OWC ThunderBay 4 mini
$379.99 Free Shipping

OWC ThunderBay 4 mini

Four-Bay Thunderbolt 2 External Storage Enclosure with SoftRAID for 2.5-inch SATA Drives


Mfr P/N: TB4MSR0GB OWC SKU: OWCTB4MSR0GB

The Perfect Combination of Speed, Size, and Convenience for Permanent Access to Your Data

  • Four hot-swappable 2.5-inch drive bays: mix or match 2.5-inch HDDs and SSDs
  • Fast: up to 750MB/s HDD peak performance and 1346MB/s SSD 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
  • 1 Year OWC Limited Warranty
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Additional Capacities & Kits

DIY Enclosure

0TB
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DIY Enclosure with SoftRAID

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Hard Drive Models with SoftRAID

8TB
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Solid-State Drive Models with SoftRAID

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Big RAID System Performance in a Compact Design

The ThunderBay 4 mini is a compact data storage enclosure that you can populate with new or existing 2.5-inch HDDs or SSDs. It's big on performance and flexibility, yet ThunderBay 4 mini is about the length of a pencil and can weigh as little as 3.1 pounds with drives.
The rugged heat-dissipating aluminum enclosure features two Thunderbolt 2 (Thunderbolt 10Gb/s backward compatible1) ports for up to 1346MB/s speeds, so you have more than enough bandwidth to handle personal and business backups – all the way up to today's highest resolution audio, photo, and video formats. If you are seeking big RAID performance that's small enough to fit on a desk, in a rack, or on a DIT cart, your wish is now a reality.
Speed, size, and convenience — the OWC ThunderBay 4 mini provides everything a demanding workflow requires.

A New World of Drive Flexibility

With four drive bays, you can mix or match different brand and capacity 2.5-inch SSDs and HDDs. Use mixed drives independently or combine drives as a RAID with the included OWC SoftRAID setup and management software. Populate this empty enclosure with a combination of drives that achieves your desired balance of storage, performance, and data redundancy.
Expand production capabilities in industry-leading creative platforms like Final Cut X, Avid Pro Tools, Apple Pro Logic, and Adobe Lightroom, edit large images, manage massive photo and audio libraries, store drone videos, use it as a transport drive…whatever the day or project demands, the ThunderBay 4 mini is the perfect workflow solution.

Install or Swap in Minutes

Want to access a drive or expand your storage capacity? Simply open the front panel security lock to access the four individual bays. Drives mount to a tray that slides back in and automatically plugs into a drive connector so you can get back to work in minutes.

Store More, Go Faster

With the ability to daisy-chain you can add up to five additional ThunderBay 4 mini solutions to create massive storage capacities. Merge them with OWC SoftRAID for even more flexibility, capacity, and capability. Or if speed is what you're after, connect multiple ThunderBay 4 mini solutions to multiple Thunderbolt 2 ports on your Mac or PC to achieve exponential speed capabilities.

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
  • 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
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.

Thunderbolt Made Easy

Have a newer Thunderbolt (USB-C) equipped Mac or iPad? Good news – the OWC ThunderBay 4 mini with Thunderbolt 2 is compatible with your device! You'll need a certified Thunderbolt 3 (USB-C) to Thunderbolt 2 (mDP) Adapter and a Thunderbolt 2 cable. The adapter is bi-directional – meaning it can connect a Thunderbolt (USB-C) device to a Thunderbolt 2 Mac or connect a Thunderbolt 2 device (like the OWC ThunderBay 4 mini) to your Thunderbolt (USB-C) Mac or iPad. This compatibility makes it easy to share a OWC ThunderBay 4 mini with both older Thunderbolt/Thunderbolt 2 Mac models and the newest Thunderbolt (USB-C) computers and devices. That's Thunderbolt made easy!
Connect the adapter to one of the available Thunderbolt (USB-C) ports on your Thunderbolt (USB-C) Mac or iPad, then use the Thunderbolt 2 Cable between the adapter and the OWC ThunderBay 4 mini. If you need a Thunderbolt 2 cable to complete your workflow, OWC offers a selection of premium Thunderbolt 2 cables.

