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OWC

ThunderBay 4
4.0TB 4-Drive SSD Storage Solution with Dual Thunderbolt 3 Ports

Mac / PC / Thunderbolt 3 / DisplayPort 1.2 / RAID Ready
The Speed You Need
All New Design for Power and Performance
ThunderBay 4, OWC's flagship 4-bay RAID ready powerhouse is bigger and faster than ever before. Now with the unbelievable performance of Thunderbolt 3 — up to 1527MB/s sustained performance1 — it's the ultimate workhorse external storage solution.

Not only faster, the new ThunderBay 4 Thunderbolt 3 is now natively compatible with both 2.5" and 3.5" drives, and with a redesigned chassis, it's even cooler and quieter too. Add vast amounts of high-performance storage with ThunderBay 4.

Utilize each of the four internal drives independently, or use the software RAID of your choice to setup a multi-drive array for high performance or data redundancy.
Edit, Experiment, Create, Design
Designed with performance in mind and engineered to harness the power of Thunderbolt 3, ThunderBay 4 is an incredibly flexible external solution 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 4 undergoes OWC's multi-hour drive "burn-in" performance certification procedure prior to shipping. This ensures your ThunderBay 4 arrives operating properly, ready for demanding use.
Backed by OWC
You can rely on OWC's award-winning U.S.-based support for the ThunderBay 4 solution. Plus, ThunderBay 4 comes with an OWC Limited Warranty.

4 drive bays plus so much more.
Time-tested Cooling Time-Tested Cooling
Built on OWC's time-tested enclosure cooling technology, ThunderBay 4 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.
Multi-Drive Multi-Drive
Daisy-chain up to six ThunderBay 4s for massive storage capabilities and increased performance, or connect multiple ThunderBay 4s to multiple Thunderbolt 3 ports to achieve exponential speed capabilities.
Vibration Dampened Vibration Dampened
ThunderBay 4's drive isolating design reduces sonic resonance, and is aided by over-sized, rugged, vibration-absorbing, non-skid feet.
DisplayPort 1.2 DisplayPort 1.2 Support
Dual Thunderbolt 3 ports let you connect the display of your choice that your computer can support, including 4K displays.
Thunderbolt Cable OWC Thunderbolt Cable
ThunderBay 4 comes with a certified OWC Thunderbolt 3 cable.
1. Sustained read speeds, dependent on mechanism installed.

Product Specifications:

Software Requirements

  • macOS 10.12.2 or later
  • Windows 10 or later

Hardware Requirements

  • Mac or PC featuring Thunderbolt 3 interface
  • Mac or PC featuring Thunderbolt or Thunderbolt 2 interface1

Interface (Chipset)

  • (2) Thunderbolt 3 (Intel DSL6540)
  • (1) DisplayPort

Max Transfer Rate

  • Thunderbolt 3: 40 Gb/s (5000 MB/s)

RAID Modes Supported

  • Software
  • RAID 0, 1, and Independent drive mode

Initial Configuration

  • RAID 0

Standard Mechanism

  • Release Candidate (RC) firmware set

    There are two kinds of firmware for SSDs Mass Production (MP) and Release Candidate (RC). Prior to an MP firmware release, there are beta firmware releases and an RC firmware release. Often, the RC is the same as the MP release, however there can be small changes and bug fixes made between the two. OWC has evaluated the RC for the 6Gb/s SandForce 2281 Processor and found it to be stable with no issues reported during our testing. However, as with any evolutionary product, issues may surface as different usages and configurations are employed and it is important to understand that there will be further updates and revisions.

    Since no firmware update is currently offered for the OWC Mercury EXTREME Pro 6G SSD, no update page exists. To see the typical steps involved with a self performed field firmware update, please visit our 3Gb/s product update page at: http://eshop.macsales.com/Customized_Pages/Framework.cfm?page=sf_firmware.html

    It is important to note that the current firmware update tool requires the use of Windows XP/Vista/7. OWC is currently working on a Mac OS based update tool, but we do not have an exact availability date.

