technology, ThunderBay 4 also supports daisy chains of additional Thunderbolt devices and displays.

Trusted by the Pros of Crunch Time
"I really like using the ThunderBay 4 because [it has] really fast drives and I’m getting about —MB/s. They have the SoftRAID which…gave me the options to be able to recover in case the absolute worst happens."
-Gary Huff, Media Manager, Crunch Time
4 Bays & Up to 56TB
ThunderBay 4 is built to deliver enormous capacity, and supports flexible RAID configurations to perfectly match your performance needs. With the potential for up to 56TB of production-grade storage, ThunderBay 4 delivers the capacity and speed you need for demanding creative workflows.
Cool, Quiet, and Always Reliable
A quiet workspace and dependable storage is essential to your productivity. ThunderBay 4 features a rugged aluminum enclosure, an oversized, temperature-regulated fan, and an integrated power supply to keep your drives running reliably quiet, and cool. ThunderBay 4 undergoes rigorous testing and multi-hour drive burn-in, delivering production-class dependability out of the box.
Connect to Thunderbolt 3 Systems with Ease
The OWC ThunderBay 4 harnesses the power of Thunderbolt which provides upwards compatibility with Thunderbolt 3 (at Thunderbolt 2 speeds). Whichever interface your workflow demands, it’s easy to integrate OWC ThunderBay 4’s massive capacity and performance capabilities. Add a Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter and you’re all set.
Pro-Tips: Daisy-Chaining with Thunderbolt Devices
With the ability to run up to six devices per port, Thunderbolt ports amplify your laptop or desktop with peripheral power. Learn the basics of daisy-chaining Thunderbolt devices for maximum performance in this handy infographic.View Infographic
Includes SoftRAID: Easy and Complete Drive Management
Now you can maximize disk space, get the fastest access speeds, and protect against disk failure with Plug and Play simplicity. SoftRAID’s easy setup makes it a breeze to create RAID volumes by helping you through the entire process. Just decide what you’re using your RAID volume for and how much space to allocate to it. It's that simple to create your preference of speed and/or redundancy attributes of your data volume.
OWC enclosures ship with the XT version of SoftRAID. SoftRAID XT and Lite XT are fully featured and designed to only work with OWC solutions. Click here to learn more.
Workflow and Storage Solutions for Pros
Whether you’re finishing and mastering, creating proxies or working with state-of-the-art VFX and AR, you need dependable tech that keeps pace with your demands. OWC workflow and storage solutions cover every angle, delivering processing speeds up to MB/s1, capacity for all five levels of RAID, and bonus features like the freedom to daisy-chain and hot-swap. Use the chart to find the perfect match for your workflow and storage.View Chart
Quality you can trust
Like all OWC drives, ThunderBay 4 is built to the highest standards of reliability and performance and Thunderbolt Certified for Mac and Windows. Because % reliability is always the goal, ThunderBay 4 is rigorously quality tested and backed by our 3 Year OWC Limited Warranty plus award-winning, 24/7 customer support.
Warranty varies based on model purchased. See the Tech Specs tab for full details.
AKiTiO Thunder3 Quad
External Thunderbolt™ 3 Storage Solution
This 4-bay storage enclosure is designed to house up to four inch or inch drives. With Software RAID, four striped SSD's can reach data transfer speeds of up to MB per second while the Thunderbolt 3 interface provides sufficient bandwidth for additional 4K video signal streams and data transfers at the same time. An ultra durable aluminum casing provides efficient heat dissipation, plus an extra large rear fan keeps your drives cool during long hours of operation.
Features
- Thunderbolt 3 interface for lightning fast transfer speeds up to 40 Gbps
- Second Thunderbolt 3 port supports Thunderbolt 3, USB (10 Gbps), and DisplayPort devices
- Dedicated DisplayPort for additional monitor to expand the workspace
- Large and quiet low speed fan ( RPM) for active cooling
- Large handle provides comfortable grip when carrying the device
- Removable trays for easy SSD and HDD installation
- Kensington security slot
Thunderbolt Connectivity
Thunderbolt™ 3
Thunderbolt 3 brings Thunderbolt to USB-C at speeds up to 40 Gbps, creating one compact port that does it all – delivering the fastest, most versatile connection to any dock, display, or data device. For the first time, one computer port connects to Thunderbolt devices, every display, and billions of USB devices. A single cable now provides four times the data and twice the video bandwidth of any other cable, while also supplying power to bus-powered devices.
The AKiTiO Thunder3 Quad has two Thunderbolt 3 ports. The second port operates the same as a Thunderbolt 3 computer port by supporting Thunderbolt 3 (up to 5 daisy chained), USB (10 Gbps), and DisplayPort devices.