Professional Grade = Ready to Work

We understand having confidence in gear reliability is paramount to creative professionals. That's why every ThunderBay 4 mini enclosure undergoes a multi-step performance certification prior to shipping. This ensures your ThunderBay 4 mini enclosure arrives ready for demanding use.

Support You Can Trust

Like all OWC products, the ThunderBay 4 mini enclosure is fully backed by OWC's award-winning support team.
  1. When connected to a Thunderbolt (10Gb/s) host, data transfer will be limited to 10Gb/s.
  2. SoftRAID works with macOS 10.14+, Windows 10+, and Windows Server 2019/2022. M1 Macs require macOS 11.3 or later.
  3. SoftRAID is licensed per computer.

IncludesIncludes

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    Drive Bays

    • 4 bays supporting: 2.5-inch SATA drives
    • Supports drives up to 15mm in height

    Boot Support

    • Independent volumes bootable in macOS. Boot Camp is not supported.

    Storage Interface

    • SATA

    RAID Capable

    • Yes

    RAID Levels Supported

    • JBOD
    • RAID 0
    • RAID 1
    • RAID 0+1
    • RAID 4
    • RAID 5

    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)

    Chipset / Controller

    • Thunderbolt 2: Intel JHL5520
    • SATA Controller: ASMedia ASM-1062

    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 10 32-bit Edition
    • Windows 10 64-bit Edition
    • Windows Server 2019
    • 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

    • 1.1 kg (2.51 lbs)

    Certifications

    • CE
    • FCC
    • VCCI
    • RCM
    • BSMI

    Reach Certification

    • Yes

    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

    Shock

    • Operating: Varies depending on drive mechanism installed
    • Non-Operating: Varies depending on drive mechanism installed

    Noise

    • Varies depending on drive mechanism installed
    1. When connected to a Thunderbolt (10Gb/s) host, data transfer will be limited to 10Gb/s.