    960GB Mercury Extreme Pro 6G SSD Specifications:

    Specifications

    Controller
    Phison PS3112-S12 with 7% over-provisioning
    NAND
    Synchronous Triple-Level Cell (TLC) 3D NAND Flash
    Form Factor
    2.5-inch 7mm
    Interface
    SATA 6.0 Gb/s
    Capacity
    960GB useable capacity
    Total Flash Memory Components – 1024GB
    64GB allocated to real-time data redundancy & error correction
    Formatted Capacity
    894GiB
    RAID Support
    Yes
    SMART Attributes
    Standard attributes supported
    Native Command Queuing
    up to 32 commands
    Manufacturer Model Number
    S3D7P6G960
    RoHS Compliant
    Yes
    Format

    Physical

    Height (max)
    0.7 cm (0.3 in)
    OWC 7mm – 9.5mm Adapter
    1 included (buy additional)
    Width (max)
    7.0 cm (2.8 in)
    Length (max)
    10.0 cm (3.9 in)
    Weight
    77.0 g (0.17 lbs)

    Reliability

    Data Reliability
    Built-in BCH ECC: Up to 66 bits correctable per 1024 bytes
    Nonrecoverable Read Errors
    Less than 1 sector per 1016 bits read

    Performance

    Sequential Reads (Max)
    Up to 550 MB/s
    Sequential Writes (Max)
    Up to 530 MB/s
    Sequential 4K Read
    Up to 100,000 IOPS
    Sequential 4K Write
    Up to 90,000 IOPS

    Power

    Active
    Write: 2000mW (2.0W) Maximum draw

    Environmental (Operating)

    Altitude
    -304.8 m to 3,048.0 m (-1,000 ft to 10,000 ft)
    Temperature (°F)
    32°F to 158°F
    Temperature (°C)
    0°C to 70°C

    Environmental (Non-Operating)

    Altitude
    304.8 m to 12,192.0 m (-1,000 ft to 40,000 ft)
    Temperature (°F)
    -40°F to 185°F
    Temperature (°C)
    -40°C to 85°C

    Acoustics

    Idle (Typical)
    0.0 bels
    Seek (Typical)
    0.0 bels
    • 1GB = 1,000,000,000 bytes. Total accessible capacity varies depending upon operating environment (typically 5-10% less). The actual total capacity will depend on your own defined file settings/preferences. 
    • In terms of standard gigabytes, 1GiB ≈ 1.074GB and refers to the actual formatted capacity of shown under Mac OS 10.5 or earlier and Microsoft Windows OS.
    4 x 1.0TB* OWC Mercury Extreme Pro 6G SSD**
  • *1GB = 1,000,000,000 bytes. Total accessible capacity varies depending upon operating environment (typically 5-10% less). The actual total capacity will depend on your own defined file settings/preferences.

    **OWC reserves the right to replace or upgrade to equivalent or better components.

Performance

  • Sequential Read/Write (compressible data)
    • Read: 1527MB/s
    • Write: 1365MB/s
  • Sequential Read/Write (incompressible data)
    • Read: 1382MB/s
    • Write: 1119MB/s

Kensington Lock Slot

  • Yes

LED

  • Yes (Power and disk activity)

Plug and Play

  • Yes

Power

  • Power Supply
    • AC input: 100 - 230V

Environment

  • Environmental (Operating)
    • Temperature (°F) 50° — 95°
    • Temperature (°C) 10° — 35°
  • Environmental (Non-Operating)
    • Temperature (°F) −40° — 149°
    • Temperature (°C) −40° — 65°

Dimensions

  • Height: 7.0 in (177 mm)
  • Width: 5.3 in (135 mm)
  • Length: 9.6 in (245 mm)

