We unveiled to the world Leil Storage in April 2024 for the 55th edition of The IT Press Tour in Roma, Italy. It was the opportunity to discover the Estonian company who develops a scalable high end secondary storage approach based on SaunaFS, their Google like File System, coupled with erasure coding and ICE - Infinite Cold Engine - to reduce and control power usage coupled with SMR HDDs. I recorded this episode this week at Leil HQ in Tallinn, Estonia, speaking with David Gerstein, CTO, and Piotr Modrzyk, Principal Architect. During this talk, we go deeper explaining how their SaunaFS works, their differentiators, how they coupled it with erasure coding and integrate power control to reduce energy consumption. They leverage SMR HDDs with high capacity, more dedicated to sequential workloads, and use some techniques to reduce power and thus at scale cut significantly electricity bill. We learn also more about their future directions. Enjoy this technical talk. Thank you David and Piotr.