The 64TB Flex 1U4 4-Bay Thunderbolt 3 Storage Array from OWC / Other World Computing is 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 64TB, which is split between three 16TB 7200 rpm SATA 3.5" hard drives and four 4TB NVMe M.2 SSDs, with the SSDs being housed in an OWC U2 Shuttle One, 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 Type-C ports, three 10 Gb/s USB Type-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.
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%26E professionals. If you need even more power and flexibility, you can upgrade to SoftRAID Pro to spread volumes over two or more disk enclosures.
Storage Capacity | 64 TB |
Included Drives | 3 x 16 TB 3.5" HDD + 4 x 4 TB SSD |
Cache Memory per Drive | 256 MB |
Initial RAID Configuration | None |
Rotational Speed | 7200 rpm |
Number of Bays | 4 x 2.5"/3.5" |
I/O | 2 x USB Type-C (Thunderbolt 3 (40 Gb/s)) 2 x USB Type-C (USB 3.1 / USB 3.2 Gen 2 (10 Gb/s)) 3 x USB Type-A (USB 3.1 / USB 3.2 Gen 2 (10 Gb/s)) 1 x DisplayPort (DisplayPort 1.4) |
Compatible Drive Interface | SAS (Unspecified Version), SATA (Unspecified Version), NVMe, U.2 |
Form Factor | Rackmount (1 RU) |
RAID | Yes |
Hot-Swap Support | Yes |
PCI Expansion | 1 x PCIe 3.0 x16 (x4 Electrical) |
Supported PCIe Form Factor | Low-Profile, Half-Length |
Transfer Rates | 5000 MB/s |
UASP Support | No |
OS Compatibility | macOS 12 macOS 11 macOS 10.15 *As of April, 2022: Check with manufacturer for the most up-to-date compatibility |
Encryption | None |
Security Features | None |
AC Input Power | 90 to 264 VAC, 50 / 60 Hz at 1.8 to 3.5 A |
Power Source | AC Adapter |
PSU Wattage | 1 x 300 W |
Operating Temperature | 50 to 95°F / 10 to 35°C |
Operating Humidity | 8 to 90% (Non-Condensing) |
Storage Temperature | -40 to 149°F / -40 to 65°C |
Storage Humidity | 5 to 95% (Non-Condensing) |
Certifications | BSMI, CE, FCC, RCM, VCCI, as per Manufacturer |
Cooling | 3 x Fans |
Cable Length | 2.3' / 0.7 m |
Dimensions | 18 x 16.9 x 1.7" / 45.6 x 43 x 4.4 cm |
Weight | 16.3 lb / 7.4 kg |