Weight

  • 5.7 kg (12.6 lbs)
1. Thunderbolt/Thunderbolt 2 compatibility requires a certified Thunderbolt 3 (USB-C) to Thunderbolt 2 (mDP) adapter and a Thunderbolt 2 cable. Compatibility will be at Thunderbolt/Thunderbolt 2 speeds.
2. For units purchased prior to 12/24/18, please see the OWC ThunderBay 4 Support Page for instructions on how to update your ThunderBay's firmware.
Manufacturer provided specifications for Other World Computing p/n TB3IVS04.0S UPC#: 812437029802

Gallery

This product is compatible with... Learn how to find your Mac's model ID
Mac Pro
Mac Pro (Late 2019)
(December 2019)
Model ID: MacPro7,1
3.5GHz 8-Core
Install videos coming soon
Mac Pro
Mac Pro (Late 2019)
(December 2019)
Model ID: MacPro7,1
3.3GHz 12-Core
Install videos coming soon
Mac Pro
Mac Pro (Late 2019)
(December 2019)
Model ID: MacPro7,1
3.2GHz 16-Core
Install videos coming soon
Mac Pro
Mac Pro (Late 2019)
(December 2019)
Model ID: MacPro7,1
2.7GHz 24-Core
Install videos coming soon
Mac Pro
Mac Pro (Late 2019)
(December 2019)
Model ID: MacPro7,1
2.5GHz 28-Core
Install videos coming soon
Mac mini 2018
Mac mini (Late 2018)
(November, 2018)
Model ID: Macmini8,1
3.6GHz i3, 3.0GHz i5, 3.2GHz i7
iMac Intel
iMac Pro
(27-inch Late 2017)
(December 2017)
Model ID: iMacPro1,1
3.2GHz 8-core, 3.0GHz 10-core, 2.3GHz 14-core, 2.5GHz 18-core
Install Videos coming soon
iMac Intel
iMac w/Retina 5K display
(27-inch Early 2019)
(March 2019)
Model ID: iMac19,1
3.0GHz i5, 3.1GHz i5, 3.7GHz i5, 3.6GHz i9
iMac Intel
iMac w/Retina 4K display
(21.5-inch Early 2019)
(March 2019)
Model ID:iMac19,2
3.6GHz i3, 3.0GHz i5, 3.2GHz i7
iMac Intel
iMac w/Retina 5K display
(27-inch Mid 2017)
(June 2017)
Model ID:iMac18,3
3.4GHz i5, 3.5GHz i5, 3.8GHz i5, 4.2GHz i7
iMac Intel
iMac w/Retina 4K display
(21.5-inch Mid 2017)
(June 2017)
Model ID:iMac18,2
3.0GHz i5, 3.4GHz i5, 3.6GHz i7
iMac Intel
iMac (21.5-inch Mid 2017)
(June 2017)
Model ID:iMac18,1
2.3GHz i5
MacBook Pro Retina w/ Touch Bar
MacBook Pro (16-inch Touch Mid 2019)
(November, 2019)
Model ID: MacBookPro16,1
2.6GHz i7, 2.3GHz i9, 2.4GHz i9
Install Videos coming soon
MacBook Pro Retina w/ Touch Bar
MacBook Pro (15-inch Touch Mid 2019)
(May, 2019)
Model ID: MacBookPro15,3
2.6GHz i7, 2.3GHz i9, 2.4GHz i9
Install Videos coming soon
