Are You a Data-Intensive Organization? The Storage Strategy the HDD Shortage Is Forcing You to Make
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Insights
Leil OS Enterprise Storage,
Bringing Hyperscale Efficiency on premises
First on-premises distributed file storage that supports the biggest HDDs on the planet.
Make All Data Actionable
Benefit from instant access to any raw data including archives, enabling rapid data processing for modern workloads.
Keep Your Data Forever
Experience seamless capacity refresh and extension without any downtime contrary to the traditional storage migration process.
Optimise Your TB Cost
Our pricing model scales with your usage, ensuring affordability and growth from zero to dozens of petabytes. for growing businesses.
Reduce Energy Consumption
Lower your environmental footprint with a more energy-efficient alternative to traditional HDD-based storage — all without compromising data retrieval speed.
+20%
More Capacity
Unlock hidden density with Host-Managed SMR drives — the same
technology powering hyperscaler data centers.
- HM-SMR — 23% density via shingled recording
- Compression — Inline compression research
- Exabyte-Scale — Architecture validated to exabyte
- LEC — Local Erasure Coding
99%
Native Throughput
Parallel file system engineered for sequential workloads — backup,
archive, media, and AI training pipelines.
- CDL — Command Duration Limits for QoS
- S3 FSAL — Native S3 protocol plugin
- Clustered Samba — High-performance SMB/CIFS
- Leil FS Client — Native POSIX + client-side EC
+40%
Longevity
No forklift upgrades. Seamless capacity refresh across drive
generations — CMR and SMR in the same cluster.
- Head Depopulation extends drives’ lifespan
- ICE — Power-disable extends drive lifespan
- LEC — Reduces rebuild stress on drives
–70%
Energy Savings
ICE power-disable technology cuts idle consumption. Green by
engineering, not by marketing.
- HSMR — Density reduces physical drive count
- ICE — Up to 70% energy savings
- Head Depopulation — Extends lifecycle, reduces e-waste
✓ Included
— Not available
Text in cell = tier-specific qualifier
| Feature | Leil FS The engine of open hyperscale storage Open source · GPL-3.0 | Leil OS Enterprise storage, hyperscale efficiency Enterprise |
|---|---|---|
| Scale and architecture | ||
| Distributed POSIX file system, separated metadata and data planes | ✓ | ✓ |
| Validated scale | Petabyte | Exabyte-class |
| High availability (uRaft failover, floating IP) | ✓ | ✓ |
| Seamless hardware refresh and zero-downtime expansion | ✓ | ✓ |
| Variable capacity support | ✓ | ✓ |
| Data protection | ||
| Reed-Solomon erasure coding up to EC(32,32) | ✓ | ✓ |
| Replication with label-based tiering (SSD/HDD/NVMe) | ✓ | ✓ |
| Copy-on-write snapshots, trash, CRC scrubbing | ✓ | ✓ |
| Automatic data rebalancing | ✓ | ✓ |
| Double-level erasure coding (cross-rack + local) | — | ✓ |
| Extra local erasure coding for fast per-node rebuilds | — | ✓ |
| Protocols and clients | ||
| Native POSIX client (Linux, FUSE3) | ✓ | ✓ |
| NFS v3/v4 (Ganesha FSAL) | ✓ | ✓ |
| S3 (Versity gateway) | ✓ | ✓ |
| SMB/CIFS | Single-node Samba | Clustered Samba |
| Windows client | — | ✓ |
| Windows management console | — | ✓ |
| Flexible mounting modes (user- or system-level) | — | ✓ |
| Security and governance | ||
| POSIX and NFSv4/Rich ACLs, byte-range locking | ✓ | ✓ |
| TLS on all component links | ✓ | ✓ |
| Quotas per user, group, and directory (size and inodes) | ✓ | ✓ |
| Fast recursive deletion (async task manager) | ✓ | ✓ |
| HDD-native hardware support | ||
| CMR HDD, SSD, NVMe | ✓ | ✓ |
| Host-managed SMR drives (production write path) | — | ✓ |
| Mixed drive generations in one cluster (CMR + SMR) | — | ✓ |
| ICE — Infinite Cold Engine (up to 70% energy savings) | — | ✓ |
| Head depopulation (extended drive lifespan) | — | ✓ |
| Command duration limits (CDL) for QoS | — | ✓ |
| Hardware top performance pack | — | ✓ |
| Operations and data services | ||
| Web UI, Prometheus metrics, admin CLI | ✓ | ✓ |
| Leil Connect — multi-site federation | — | ✓ |
| Leil Navigator — cluster-wide data exploration | — | ✓ |
| Support and services | ||
| Support model | Community (Matrix) | Enterprise support |
| Pre-validated reference architecture | — | ✓ |
Free to deploy and modify · community support
Enterprise support · pre-validated reference architecture
All Leil FS capabilities ship inside Leil OS — same engine, same APIs, same protocols.
Explore extra resiliency for your data
What is Leil OS?
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.
How does Leil OS differ from Leil FS?
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.
What file protocols does Leil OS support?
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.
What scale can Leil OS handle?
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.
Who is Leil OS designed for?
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.
How does Leil OS pricing work?
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.
Why should we choose Leil OS over other enterprise storage?
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.
Can Leil OS make all our archived data instantly accessible?
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.
How does Leil OS handle capacity expansion?
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.
What support is available for Leil OS deployments?
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.
Does Leil OS support Windows environments?
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.
How quickly can we deploy Leil OS?
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.
