OWC ThunderBay 4 RAID 5 4-Drive HDD w/ Dual Thunderbolt 3 ports

4 x 1TB 7200 rpm SATA III 3.5" HDDs
4 x 3.5"/2.5" SATA III 6 Gb/s Drive Bays
Thunderbolt 3 (USB Type-C) Interface
RAID 0, 1, 4, 5, 10, and JBOD
Pre-Configured in RAID 5
Software Controller
Read Speeds up to 564 MB/s
1 x 92mm Cooling Fan
SoftRAID Software Included
Windows and Mac Compatible
Number of Bays 4 x 2.5"/3.5"
Connections 2 x USB Type-C (Thunderbolt 3 (40 Gb/s))
1 x DisplayPort (DisplayPort 1.2)
Compatible Drive Interface SATA III
Form Factor Desktop
Maximum RAID Transfer Rate 564 MB/s (Read/Write)
RAID Modes RAID 0, 1, 10, 4, 5, JBOD
Operating System Support Windows, macOS/OS X
OS Compatibility Windows 10 or Later
macOS 10.12.2 or Later
Total Raw Capacity 4 TB (4 x 1 TB)
Type Hard Disk Drive
Rotational Speed 7200 rpm
Interface SATA III
Cache Memory per Drive 32 MB
Initial RAID Configuration RAID 5
Power Source Internal Power Supply
AC Input Power 100 to 230 VAC, 50 / 60 Hz
Security Features Kensington Security Slot
Operating Temperature 50 to 95F / 10 to 35C
Storage Temperature -40 to 149F / -40 to 65C
Cooling 1 x 92 mm Fan
RAID Controller None
Status Monitoring LED Indicator
Dimensions (W x H x D) 5.3 x 7.0 x 9.6" / 134.6 x 177.8 x 243.8 mm
Weight 12.6 lb / 5.7 kg
Packaging Info
Package Weight 16.8 lb
Box Dimensions (LxWxH) 15.6 x 14.3 x 10.9"

Thunderbolt 3
Thunderbolt 3 is a hardware interface that utilizes the reversible USB Type-C connector. Doubling the speed of its predecessor, Thunderbolt 3 features a maximum throughput of 40 Gb/s when used with compatible devices. The connector also transmits data via USB 3.1 at up to 10 Gb/s, and dual-bandwidth DisplayPort 1.2 allows you to connect up to two 4K displays simultaneously. Additionally, you can daisy chain up to six devices from a single Thunderbolt 3 port.
RAID and JBOD Support
The ThunderBay 4 comes pre-configured in RAID 5, but also supports RAID 0, 1, 4, 10, and JBOD.
Time-Tested Cooling
Built on our time-tested enclosure cooling technology, the Thunderbay 4 utilizes an open "flow-thru" vented design with an over-sized 92mm, low turbulence, noise-quieting fan to keep the drives running cool and reliably.
Daisy-chain up to six ThunderBay 4s for more storage capabilities and increased performance, or connect multiple ThunderBay 4s to multiple Thunderbolt 3 ports to achieve higher speed capabilities.
Vibration Dampened
The ThunderBay 4 drive isolating design reduces sonic resonance and is aided by over-sized, rugged, vibration-absorbing, non-skid feet.
DisplayPort 1.2 Support
Dual Thunderbolt ports let you connect the display of your choice that your computer can support, including 4K displays.
OWC Thunderbolt Cable
The ThunderBay 4 comes with a certified OWC Thunderbolt 3 cable.
Total Raw Capacity4 TB (4 x 1 TB)
Storage4TB (4 x 1TB)
Charging and Expansion
Power SourceInternal Power Supply
Operating Requirements
Storage Temperature-40 to 149F -40 to 65C
Size and Weight
Box Dimensions (LxWxH)15.6 x 14.3 x 10.9"
In the Box
Box ContentsOWC / Other World Computing ThunderBay 4 4TB 4-Bay Thunderbolt 3 RAID 5 Array (4 x 1TB)
Thunderbolt 3 Cable
External Power Cable
2 x Security Keys
Operating System
OS CompatibilityWindows 10 or LatermacOS 10.12.2 or Later
Connections2 x USB Type-C (Thunderbolt 3 (40 Gbs))1 x DisplayPort (DisplayPort 1.2)
Rotational Speed7200 rpm
Form FactorDesktop
WarrantyLimited 3-Year Warranty


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Most unopened items sold by Melrose Inc. in new condition and returned within 30 days will receive a refund or exchange. The return window for items sold online begins once the order has been invoiced. Invoicing happens when any part of the order is shipped, delivered by a courier service or made ready for pick up.

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