MacBook Pro Retina
MacBook Pro (13-inch Touch Mid 2019)
(July, 2019)
Model ID: MacBookPro15,4
1.4GHz i5, 1.7GHz i7
Install Videos coming soon
MacBook Pro Retina
MacBook Pro (13-inch Touch Mid 2019)
(May, 2019)
Model ID: MacBookPro15,2
2.4GHz i5, 2.8GHz i7
Install Videos coming soon
MacBook Pro Retina w/ Touch Bar
MacBook Pro (15-inch Touch Mid 2018)
(July, 2018)
Model ID: MacBookPro15,1
2.2GHz i7, 2.6GHz i7, 2.9GHz i9
Install Videos coming soon
MacBook Pro Retina
MacBook Pro (13-inch Touch Mid 2018)
(July, 2018)
Model ID: MacBookPro15,2
2.3GHz i5, 2.7GHz i7
Install Videos coming soon
MacBook Pro Retina w/ Touch Bar
MacBook Pro (15-inch Touch Mid 2017)
(June, 2017)
Model ID: MacBookPro14,3
2.8GHz i7, 2.9GHz i7, 3.1GHz i7
MacBook Pro Retina
MacBook Pro (13-inch Touch Mid 2017)
(June, 2017)
Model ID: MacBookPro14,2
3.1GHz i5, 3.3GHz i5, 3.5GHz i7
MacBook Pro Retina
MacBook Pro (13-inch Retina display Mid 2017)
(June, 2017)
Model ID: MacBookPro14,1
2.3GHz i5, 2.5GHz i7
MacBook Pro Retina
MacBook Pro (15-inch Touch Late 2016)
(October, 2016)
Model ID: MacBookPro13,3
2.6GHz, 2.7GHz, 2.9GHz
MacBook Pro Retina
MacBook Pro (13-inch Touch Late 2016)
(October, 2016)
Model ID: MacBookPro13,2
2.9GHz, 3.1GHz, 3.3GHz
MacBook Pro Retina
MacBook Pro (13-inch Retina display Late 2016)
(October, 2016)
Model ID: MacBookPro13,1
2.0GHz, 2.4GHz
MacBook Air
MacBook Air (13-inch Mid 2019)
(July 2019)
Model ID: MacBookAir8,2
1.6GHz i5
MacBook Air
MacBook Air (13-inch Late 2018)
(November 2018)
Model ID: MacBookAir8.1
1.6GHz i5
PC Desktop
PC Compatible
Compatible with Intel / AMD based desktop/laptop PCs with built-in Thunderbolt 3 ports.
Extended Compatibility... Learn how to find your Mac's model ID
Add a Thunderbolt 3 (USB-C) to Thunderbolt 2 (mDP) adapter to extend compatibility to the following machines:
Mac Pro
Mac Pro
(December, 2013)
Model ID: MacPro6,1
2.7GHz 3.0GHz, 3.5GHz, 3.7GHz
iMac Intel
iMac w/Retina 5K display
(27-inch Late 2015)
(October 2015)
Model ID:iMac17,1
3.2GHz i5, 3.3GHz i5, 4.0GHz i7
iMac Intel
iMac w/ Retina 4K display (21.5-inch Late 2015)
(October 2015)
Model ID:iMac16,2
3.1GHz i5, 3.3GHz i7
iMac Intel
iMac (21.5-inch Late 2015)
(October 2015)
Model ID: iMac16,1 or iMac16,2
1.6GHz i5, 2.8GHz i5, 3.1GHz i5, 3.3GHz i7
