There was also an introductory blog post submitted 4 days ago. 245 points, 108 comments. https://www.xtxmarkets.com/tech/2025-ternfs/ https://news.ycombinator.com/item?id=45290245

Some notable constraints: files are immutable, write-once update never. Designed for files at least 2MB in size. Slow at directory creation/deletion. No permissions/access control.

> TernFS is designed for XTX data center needs of maxing out at around 10EB of logical file storage, around one trillion files and 100 billion directories with around one million clients. All running atop commodity hardware and Ethernet networking.

Good lord.

This feels less like a gift to the community and more like the world's most impressive job ad to attract top-tier kernel developers.

> XTX developed TernFS for distributed storage after they outgrew their original NFS usage and other file-system alternatives.

So... call me old and crotchety, but i'm not sure I trust someone to write a DFS like this that once thought NFS a good idea. I'm sure its fine, I just have bad memories.