DisplayPort
The dedicated DisplayPort connector makes it easy to connect an additional monitor to extend your workspace and it will free up the second Thunderbolt 3 port for other Thunderbolt 3 (up to 5 daisy chained), USB (10 Gbps), and DisplayPort devices.
4-Bay Storage Solution
Removeable trays
Designed to house up to four inch or inch drives, the tray based system allows for easy installation and replacement of either the large desktop hard disk drives or the portable laptop drives and SSD's.
Detailed View
Secure Connection
With the 6-pin Mini-Fit Jr.™ power connector, the power cable is held in place securely to avoid accidental disconnection of the device and to prevent subsequent data loss.
Benchmark
With Software RAID, the AKiTiO Thunder3 Quad provides users the ability to edit and playback multiple streams of HD and/or 4K content with enough headroom to simultaneously daisy-chain additional monitors and storage devices.
The transfer speeds for this benchmark were obtained using the AJA System Test tool with 1GB test files at 5K resolution. These results closely reflect the real-world performance but the actual transfer rates can vary depending on the test environment
For traditional spinning hard disk drives, the maximum transfer rate for a single drive (Non-RAID) is around MB/s. Only when used in a striped RAID set can the transfer rates exceed MB/s.
For solid state drives, the maximum transfer speed is limited by the PCIe to SATA controller to around MB/s per drive. Because of this limitation, the maximum transfer rate for a striped RAID with four drives is about MB/s, even though the Thunderbolt 3 interface is capable of speeds faster than that.
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IMPORTANT
Your PC may need updates for the Thunderbolt 3 ports to function properly.
For more information go to https://thunderbolttechnology.net/updates
Compatibility
- This product is not supported on Mac OS X
- This product is not supported on Boot Camp
Enclosure thunderbolt 4 bay
Hands-on: Akitio’s portable 4-Bay Thunderbolt 3 external storage solution turbo-charges your Mac [Video]
Last year I went hands-on with a few Akitio Thunderbolt 3-enabled drive enclosures for 9to5Mac, but none of the previous enclosures came with out-of-the-box support for macOS. Instead, users had to rely on a hack in order to enable support for these enclosures, due to the fact that macOS wasnt compatible with the Thunderbolt 3 chipsets being used.
In todays world, things are a bit different. Much of the Thunderbolt 3 hardware shipping today is no longer Windows only, which is a great thing for recent MacBook Pro and Mid iMac hardware with Thunderbolt 3 I/O capabilities.
Akitios Thunder3 Quad Mini is one such example of Thunderbolt 3-enabled hardware made with the Mac in mind. This four-bay enclosure comes with two Thunderbolt 3 ports in a small aluminum enclosure that supports passive cooling for noiseless operation. In other words, its a quiet enclosure thats perfect for RAID 0 SSD setups for maximum speed. Have a look at our hands-on video walkthrough for more details.
Inside the box
- Akitio Thunder 3 Quad Mini all-aluminum Space Gray enclosure
- Thunderbolt 3 cable
- AC power adapter
- Setup guide
Specs
- 2x Thunderbolt 3 USB-C interfaces
- Daisy chain another Thunderbolt 3 or USB Gen 2 device (supports up to 6 TB3 devices in chain)
- Supports up to four inch HDDs or SSDs
- USB Power Delivery of 15W
- Dedicated Display Port () for additional monitor connectivity (4K @ 60Hz)
- Removable trays for easy access
- Fan for active cooling
- Fan switch for 0dB passive cooling
Video walkthrough
Subscribe to 9to5Mac on YouTube for more videos
Great for the mid 5K iMac
At x x inches, the Thunder3 Quad Mini is very compact, especially when you consider that its capable of housing four drives. Akitio rightly plays up the Quad Minis portability, but as a mid iMac user, I was particularly excited about the prospect of using it with my Thunderbolt 3-enabled desktop machine.
Mid iMac features two Thunderbolt 3 ports
Even though the device is quite svelte, I think it may be an even better fit for iMac users due to the fact that its not bus-powered and requires connecting the included AC adapter. Thus placing it next to a desktop iMac presents no issues with managing the extra power adapter like it may for certain streamlined MacBook Pro setups.
Akitios Thunder3 Quad Mini supports daisy-chaining Thunderbolt 3
Another point to consider is power delivery. Oftentimes, MacBook Pro users connecting to Thunderbolt 3-enabled devices will expect full speed power delivery, whereas Akitios Thunder3 Quad Mini is only capable of delivering 15W of power at a time. Thats enough to help your MacBook Pro tread water, but dont expect it to charge your Mac to any reasonable degree while in use.