iMac Intel
iMac w/Retina 5K display
(27-inch Mid 2015)
(May 2015)
Model ID: iMac15,1
3.3GHz i5, 3.5GHz i5, 4.0GHz i7
iMac Intel
iMac w/Retina 5K display
(27-inch Late 2014)
(October 2014)
Model ID: iMac15,1
3.5GHz i5, 4.0GHz i7
iMac Intel
iMac (27-inch Late 2013)
(September 2013)
Model ID: iMac14,2
3.2GHz i5, 3.4GHz i5, 3.5GHz i7
iMac Intel
iMac (27-inch Late 2012)
(October 2012)
Model ID: iMac13,2
2.9GHz i5, 3.2GHz i5, 3.4GHz i7
iMac Intel
iMac (27-inch Mid 2011)
(May 2011)
Model ID: iMac12,2
2.7GHz i5, 3.1GHz i5, 3.4GHz i7
iMac Intel
iMac (21.5-inch Mid 2014)
(June 2014)
Model ID: iMac14,4
1.4GHz i5
iMac Intel
iMac (21.5-inch Late 2013)
(September 2013)
Model ID: iMac14,3
2.9GHz i5 or 3.1GHz i7
iMac Intel
iMac (21.5-inch Late 2013)
(September 2013)
Model ID: iMac14,1
2.7GHz i5
iMac Intel
iMac (21.5-inch Early 2013)
(March 2013)
Model ID: iMac13,1
3.3GHz i3
iMac Intel
iMac (21.5-inch Late 2012)
(October 2012)
Model ID: iMac13,1
2.7GHz i5 , 2.9GHz i5, 3.1GHz i7
iMac Intel
iMac (21.5-inch Late 2011)
(August 2011)
Model ID: iMac12,1
3.1GHz i3
iMac Intel
iMac (21.5-inch Mid 2011)
(May 2011)
Model ID: iMac12,1
2.5GHz i5 , 2.7GHz i5, 2.8GHz i7
Mac mini Intel
Mac mini (Late 2014)
(October, 2014)
Model ID: Macmini7,1
1.4GHz, 2.6GHz, 2.8GHz, 3.0GHz
Mac mini Intel
Mac mini (Late 2012)
(October, 2012)
Model ID: Macmini6,1 & Macmini6,2
2.3GHz, 2.5GHz, 2.6GHz
Mac mini Intel
Mac mini (Late 2012 Server)
(October, 2012)
Model ID: Macmini6,2
2.3GHz, 2.6GHz
Mac mini Intel
Mac mini (Mid 2011)
(July, 2011)
Model ID: Macmini5,1 & Macmini5,2
2.3GHz, 2.5GHz, 2.7GHz
Mac mini Intel
Mac mini (Mid 2011 Server)
(July, 2011)
Model ID: Macmini5,3
2.0GHz
MacBook Pro Retina
MacBook Pro (15-inch Retina display Mid 2015)
(May, 2015)
Model ID: MacBookPro11,4; MacBookPro11,5
2.2GHz, 2.5GHz, 2.8GHz
MacBook Pro Retina
MacBook Pro (13-inch Retina display Early 2015)
(March, 2015)
Model ID: MacBookPro12,1
2.7GHz, 2.9GHz, 3.1GHz
MacBook Pro Retina
MacBook Pro (13-inch Retina Display 2013 - 2014)
(October, 2013 - July, 2014)
Model ID: MacBookPro11,1
2.4GHz, 2.6GHz, 2.8GHz, 2.9GHz, 3.0GHz
MacBook Pro Retina
MacBook Pro (15-inch Retina Display 2013 - 2014)
(October, 2013 - July, 2014)
Model ID: MacBookPro11,2
2.0GHz, 2.2GHz, 2.5GHz, 2.8GHz
MacBook Pro Retina
