Broadband Tower, NTT East Link Storage Across 1000km via IOWN
Joint demonstration connected Tokyo's Otemachi with Sapporo over a 100Gbps line, recording 7.14ms one-way latency and blocking simulated ransomware.
Broadband Tower and NTT East announced on October 27, 2026 that they succeeded in a joint demonstration integrating storage between data centers more than 1000km apart using IOWN APN, according to internet.watch.impress.co.jp.
The demonstration connected Broadband Tower's new Otemachi site in Chiyoda, Tokyo, with NTT East's Sapporo-Higashi exchange in Sapporo, Hokkaido, over a 100Gbps All-Photonics Connect line powered by IOWN.
The tests covered network performance measurement between Tokyo and Hokkaido, large-file reads from the remote site, and defense against simulated ransomware attacks. One-way latency was 7.14ms with jitter under 16ns.
Reading large files from the remote site showed only about a 3% drop in speed, close to same-site performance, with a time difference of under one second. Simulated ransomware attacks on storage were detected and blocked at both sites, and monitoring servers were consolidated at one site.
The companies cited potential uses in generative AI development that draws on training data stored in regional data centers, more efficient multi-site content production, and centralized ransomware protection through storage integration.
Quick answers
What was tested in the Broadband Tower and NTT East demonstration?
Network performance between Tokyo and Hokkaido, large-file reads from a remote site, and defense against simulated ransomware attacks on storage.
How fast was the connection between Tokyo and Sapporo?
The link was a 100Gbps All-Photonics Connect line powered by IOWN, with one-way latency of 7.14ms and jitter under 16ns.
What uses do the companies see for the technology?
Generative AI development using training data stored in regional data centers, multi-site content production, and centralized ransomware protection through storage integration.