The OWC 44TB Thunderbolt 3 Storage Array 1U4 4-Bayfrom OWC 44TB Thunderbolt 3 Storage Array 1U4 4-Bayis a flexible storage, docking, and PCIe expansion solution for rackmount use. Compatible with macOS 10.15, 11.x, and 12.x, the Flex 1U4 features a storage capacity of 44TB, which is split between three 12TB 7200 rpm SATA 3.5" hard drives and an 8TB NVMe M.2 SSD, with the SSD being housed in an OWC U2 ShuttleOne, which is a 2.5" U.2 NVMe enclosure. Connectivity to your host system is established using a 40 Gb/s Thunderbolt 3 port, which supports data transfers of up to 5000 MB/s. Daisy-chain five additional devices or add a second display to a second Thunderbolt 3 port, while two 10 Gb/s USB-C ports, three 10 Gb/s USB-A ports, and one DisplayPort 1.4 port provide additional connectivity options. Further expansion methods, such as audio/video capture cards, 10Gb Ethernet, SSD storage, a hardware RAID, or other I/O card, can be used via the PCIe 3.0 x16/x4 slot.

If you'd like to upgrade or replace the storage in your Flex 1U4, the drive bays natively support 2.5" and 3.5" SATA drives, as well as 2.5" and 3.5" U.2 drives. SAS drives are supported with an SAS drive controller (sold separately) and M.2 drives are supported using an M.2 to U.2 adapter, such as the OWC U2 Shuttle and OWC U2 ShuttleOne (sold separately). Also, the Flex 1U4 may be used on Macs with Thunderbolt 2 and Thunderbolt ports via an adapter (sold separately), but this will not support notebook charging via Thunderbolt.

44TB Storage Capacity    3 x 12TB 3.5" HDDs | 1 x 8TB NVMe SSD    Thunderbolt 3 | USB-C 3.2 Gen 2    USB-A 3.2 Gen 2 | DisplayPort 1.4    1 x PCIe 3.0 x16/x4 Slot    Supports 8K, 5K, and 4K Displays    SoftRAID XT RAID Management Software    Data Transfers up to 5000 MB/s    Three Cooling Fans    macOS 10.15, 11.x, and 12.x Compatible

You'll turn your expandability and connectivity dreams into reality when you add the OWC Flex 1U4 to your rack or cart. Use a mix of 2.5 or 3.5" SATA/SAS and U.2/M.2 NVMe drives with four quick-access, hot-swappable drive bays. Connect mixers, keyboards, cameras, and other gear to your heart's content, as well as charge mobile devices with an ample variety of Thunderbolt and USB ports. Add up to an 8K display via DisplayPort. And when you have a custom capture, recording, networking, or storage need, the OWC Flex 1U4 lets you install a PCIe card to conquer specialized tasks.

When your workflow needs change, the "FLEXpandability" of the OWC Flex 1U4 easily adapts. Add new drives, connect different devices, and install a half-length, full-height, single-width PCIe x16 card of your choice, like a 10Gb Ethernet networking card or the fast OWC Accelsior 4M2 SSD for expanded performance storage capacity. By not locking you into an inflexible single-task design, the OWC Flex 1U4 extends its useful life and maximizes your investment well into the future.

The OWC Flex 1U4 is like a bolt-in productivity supercharger for new or existing rack environments powered by a rack Mac Pro, rack PC, MacBook Pro, PC notebook, or even a Mac mini. Whether you build your own custom drive and card configuration or select one of OWC's convenient ready-to-run solutions, the OWC Flex 1U4 is ideal in a wide variety of settings:

• In School: perfect for taming ever-growing collections of digital files with easy integration and future drive capacity and performance scalability.
• At Work: adds Thunderbolt speed and swappable drives to server closets, server rooms, or colocation center backup capabilities.
• On Stage: handles all the storage and peripheral connectivity needs front-of-house pros require for live performances.
• On Set: easily fits into mobile DIT carts to capture multi-stream, hi-res footage at full framerate while daisy-chaining up to five additional Thunderbolt devices.
• In Studio: expands storage and connectivity options of fixed racks.
• At Home: great for installers creating a high-performance home entertainment server closet.

A hallmark of OWC FLEX technology is the ability to use U.2 NVMe SSDs, as well as the OWC ecosystem of U.2 drives and adapters. U.2 NVMe drives are specifically designed to maximize the PCIe bus and when combined with Thunderbolt, you'll blast past fast with real-world transfer speeds of up to 2750 MB/s. Whether you use your rackmount setup to complete massive backups faster, stream content during a live performance, edit large format video, or run high transactional and complex calculation applications, you can do it U.2 to it with the OWC Flex 1U4.

The OWC Flex 1U4 goes with the flow when needing to move data outside or beyond the local network. With the OWC U.2 ecosystem, moving and sharing data is fast and easy. Swap out and ship a project from field to post in video production workflows. Move backup data to an offline colocation for backup workflows. The combination of OWC Flex 1U4 and the OWC U.2 ecosystem opens a new dimension to data transfer possibilities.

