Software
DRBD® replicates block storage in the Linux kernel. LINSTOR® provisions and orchestrates it across a cluster. Everything else LINBIT ships extends those two — failover automation, WAN replication, protocol access, Windows support, and the integrations that plug them into your platform.
Synchronous and asynchronous block-level replication inside the Linux kernel — in mainline since 2.6.33. Every LINBIT solution ends here.
Protocol C confirms each write on every replica before the application sees the acknowledgment; DRBD quorum prevents split-brain without fencing hardware.
The control plane: provisions volumes on LVM, ZFS or Windows Storage Spaces, places replicas across the cluster, and drives DRBD — one API for bare metal, Kubernetes, Proxmox VE and the rest.
Storage lands on standard logical volumes readable with ordinary platform tools — nothing hijacks your data.
The complete guide: Meeting your HA, DR & SDS goals with LINBIT software →
Every path through LINBIT software ends at DRBD, and almost every one runs through LINSTOR. Solid lines are platform-specific integrations; dotted lines are the generic HA storage-cluster path.
Diagram by Matt Kereczman, from Exploring LINBIT Software Relationships.
Failover — DRBD Reactor. Promotes a healthy replica and starts its services on DRBD events, with no separate cluster communication layer; replaces Pacemaker in most collocated-service clusters. More →
Distance — DRBD Proxy. Buffers and compresses replication over the WAN so a constrained link never slows the application. Per-node license — the one piece that is not open source. More →
Protocol access — LINSTOR Gateway. Exports LINSTOR volumes as highly available NFS, iSCSI or NVMe-oF targets. Documentation →
Windows — WinDRBD. The native Windows port of DRBD: replicated volumes appear as regular SCSI disks for SQL Server, Hyper-V and file servers. More →
Run & watch — LINBIT GUI, DRBDmon, Deployment Tool. Web management and monitoring, a real-time terminal monitor, and a graphical installer that builds a verified cluster over SSH. GUI → Deployment Tool →
Platform connectors. CSI driver and Operator for Kubernetes, plugins for Proxmox VE, OpenStack, OpenNebula, CloudStack and Docker. Pick your platform →
Appliance: LINBIT VSAN bundles this stack as a turnkey ISO for NVMe-oF, iSCSI and NFS data stores. More →
| You need | LINBIT provides |
|---|---|
| No data loss on failover | Synchronous replication confirms every write on all replicas before the application sees the acknowledgment. |
| Fast recovery after a node failure | DRBD Reactor promotes a healthy replica and restarts services; a returning node resynchronizes only the blocks tracked in its quick-sync bitmap. |
| No lock-in | Replicas live on standard LVM, ZFS or Windows Storage Spaces volumes, readable with the ordinary tools of the platform. |
| Split-brain prevention without fencing hardware | DRBD quorum blocks writes on the inquorate side; a diskless arbitrator on modest hardware can be the third vote. |
| Low overhead | DRBD sits low in the kernel I/O stack — throughput and latency track the backing devices and the network, not the software. |
| Protection beyond one site | Stretched clusters where latency allows, DRBD Proxy over the WAN, and snapshot shipping to another cluster or S3-compatible storage. |
| Works on your platform | LINBIT-maintained integrations for Kubernetes, OpenShift, Proxmox VE, CloudStack, OpenNebula, OpenStack and more. |
| Free to start, supported in production | GPL software from public repositories; subscriptions add certified builds and support up to 24×7. |
All of the software above is open source except DRBD Proxy. A subscription adds certified builds, signed kernel modules, repository access and support up to 24×7 — you buy the way to run it in production, not the code.
Platform storage for private clouds, virtualization and Kubernetes.
Inside: LINSTOR · DRBD · GUI · Deployment Tool
Shared-nothing failover clusters for databases, file services and applications.
Inside: DRBD · DRBD Reactor / Pacemaker · LINSTOR Gateway
Replication to a second site or the cloud, with automated failover when you need it.
Inside: DRBD · DRBD Proxy · snapshot shipping
DRBD and LINSTOR are GPL. Install them from public repositories and run them with community support, for as long as you like.
$1,000 per year for a two-node cluster: certified repository access, software updates and community support.
Unlimited support tickets, remote installation and troubleshooting, response-time SLAs down to one hour, and a named engineer. Priced per cluster and year.
