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TernFS – An exabyte scale, multi-region distributed filesystem

TernFS — an exabyte scale, multi-region distributed filesystem September 2025 XTX is an algorithmic trading firm: it builds statistical models that produce price forecasts for over 50,000 financial instruments worldwide. We use those forecasts to make trades. As XTX's research efforts to build better models ramped up, the demand for resources kept increasing. The firm started out with a couple of desktops and an NFS server, and 10 years later ended up with tens of thousands of high-end GPUs,

5 more ways to share files on Linux that every pro should know

Elizabeth Fernandez/Moment via Getty Follow ZDNET: Add us as a preferred source on Google. ZDNET's key takeaways These are some lesser-known ways of sharing files on Linux. The methods here range from the very simple to the very complicated. Each of these tools is free, and some are pre-installed. Back in 2024, I wrote about how to share files between Linux devices. That article focused on the obvious tools (such as Samba and SCP), so I thought I'd revisit the topic, only highlighting the

A Higgs-Bugson in the Linux Kernel

We recently ran across a strange higgs-bugson that manifested itself in a critical system that stores and distributes the firm’s trading activity data, called Gord. (A higgs-bugson is a bug that is reported in practice but difficult to reproduce, named for the Higgs boson, a particle which was theorized in the 1960s but only found in 2013.) In this post I’ll walk you through the process I took to debug it. I tried to write down relevant details as they came up, so see if you can guess what the b

US healthcare org pays $11M settlement over alleged cybersecurity lapses

Health Net Federal Services (HNFS) and its parent company, Centene Corporation, have agreed to pay $11,253,400 to settle allegations that HNFS falsely certified compliance with cybersecurity requirements under its Defense Health Agency (DHA) TRICARE contract. The U.S. government contracted HNFS to provide managed healthcare support services for TRICARE's North region, covering 22 states. The contract required compliance with cybersecurity standards, specifically 48 C.F.R. § 252.204-7012 and 51