• OWC U2 ShuttleOne: Convert an NVMe M.2 "blade" style SSD into a swappable 2.5" U.2 SSD with the peace of mind that your drive and its content are protected by the full metal, heat-dissipating adapter.
• OWC U2 Shuttle: Combine four NVMe M.2 SSDs into a 3.5" U.2 carrier shuttle to create a swappable, massive capacity RAID solution.
• OWC Helios 3S with Interchange System: Create an external Thunderbolt powered set to post U.2 solution that safeguards your data while lowering shipping costs.
• OWC Mercury Pro U.2 Dual: Put blazing fast Thunderbolt powered storage and backup on a desktop with a compact two bay footprint that can use U2 ShuttleOne and U2 Shuttles.
• OWC ThunderBay Flex 8: Take control of your media workflow with a 3-in-1 Thunderbolt storage, docking, and PCIe expansion desktop solution. Easily swaps U2 ShuttleOne and U2 Shuttles to/from the Flex 1U4.

The Flex 1U4 comes complete with hardware for mounting into most racks and cabinets.

Harness the full capability of your OWC Flex 1U4 drive array with the included SoftRAID XT, which is powerful and intuitive RAID management software for macOS and Windows. SoftRAID's RAID creation and management technology has been finely tuned to perfection with over 20 years of development to provide rock solid protection of your data and optimize drive performance. It is packed with features like multiple RAID options, validation and verification of drives, and predictive disk failure with SoftRAID Monitor.

SoftRAID provides a level of storage performance that you simply can't get with hardware RAID and is ideal for anyone who needs to safely store and backup massive amounts of data, including educational institutions, government agencies, businesses, content creators, and M&E professionals. If you need even more power and flexibility, you can upgrade to SoftRAID Pro to spread volumes over two or more disk enclosures.

OWC understands having confidence in gear reliability is paramount to creative professionals. That's why OWC Flex 1U4 solutions go through a multi-step performance certification prior to shipping. This ensures they arrive operating properly and immediately ready for demanding use.

Unexpected disconnects during file transfers or a work session can be devastating. The OWC ClingOn, sold separately, helps reduces and eliminate cable strain on the OWC Flex 1U4's Thunderbolt connection ports.

• Up to two 4K displays at 60 Hz
• One 8K display at 60 Hz
• One 4K display at 120 Hz
• One 5K display at 60 Hz

• Thunderbolt 3: up to 8K at 60 Hz or 4K at 120 Hz via a native Thunderbolt 3 display or other display that supports USB-C connections and DisplayPort 1.4
• DisplayPort 1.4: up to 8K at 60 Hz or 4K at 120 Hz

• One Thunderbolt 3 port with 85W of power delivery
• One Thunderbolt 3 port with 15W of power delivery
• Two USB-C ports with 15W of power delivery

• Four bays supporting 2.5" SATA drives, 3.5" SATA drives, 2.5" U.2 drives, 3.5" U.2 drives, M.2 drives (with an M.2 to U.2 adapter), 2.5" SAS drives (with a SAS drive controller card), and 3.5" SAS drives (with a SAS drive controller card)
• Bays 1 and 2 each support PCIe x4, while bays 3 and 4 support PCIe x1

• macOS 10.15 Catalina
• macOS 11.x Big Sur
• macOS 12.x Monterey
• macOS 13.x Ventura

Related Questions and Answers

Q: 1. Is there an advantage to buying the ThunderBay pre-loaded with drives? If the drives are purchased separately, it would be substantially less expensive (about $1,300).

A: These drives pre-included are enterprise level drives. So the quality may vary on model.

Q: 2. Will this support 24TB drives?

A: The OWC ThunderBay 8 8-Bay Thunderbolt 3 Raid Array with SoftRAID XT (BH #OWTB38SRKIT0) is compatible with hard drives up to 20TB.

Q: 3. What's the rebuild time for a lost disk when using large disks such as 18TB (144TB)?

A: RAID rebuild time is not something that can be calculated with any degree of real accuracy. Ultimately it will depend on which RAID mode you are using and the amount of data that needs to be restored as well as many other factors so we could not speculate on how long it would take exactly.

Q: 4. Is this unit and software fully compatible with Mac OS Big Sur?

A: Yes it is compatible with Big Sur.

Q: 5. Where is the unit made? Taiwan? China? Singapore?

A: The OWC ThunderBay 8 8-Bay Thunderbolt 3 Raid Array with SoftRAID XT has a country of origin from Taiwan.

Q: 6. Is SoftRaid XT also compatible with Windows? If not, what do I need to make it work with Windows? I want to configure this as RAID 5 on a Windows laptop. Thanks.

A: SoftRAID XT can be downloaded for Windows as well. You can use it with the OWC ThunderBay 8 8-Bay Thunderbolt 3 Raid Array with SoftRAID XT.

Q: 7. Is it possible to expand storage at a later point? For instance, I add a similar HDD to the last bay that was previously empty

A: Adding HDD to a existing RAID depends on the RAID mode. Some can allow for it, some do not.

Q: 8. Will this unit allow for multiple RAIDS? Meaning, half the drives on RAID and the other half 4 drives a different RAID?

A: Yes, this can be done easily.

Q: 9. I have 8 separate external hard drives that I want to take apart and insert into this Thunderbay 8 enclosure. I want to see the drives as separate drives, NOT raid drives. In other words, JBOD. If I do NOT install SoftRAID, is JBOD the default? Will I see my 8 separate drives mounted on my Mac with no further effort required? Thanks.

A: It can be used as a JBOD with out SoftRAID.

Q: 10. Can I run this as RAID 6 with a 3rd party software as softraid currently does not support RAID 6 ?

A: Yes, the OWC ThunderBay 8 8-Bay Thunderbolt 3 RAID Enclosure will support RAID 6 via another external software.