Increase your service availability with this integrated suite of open source high availability technologies.

Flexible, Policy-Driven Clustering


A highly scalable cluster resource manager with a flexible policy engine that supports n-node clusters. More ›

Corosync and OpenAIS

Clustering and distributed systems infrastructure components. More ›

Metro area clusters

Provides failover across data center locations as far as 30 kilometers apart. More ›

Geo clustering

Delivers failover across unlimited distances. Available with Geo Clustering for SUSE Linux Enterprise High Availability Extension subscription. More ›

Storage-based quorum coverage

Prevents split-brain scenarios. More ›

Multiple SBD

Reliable storage-based fencing that eliminates single point of failure. More ›


HAProxy is a very fast and reliable solution offering high availability, load balancing and proxying for TCP and HTTP-based applications by spreading requests across multiple servers. SUSE Linux Enterprise High Availability Extension 12 includes support for HAProxy to complement the Linux virtual server load balancer.

Cluster-Aware File System and Volume Management


A shared-disk, POSIX-compliant, generic cluster file system that enables the clustering of a wide range of applications for high availability. We have improved the performance of OCFS2 in SUSE Linux Enterprise High Availability Extension 12. More ›


GFS2 is a shared disk file system for Linux computer clusters. It allows all nodes to have direct concurrent access to the same shared block storage. GFS2 read and write support is included in SUSE Linux Enterprise High Availability Extension 12.

Clustered Logical Volume Manager 2 (cLVM2)

Offers a more convenient, single, cluster-wide view of storage. More ›

Continuous Data Replication

Distributed Replicated Block Device (DRBD)

A leading open source networked disk management tool, DRBD enables you to build single partitions from multiple disks that mirror each other and make data highly available. More ›

Node recovery with Relax and Recover

Relax and Recover (formerly ReaR) enables a quick return to full operational status after a node failure. It allows the administrator to take a full snapshot of the system and restore this snapshot on recovery hardware after a disaster. This feature is included on the x86 and x86-64 architectures. More ›

Set-Up and Installation

Templates and wizards

Administrators who lack in-depth knowledge of Linux clustering can use the simple wizards and templates included in SUSE Linux Enterprise High Availability Extension to quickly complete basic set-up tasks.

Cluster Join

Cluster Join enables effortless cluster set-up and expansion of existing clusters. Once you build a node or cluster, you can add new nodes without the need to manually replicate configurations.

Cluster Bootstrap

The Cluster Bootstrap offers a menu driven set-up process for rapidly deploying a base cluster.

Management and Administration Tools

Unified command line interface

The unified command line interface makes it possible for experienced IT managers to quickly and easily install, configure and manage their clustered Linux servers. More ›

Access control lists

Access control lists align cluster management with your processes and policies. By applying role-based controls, you can ensure only IT staff with the proper authority can access cluster management tools. Restricting access not only helps maintain security, it also improves cluster reliability by limiting mistakes.

Cluster-wide shell

The cluster-wide shell improves the effectiveness of managing cluster nodes by enabling the execution of commands across all nodes using the PSSH command.

History explorer

This web-based support tool allows interactive access to cluster logs. It displays and analyzes actions taken by SUSE Linux Enterprise High Availability Extension. The history explorer delivers a more intuitive experience for users who are unfamiliar with the command line.

Graphical user interface

The GUI provides less experienced operators a simple, user-friendly tool for monitoring and administering their clustered environment. More ›


The web console supports full cluster administration, such as adding resources, constraints and dependencies. You can also use it to manage groups of resources, which improves scalability on large clusters. Additionally, you can access control lists, the cluster test drive and a new graphical history explorer through the web console.

Cluster test drive

This feature allows users to simulate a failover situation before an actual disaster happens, making sure of the configuration and resource allocation prior to production. More ›

Cluster configuration sync

Keeps configuration consistent across nodes using csync2.

Resource Agents

Open source applications

SUSE Linux Enterprise High Availability Extension includes many resource agents for open source applications, such as Apache, IPv4, IPv6, DRBD, KVM, Xen and Postgres. More ›

Third party applications

The solution ships with resource agents for popular third party applications, such as IBM WebSphere, IBM DB2, VMware and SAP. More ›

Clustered Samba (CTDB)

Integrated with OCFS2, CTDB can be made highly available and scalable using multiple nodes and can transparently failover through cluster-wide locking. CTDB resources are automatically added and synched to Active Directory.

Virtualization Aware

KVM and Xen support

The cluster resource manager in SUSE Linux Enterprise High Availability Extension is able to recognize, monitor and manage services running on SUSE Linux Enterprise Server with KVM or Xen. More ›

Third-party hypervisor support

Through the use of SBD, you can make services running on third-party hypervisors, such as VMware vSphere or Microsoft Hyper-V, highly available and manage them as if they were running on a physical server. More ›

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