Daisy-chaining a USB gen 2-enabled SSD
RAID 0
As an owner of an entry-level 5K iMac with Fusion Drive, I was keenly interested in using the Akitio Thunder3 Quad Mini as a RAID 0 boot drive. This would provide me with tons of storage space when using multiple 1TB SSDs and much faster write and read speeds (up to MB/s with four striped SSDs) when compared to the internal Fusion Drive. Its basically a way to upgrade my boot drive without cracking open the iMac and thus voiding my warranty. The presence of Thunderbolt 3 means that there is more than enough bandwidth to spare for even the fastest drive solutions out there, along with the additional bandwidth required by a 4K display connected to the DisplayPort output.
Latch on bottom to access drive door
One downside to consider when using a software RAID boot drive solution is that macOS doesnt easily support FileVault encryption for these types of setups. There are some hacks that may be employed to get encryption working on software RAID, but you wont be able to go to System Preferences → Security & Privacy → FileVault and flip a switch in order to do so.
Most Akitio Thunder3 Quad Mini users will probably use the enclosure as supplementary external storage anyway, so I dont imagine the issue with encrypting a RAID boot drive will be a very prevalent one.
Four drive bays support four SSDs or four HDDs
If you do use RAID 0 for maximum speed, keep in mind that the more drives you add to the RAID array, the higher the potential for a failure. If one drive in a RAID 0 array fails, then all of the data is lost since that data is striped across all drives. Its not the most ideal configuration for mission-critical setups, which is why I wouldnt recommend RAID 0 for something so important.
Read/Write speeds for a three drive RAID 0 setup
With that said, SSDs are much more reliable these days, and I keep plenty of backups, so for my personal setup its a risk Im more than willing to take. The amount of speed and storage capacity that you get from such a setup is wonderful, especially when compared to the stock Fusion drive inside of the entry-level iMac.
Yet, even if you decide against using RAID 0, its still extremely convenient to have a desktop-accessible inch 4-bay SSD enclosure that can address such a large amount of fast storage on solid state media.
Extremely quiet
One of the nicest features included with the Thunder3 Quad Mini is the external fan switch that allows the unit to work in 0dB silent mode. If youre using traditional spinning hard drives, then youll likely want to keep the fan enabled, but if youre utilizing SSDs then it makes more sense to consider disabling the fan. I noticed that the unit can get fairly warm amid intense conditions, like copying large files, or working with media in Final Cut Pro X, so youll have to decide how comfortable you are with leaving the fan disabled.
The all-aluminum chassis
Thunderbolt 3 Cable
Akitio includes a free Thunderbolt 3 cable inside the box, but I definitely recommend opting for a longer cable. The included meter cable doesnt provide enough slack for most setups in my opinion. For example, the cable wont even reach the Thunderbolt 3 ports on my iMac when the enclosure is placed on the left side of computer. MacBook Pro users might have more flexibility, since more ports are offered on each side of the machine, but meters still isnt long enough if you ask me.
Its nice to have an included Thunderbolt 3 cable, but the cable is quite short
A noisy power connector
[Note: Akitio provided me with a replacement adapter and this has resolved the issue described below.]
Something that I noticed after finishing my hands-on video is that the power connector included with the unit emits a noticeable whine. Its not loud enough to where you may hear it in a noisy environment, but I can definitely hear it in a silent environment.
Akitio Thunder3 Quad Mini Power Adapter
Im not sure if this is just a one-off with my particular power adapter, and Ive reached out to Akitio for clarification/replacement power adapter. Im very sensitive to high frequency noises, so it could just be me, but I thought it was worth warning you about just in case this isnt a one-off. Ill update this post once I hear back from Akitio.
Conclusion
If you own a Thunderbolt 3-enabled Mac, and need an external storage solution, then Akitios Thunder3 Quad Mini is worth considering. The $ device is available for purchase now and provides fast, expandable storage in a very attractive, all-aluminum compact form factor.
The Thunder3 Quad Mini may not be the perfect solution for your needs, considering that youll need to enable RAID 0 and have access to four SSDs to get the most out of the device, but its great to finally have such an option available to Mac users. Be sure to watch our full hands-on video walkthrough above for more details, and sound off down below in the comments with your thoughts and observations.
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Sours: https://9to5mac.com//07/28/review-akitio-thunder3-quad-mini-storage-ssd-thunderboltmac/My relatives rented out my apartments, and they sent me money, which, together with my scholarship, are not very bad means. For a student living in Moscow. The apartment I rent here, of course, is not in the center, but on the other hand, near the metro.
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