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Black rackmount NAS chassis with twelve front drive bays in a 2U silver-grey frame

Buffalo Technology

Buffalo Technology TS51220RH14412 12-Bay 144TB rackmount NAS

SKU CH-7PJ0-9D86N MPN TS51220RH14412

A 12-bay rackmount NAS with 144TB of pre-installed enterprise drives, 16GB DDR4 memory, native 10GbE and 2.5GbE ports, and RAID 0, 1, 5, 6, 10 support for business storage

  • Form factor12-Bay
  • Operating systemWindows® 11, Windows® 10, Windows® 8.1 (32-bit/64-bit), Wind
  • Supported standardsIEEE802.3an (10GBASE-T), IEEE802.3bz (5GBASE-T/2.5GBASE-T),
  • USB ports2x USB 3.2, 2x USB 2.0
  • Port esataSATA III (6 Gbit/s)
  • Installed RAM16 GB DDR4

Included HDD Capacity 144TB (12 x 12TB)

Model Fully Populated

  • 144TB raw capacity with twelve pre-installed 12TB enterprise drives
  • Native 10GbE and multi-gig ports for high-speed file transfers without cable upgrades
  • Pre-configured RAID with AES-256 encryption and snapshot backup for data protection
  • 16GB DDR4 memory and cloud sync to Amazon S3, Azure, Dropbox and OneDrive
  • VMware- and Windows Server 2022-certified for virtualization workloads

12-Bay 144TB Rackmount NAS

The Buffalo Technology TS51220RH14412 is a 12-bay rackmount network-attached storage system pre-populated with twelve 12TB enterprise-grade hard drives for a total of 144TB raw capacity. It ships with RAID pre-configured and includes 16GB of DDR4 memory. The unit runs a closed-system OS with AES-256 encryption and two-factor authentication, targeting businesses that need immediate, secure high-capacity storage without drive sourcing or setup delays.

Upgrade from smaller or slower arrays

This model replaces multi-bay NAS units limited to 1GbE uplinks or lower drive counts where rebuild times and throughput have become bottlenecks. The jump is worth it when workloads demand native 10GbE connectivity — compliant with IEEE802.3an — plus 5GBASE-T and 2.5GBASE-T fallback, allowing faster file transfers without recabling. It also suits teams moving from JBOD or single-redundancy layouts to RAID 6 or RAID 10 for dual-drive fault tolerance. Buyers who need more than twelve drive bays or a scale-out clustered filesystem should look elsewhere.

Practical limits of 10GbE and SATA interfaces

The native 10GbE port operates at line rate only when the network switch, cabling (Cat6a or better), and client adapters all support 10GBASE-T; otherwise it negotiates down to 5GBASE-T, 2.5GBASE-T, or 1GBASE-T. Each 12TB drive connects via internal SATA III (6Gbps), so sustained sequential throughput per drive cannot exceed that link speed, and random I/O is further constrained by mechanical latency. The two USB 3.2 and two USB 2.0 ports plus one eSATA III port provide auxiliary backup or expansion, but they do not participate in the primary RAID volume.

How it compares

Measured against everything we stock in Rack-Mounted NAS Servers, at today’s prices. Recalculated every night.

Price $10,555.99
Pricier than about 72% of the 763 comparable items (median $6,564.99).

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Specifications

Product
Brand nameBUFFALO
Model nameTS51220RH14412
Memory
Installed RAM16 GB DDR4
Storage
Drives included144 TB (12 × 12 TB)
Supported RAID modes0, 1, 5, 6, 10, and JBOD
Connectivity
Supported standardsIEEE802.3an (10GBASE-T), IEEE802.3bz (5GBASE-T/2.5GBASE-T), IEEE802.3ab (1000BASE-T), IEEE802.3u (100BASE-TX), IEEE802.3 (10BASE-T)
Protocol supportTCP/IP
Ports & slots
USB ports2x USB 3.2, 2x USB 2.0
Port esataSATA III (6 Gbit/s)
Power
Power detailsMax 500 W
Size & build
Form factor12-Bay
Product dimensions29.0 in × 18.9 in × 3.4 in
Product weight41.03–55.37 lb (18.6–25.1 kg)
Shipping weight18.61 kg
Package size737 × 480 × 86 mm
In the box
In the boxIncluded Material : TeraStation, Quick Setup Guide, AC Cable, Front Panel Key, and Warranty Statement
Included Software : NASNavigator2, NovaBACKUP® Buffalo Edition (One server and ten workstation licenses - available for download after product registration)
Additional : For compliance documents such as RoHS Declaration, Certificate of Volatility, Certificate of Conformance, or others please contact.
Environment & compliance
Temperature range32° - 104 °F (0° - 40 °C)
Humidity range10–85% non-condensing
Software
Operating systemWindows® 11, Windows® 10, Windows® 8.1 (32-bit/64-bit), Windows® 7 (32-bit/64-bit), Windows Server® 2022, Windows Server® 2019, Windows
Server® 2016, Windows Server® 2012, Windows Server® 2012R2, Mac® OS® X 10.9 or later

Other versions of this model

5 more in the same range

Questions about this item

What rack depth and height does the 29.0'' x 18.9'' x 3.4'' chassis require?

The unit occupies 2U of rack height at 3.4 inches tall and needs a rack at least 29 inches deep to accommodate its 29.0-inch length.

Which step in the initial setup is most often missed when configuring the pre-installed RAID?

Users frequently skip the NASNavigator2 discovery step, so the pre-configured RAID volume does not appear on the network until the utility assigns an IP address.

When should the twelve 12TB enterprise drives be considered for replacement?

Plan drive replacement after the 3-year warranty period or when the S.M.A.R.T. indicators report reallocated sectors, whichever occurs first.

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