    Compatibility & Installation VideosCompatibility & Installation Videos

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    MacBook Pro (Retina, 15-inch, Mid 2015)
    MacBook Pro (Retina, 15-inch, Mid 2015)
    Mid 2015
    Model ID: MacBookPro11,5 & MacBookPro11,4
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    Detailed SpecsInstall Videos
    MacBook Pro (Retina, 13-inch, Early 2015)
    MacBook Pro (Retina, 13-inch, Early 2015)
    Early 2015
    Model ID: MacBookPro12,1
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    MacBook Pro (Retina, 15-inch, Mid 2014)
    MacBook Pro (Retina, 15-inch, Mid 2014)
    Mid 2014
    Model ID: MacBookPro11,3 & MacBookPro11,2
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    MacBook Pro (Retina, 13-inch, Mid 2014)
    MacBook Pro (Retina, 13-inch, Mid 2014)
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    MacBook Pro (Retina, 15-inch, Late 2013)
    MacBook Pro (Retina, 15-inch, Late 2013)
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    MacBook Pro (Retina, 13-inch, Late 2013)
    MacBook Pro (Retina, 13-inch, Late 2013)
    Late 2013
    Model ID: MacBookPro11,1
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    MacBook Pro (Retina, 13-inch, Early 2013)
    MacBook Pro (Retina, 13-inch, Early 2013)
    Early 2013
    Model ID: MacBookPro10,2
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    MacBook Pro (Retina, 15-inch, Early 2013)
    MacBook Pro (Retina, 15-inch, Early 2013)
    Early 2013
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    MacBook Pro (Retina, 13-inch, Late 2012)
    MacBook Pro (Retina, 13-inch, Late 2012)
    Late 2012
    Model ID: MacBookPro10,2
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    MacBook Pro (13-inch, Mid 2012)
    MacBook Pro (13-inch, Mid 2012)
    Mid 2012
    Model ID: MacBookPro9,2
    2.5GHz Core i5 & 2.9GHz Core i7
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    MacBook Pro (15-inch, Mid 2012)
    MacBook Pro (15-inch, Mid 2012)
    Mid 2012
    Model ID: MacBookPro9,1
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    MacBook Pro (Retina, 15-inch, Mid 2012)
    MacBook Pro (Retina, 15-inch, Mid 2012)
    Mid 2012
    Model ID: MacBookPro10,1
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    MacBook Pro (17-inch, Late 2011)
    MacBook Pro (17-inch, Late 2011)
    Late 2011
    Model ID: MacBookPro8,3
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    MacBook Pro (15-inch, Late 2011)
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    Model ID: MacBookPro8,2
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    MacBook Pro (13-inch, Late 2011)
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    Model ID: MacBookPro8,1
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    MacBook Pro (17-inch, Early 2011)
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    Model ID: MacBookPro8,3
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    MacBook Pro (15-inch, Early 2011)
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    Model ID: MacBookPro8,2
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    MacBook Pro (13-inch, Early 2011)
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    Model ID: MacBookPro8,1
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    MacBook Air (13-inch, Mid 2017)
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    Model ID: MacBookAir7,2
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    MacBook Air (13-inch, Early 2015)
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    Model ID: MacBookAir7,2
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    MacBook Air (11-inch, Early 2015)
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    Model ID: MacBookAir7,1
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    MacBook Air (13-inch, Early 2014)
    MacBook Air (13-inch, Early 2014)
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    Model ID: MacBookAir6,2
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    MacBook Air (11-inch, Early 2014)
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    Model ID: MacBookAir6,1
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    MacBook Air (13-inch, Mid 2013)
    MacBook Air (13-inch, Mid 2013)
    Mid 2013
    Model ID: MacBookAir6,2
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    MacBook Air (11-inch, Mid 2013)
    MacBook Air (11-inch, Mid 2013)
    Mid 2013
    Model ID: MacBookAir6,1
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    MacBook Air (11-inch, Mid 2012)
    MacBook Air (11-inch, Mid 2012)
    Mid 2012
    Model ID: MacBookAir5,2
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    MacBook Air (13-inch, Mid 2012)
    MacBook Air (13-inch, Mid 2012)
    Mid 2012
    Model ID: MacBookAir5,2
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    MacBook Air (11-inch, Mid 2012)
    MacBook Air (11-inch, Mid 2012)
    Mid 2012
    Model ID: MacBookAir5,1
    1.7GHz Core i5 & 2.0GHz Core i7
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    MacBook Air (13-inch, Mid 2011)
    MacBook Air (13-inch, Mid 2011)
    Mid 2011
    Model ID: MacBookAir4,2