MacBook Pro (15-inch Retina Display 2013 - 2014)
(October, 2013 - July, 2014)
Model ID: MacBookPro11,3
2.3GHz, 2.5GHz, 2.6GHz, 2.8GHz
MacBook Pro Retina
MacBook Pro (15-inch Retina Display 2013)
(January, 2013)
Model ID: MacBookPro10,1
2.4GHz, 2.7GHz, 2.8GHz
MacBook Pro Retina
MacBook Pro (13-inch Retina Display 2013)
(January, 2013)
Model ID: MacBookPro10,2
2.5GHz, 2.6GHz, 2.9GHz, 3.0GHz
MacBook Pro Retina
MacBook Pro (13-inch Retina Display 2012-2013)
(October, 2012)
Model ID: MacBookPro10,2
2.5GHz, 2.9GHz
MacBook Pro Retina
MacBook Pro (15-inch Retina Display 2012)
(June, 2012)
Model ID: MacBookPro10,1
2.3GHz, 2.6GHz, 2.7GHz
MacBook Pro Unibody
MacBook Pro (15-inch 2012)
(June, 2012)
Model ID: MacBookPro9,1
2.3GHz, 2.6GHz, 2.7GHz
MacBook Pro Unibody
MacBook Pro (13-inch 2012)
(June, 2012)
Model ID: MacBookPro9,2
2.5GHz, 2.9GHz
MacBook Pro Unibody
MacBook Pro (17-inch 2011)
(October, 2011)
Model ID: MacBookPro8,3
2.4GHz, 2.5GHz
MacBook Pro Unibody
MacBook Pro (15-inch 2011)
(October, 2011)
Model ID: MacBookPro8,2
2.2GHz, 2.4GHz, 2.5GHz
MacBook Pro Unibody
MacBook Pro (13-inch 2011)
(October, 2011)
Model ID: MacBookPro8,1
2.4GHz, 2.8GHz
MacBook Pro Unibody
MacBook Pro (17-inch Early 2011)
(February, 2011)
Model ID: MacBookPro8,3
2.2GHz, 2.3GHz
MacBook Pro Unibody
MacBook Pro (15-inch Early 2011)
(February, 2011)
Model ID: MacBookPro8,2
2.0GHz, 2.2GHz, 2.3GHz
MacBook Pro Unibody
MacBook Pro (15-inch Early 2011)
(February, 2011)
Model ID: MacBookPro8,2
2.0GHz, 2.2GHz, 2.3GHz
MacBook Air
MacBook Air (13-inch Early 2015)
(March 2015)
Model ID: MacBookAir7,2
1.6GHz i5, 2.2GHz i7
MacBook Air
MacBook Air (11-inch Early 2015)
(March 2015)
Model ID: MacBookAir7,1
1.6GHz i5, 2.2GHz i7
MacBook Air
MacBook Air (13-inch Mid 2013)
(June, 2013)
Model ID: MacBookAir6,2
1.3GHz, 1.7GHz
MacBook Air
MacBook Air (11-inch Mid 2013)
(June, 2013)
Model ID: MacBookAir6,1
1.3GHz, 1.7GHz
MacBook Air
MacBook Air (13-inch Mid 2012)
(June, 2012)
Model ID: MacBookAir5,2
1.8GHz, 2.0GHz
MacBook Air
MacBook Air (11-inch Mid 2012)
(June, 2012)
Model ID: MacBookAir5,1
1.7GHz, 2.0GHz
MacBook Air
MacBook Air (13-inch Mid 2011)
(July, 2011)
Model ID: MacBookAir4,2
1.7GHz, 1.8GHz
MacBook Air
MacBook Air (11-inch Mid 2011)
(July, 2011)
Model ID: MacBookAir4,1
1.6GHz, 1.8GHz

