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Product Transition Announcement Update - WS5020 NAS Family to WS5020 2025 Edition NAS Family


Press Releases Sep 09, 2025

SEP 2025—Buffalo Americas, a leading provider of easy-to-use storage solutions and awardwinning pre- and post-sales support, is announcing a product life-cycle status change for the Windows Server IoT 2019 TeraStation series network attached storage product family to While Supplies Last, as well as the transition to the new Windows Server IoT 2025 (WS IoT 2025) TeraStation series product family.
The WS IoT 2025 TeraStation series NAS utilizes a specialized version of Windows Server IoT 2025 that is designed for small storage solutions. The NAS delivers smarter and more efficient data management, with enhanced backup and security features to optimize your data storage experience. Seamless compatibility with Windows software and cloud services means you can integrate it effortlessly into your existing ecosystem. And unlike traditional Windows Server, no Client Access Licenses (CALs) are required, which cuts installation costs today and helps reduce extra fees as your business grows

Technical Comparison Chart

 

WS5020 (2019) Series

WS5020 (2025) Series

Capacity

8-40 TB

4-48 TB

Form Factors

Desktop (2-bay, 4-bay)

Rackmount (4-bay)

Desktop (2-bay, 4-bay)

Rackmount (4-bay)

Hard Drive Type

NAS-Grade NAS-Grade

CPU

Intel Atom C3338 Intel Atom C3338

RAM

GB DDR4 with ECC GB DDR4 with ECC

LAN

10 GbE

10 GbE

Operating System

Windows Server IoT 2019 for Storage Standard Edition

Windows Server IoT 2025 for Storage Workgroup Edition

Cloud Integration

OneDrive, Azure

OneDrive, Azure

iSCSI

Y

Y

Remote Configuration

Y

Y

Client Access License (CAL) Required

N

N

TAA Compliant

Y

Y

Warranty

3 Years

3 Years

 

 

List of Transitioned WS5020 Products

Configuration

Capacity

WS5020 (2019) Series

WS5020 (2025) Series

2-Bay Desktop

8TB

WS5220DN08S9

WS5220DN04W5

4-Bay Desktop

8TB

WS5420DN08S9

WS5220DN08W5

16TB

WS5420DN16S9

WS5420DN16W5

32TB

WS5420DN32S9

WS5420DN32W5
WS5420DN48W5

4-Bay Rackmount

16TB

WS5420RN16S9

WS5420RN16W5
32TB

WS5420RN32S9

WS5420RN32W5
48TB

WS5420RN48S9

WS5420RN48W5


Customers are encouraged to transition to the WS5020 IoT 2025 product family immediately. For additional information, please contact Buffalo at 800-688-7466 or sales@buffaloamericas.com.
Buffalo Americas, Inc. is dedicated to providing secure and affordable business-to-business solutions, delivering network storage products that highlight security, stability, and simplicity, along with award-winning customer service and 24/7 US-based Live Phone support. Responsible for many industry firsts and technology standards, Buffalo has almost five decades of networking and computer peripheral manufacturing and design experience. For more information about Buffalo Americas Inc. and its products, please visit www.BuffaloAmericas.com.

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