    1.6GHz & 1.7GHz Core i5 & 1.8GHz Core i7
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    MacBook Air (11-inch, Mid 2011)
    MacBook Air (11-inch, Mid 2011)
    Mid 2011
    Model ID: MacBookAir4,1
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    iMac (Retina 5K, 27-inch, Late 2015)
    iMac (Retina 5K, 27-inch, Late 2015)
    Late 2015
    Model ID: iMac17,1
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    iMac (21.5-inch, Late 2015)
    iMac (21.5-inch, Late 2015)
    Late 2015
    Model ID: iMac16,2
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    iMac (Retina 4K, 21.5-inch, Late 2015)
    iMac (Retina 4K, 21.5-inch, Late 2015)
    Late 2015
    Model ID: iMac16,2
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    iMac (21.5-inch, Late 2015)
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    Late 2015
    Model ID: iMac16,1
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    iMac (Retina 5K, 27-inch, Mid 2015)
    iMac (Retina 5K, 27-inch, Mid 2015)
    Mid 2015
    Model ID: iMac15,1
    3.3GHz Core i5
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    iMac (Retina 5K, 27-inch, Late 2014)
    iMac (Retina 5K, 27-inch, Late 2014)
    Late 2014
    Model ID: iMac15,1
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    iMac (21.5-inch, Mid 2014)
    iMac (21.5-inch, Mid 2014)
    Mid 2014
    Model ID: iMac14,4
    1.4GHz Core i5
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    iMac (21.5-inch, Late 2013)
    iMac (21.5-inch, Late 2013)
    Late 2013
    Model ID: iMac14,3
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    Detailed SpecsInstall Videos
    iMac (27-inch, Late 2013)
    iMac (27-inch, Late 2013)
    Late 2013
    Model ID: iMac14,2
    3.4GHz & 3.2GHz Core i5 & 3.5GHz Core i7
    Detailed SpecsInstall Videos
    iMac (21.5-inch, Late 2013)
    iMac (21.5-inch, Late 2013)
    Late 2013
    Model ID: iMac14,1
    2.7GHz Core i5
    Detailed SpecsInstall Videos
    iMac (21.5-inch, Early 2013)
    iMac (21.5-inch, Early 2013)
    Early 2013
    Model ID: iMac13,3
    3.3GHz Core i3
    Detailed Specs
    iMac (27-inch, Late 2012)
    iMac (27-inch, Late 2012)
    Late 2012
    Model ID: iMac13,2
    2.9GHz & 3.2GHz Core i5 & 3.4GHz Core i7
    Detailed SpecsInstall Videos
    iMac (21.5-inch, Late 2012)
    iMac (21.5-inch, Late 2012)
    Late 2012
    Model ID: iMac13,1
    2.7GHz & 2.9GHz Core i5 & 3.1GHz Core i7
    Detailed SpecsInstall Videos
    iMac (21.5-inch, Late 2011)
    iMac (21.5-inch, Late 2011)
    Late 2011
    Model ID: iMac12,1
    3.1GHz Core i3
    Detailed SpecsInstall Videos
    iMac (27-inch, Mid 2011)
    iMac (27-inch, Mid 2011)
    Mid 2011
    Model ID: iMac12,2
    2.7GHz & 3.1GHz Core i5 & 3.4GHz Core i7
    Detailed SpecsInstall Videos
    iMac (21.5-inch, Mid 2011)
    iMac (21.5-inch, Mid 2011)
    Mid 2011
    Model ID: iMac12,1
    2.7GHz & 2.5GHz Core i5 & 2.8GHz Core i7
    Detailed SpecsInstall Videos
    Mac Pro (Late 2013)
    Mac Pro (Late 2013)
    Late 2013
    Model ID: MacPro6,1
    3.7GHz 4-Core Xeon & 3.5GHz & 3.7GHz 6-Core Xeon & 3.0GHz 8-Core Xeon & 3.0GHz 10-Core Xeon & 2.7GHz 12-Core Xeon
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    Mac mini (Late 2014)
    Mac mini (Late 2014)
    Late 2014
    Model ID: Macmini7,1
    1.4GHz & 2.6GHz & 2.8GHz Core i5 & 3.0GHz Core i7
    Detailed SpecsInstall Videos
    Mac mini (Late 2012)
    Mac mini (Late 2012)
    Late 2012
    Model ID: Macmini6,2
    2.3GHz & 2.6GHz Core i7
    Detailed SpecsInstall Videos
    Mac mini Server (Late 2012)
    Mac mini Server (Late 2012)
    Late 2012
    Model ID: Macmini6,2
    2.3GHz & 2.6GHz Core i7
    Detailed SpecsInstall Videos
    Mac mini (Late 2012)
    Mac mini (Late 2012)
    Late 2012
    Model ID: Macmini6,1
    2.5GHz Core i5
    Detailed SpecsInstall Videos
    Mac mini Server (Mid 2011)
    Mac mini Server (Mid 2011)
    Mid 2011
    Model ID: Macmini5,3
    2.0GHz Core i7
    Detailed SpecsInstall Videos
    Mac mini (Mid 2011)
    Mac mini (Mid 2011)
    Mid 2011
    Model ID: Macmini5,2 & Macmini5,1
    2.5GHz & 2.7GHz Core i7 & 2.3GHz Core i5
    Detailed SpecsInstall Videos
    4.57 out of 5

    44 out of 53 (83%) reviewers would recommend this product

    Write a Review
    74%
    17%
    6%
    0%
    4%

    impossible to connect

    horrible. 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.

    Verified Purchase
    Verified PurchaseVerified Purchase.
    Reviewer3299512718, 
    • Reviewer:Reviewer3299512718
    Response from OWC, Support

    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

    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!

    Verified Purchase
    Verified PurchaseVerified Purchase.
    autoxtl2, 
    • Reviewer:autoxtl2
    Response from OWC, Support

    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!


    Exactly what I needed

    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

    Verified Purchase
    Verified PurchaseVerified Purchase.
    Nailyard., 
    • Reviewer:Nailyard.
    Response from OWC, Support

    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/


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