Includes

Customer Ratings

Write a Review 4.6 / 5 3 out of 3 (100%) reviewers would recommend this product
Verified Buyer
Reviewer: JuniorRavine Location: California Age: 55-65 Experience Level: Power User Owned Product: less than a month
Rating: 5/5 A Great Addition December 27, 2018 When the 2009 Mac Pro started hiccupping several times a day, and with no suitable Mac Pro on the horizon, it was time to make a decision. Having a 2016 MBP it seemed like a great substitute - and would save considerable cash over the purchase of a brand new iMac or something similar. But what to do about all of the essential RAID drives from the old Mac Pro? OWC came to the rescue with this great product. Not only does it do what I need it to do, it does so in a small package that comes with great support. Set-up and installation was simple. The new MBPs are supported - but so are the new iMacs. So if this experiment with the MBP turns sour (I doubt it will, since it's been up a week and racing through work) it'll still work well with one of the new iMac models. Hated to see the old Mac Pro go, but 9 years was a good run. Thanks to OWC and this great product, the transition went without a hitch.

I would recommend this item to a friend! This review is from OWC ThunderBay 4 RAID Ready 4-Bay External Storage Enclosure with Dual Thunderbolt 3 Ports. Customer Videos:

Verified Buyer
Reviewer: TheImaxGuy Location: Toronto Canada Age: 45-54 Experience Level: Power User Owned Product: less than a month
Rating: 4/5 Wunderbar! March 4, 2018 A solid unit, easy to configure and integrate into my system. I was just looking for a unit to house 4 6GB drives that I use for storage, not run in a RAID config, and am pleased with the TB3 connectivity and performance. If only the fam ran a bit quieter... it's no where near a deal breaker, but a tad louder than I was hoping for. Also i couldn't find any info on how much port the unit supplies over TB3. My guess is 60watts from what I was able to determine via macOS system report. My 2016 MacBppk Pro requires 85, which I can get from my LG 5K display, so I changed my TB3 config to accommodate, and all is good!

I would recommend this item to a friend! This review is from OWC ThunderBay 4 RAID Ready 4-Bay External Storage Enclosure with Dual Thunderbolt 3 Ports. Customer Videos:

Verified Buyer
Reviewer: Sonant Location: Minnesota Experience Level: Power User Owned Product: less than a month
Rating: 5/5 After just one day of use, the Thunderbay 4 with dual Thunderbolt 3 ports works as expected on my 2017 iMac January 31, 2018 I received my Thunderbay 4 yesterday, along with two HGST 6TB drives purchased separately at OWC.

The drives, one in slot A, the other in slot B, loaded into the housing in just a few minutes.

After a minor problem entering the SoftRAID Lite XT serial number in the SoftRAID Lite application (SoftRAID support answered my emailed question within 2 minutes and provided a solution) I proceeded to create a RAID 0 with the two drives. That took just a few minutes - the process is simple and clear.

The unit connected to my new 2017 iMac with no problems. I've been transferring data for about 4 hours from my old Mac Pro, and the drive stays connected and behaves as expected. This morning on boot-up it continues to function perfectly.

I just added two additional drives from my old computer that I will use as independent drives. Drive C is a general data drive, and that mounted and allows me access to all data that was already on the disk. Drive D will act as a Time Machine drive for Drive C. (I have an older OWC Mercury Elite Pro Dual that backs up the main RAID hourly using Carbon Copy Cloner).

So far, so good! This is the drive I wanted, and it was worth the wait to get Thunderbolt 3 connections. I know the Thunderbolt 2 version would have been good enough, but I like the direct connection to my new iMac without converters, and the fact that is ready to chain another drive in the future.

I would recommend this item to a friend! This review is from OWC ThunderBay 4 RAID Ready 4-Bay External Storage Enclosure with Dual Thunderbolt 3 Ports. Customer Videos:

OWC ThunderBay 4 4.0TB 4-Drive SSD Storage Solution with Dual Thunderbolt 3 Ports Mfr P/N: TB3IVS04.0S OWC SKU: OWCTB3IVS04.0S Featuring SoftRAID Lite. Thunderbolt 3 cable included 3 Year OWC Limited Warranty Ships: 7 Days only $1,199.00
Add to CartOther World Computing TB3IVS04.0S, Click to Buy Now
Additional Capacities & Kits: Enclosure Only
  • 0GB
    • Ships: Pending
    • Only $429.99
    • OWC Price $394.99
Hard Drive Models
  • 4.0TB
    • Ships: Same Day
    • Only $679.99
    • OWC Price $629.99
  • 8.0TB
    • Ships: 1 Day
    • Only $779.99
    • OWC Price $759.99
  • 16.0TB
    • Ships: 4 Days
    • Only $1,009.99
    • Cyber Saver $929.99
  • 24.0TB
    • Ships: Pending
    • Only $1,259.99
    • Cyber Saver $1,209.99
  • 32.0TB
    • Ships: Pending
    • Only $1,529.99
    • OWC Price $1,479.99
  • 48.0TB
    • Ships: 1 Day
    • Only $2,129.99
    • OWC Price $1,999.99
  • 56.0TB
    • Ships: 4 Days
    • Only $2,529.99
    • OWC Price $2,409.99
Solid-State Drive Models
  • 2.0TB
    • Ships: Same Day
    • Only $929.99
    • OWC Price $899.00
  • 4.0TB