Leil OS Enterprise Storage,
Bringing Hyperscale Efficiency on premises

Leil OS is the industry’s first HDD-Native storage operating system purpose-built for the SMR era. It delivers 95%+ write efficiency and 99% read efficiency on both CMR and SMR drives, bringing hyperscale-grade storage economics to enterprise and service provider on-premises deployments.

Leil FS is the open-source (GPL-3.0) foundation. Leil OS is the commercial enterprise edition built on top of Leil FS. It adds HM-SMR support, ICE, Head Depopulation, advanced erasure coding, the Windows client console, Leil Connect, and Leil Navigator.

Leil OS supports native POSIX via the Leil FS client, NFSv3/NFSv4 via Ganesha FSAL, clustered Samba (SMB/CIFS), and S3 via the Versity gateway. Applications interact with storage through standard protocols – no custom drivers or code changes required.

Leil OS architecture is validated to exabyte scale. It supports the largest HDDs on the planet with seamless capacity refresh across drive generations – CMR and SMR in the same cluster – with zero downtime during expansion.

Leil OS is designed for data-intensive organizations requiring mission-critical, on-premises storage: HPC centers, national laboratories, neoclouds, AI training facilities, media production companies, research institutions, and service providers managing petabyte-scale data. 

Leil OS pricing scales with usage, ensuring affordability from zero to dozens of petabytes. The per-TB pricing model means you pay proportionally to your actual storage footprint, making it accessible for growing deployments.

Leil OS is the only storage operating system purpose-built for modern HDDs. It unlocks +20% extra capacity, achieves 99% read throughput, extends drive lifespan by 40%, and cuts energy consumption by up to 70%. No other platform delivers all four from existing hardware.

Yes. Leil OS provides instant access to any data including archives, enabling rapid processing for AI, analytics, and compliance workloads. Unlike tape-based archives, data on Leil OS is available at disk-speed retrieval times.

Seamlessly. You can add new drives — including mixing CMR and SMR generations — into the same cluster with zero downtime. Automatic rebalancing redistributes data across the expanded infrastructure without manual intervention.

Leil OS includes enterprise-grade support with direct access to the engineering team. Your deployment includes custom reference architecture tailored to your hardware and workload requirements, from initial sizing through production operation. 

Yes. Leil OS includes a Windows Client Console for management and monitoring, clustered Samba for native SMB/CIFS access, and flexible mounting modes supporting both user-level and system-level drive access across Windows and Linux environments.

Leil OS deploys from standard Linux package repositories. Unlike traditional HM-SMR integration projects that require 6-12 months of custom engineering, Leil is designed for rapid adoption with standard protocols and no application-level code changes.