Compare the Top High Availability Cluster Solutions for Windows as of June 2025

What are High Availability Cluster Solutions for Windows?

High availability cluster solutions are systems designed to ensure continuous operation of applications and services by minimizing downtime through redundancy and failover mechanisms. These solutions link multiple servers or nodes to work together, so if one node fails, others automatically take over without service interruption. They provide monitoring, load balancing, and automatic recovery features to maintain system reliability and performance. High availability clusters are critical for mission-critical applications requiring near-zero downtime, such as databases, web services, and financial systems. By reducing single points of failure, they help organizations meet stringent uptime and disaster recovery requirements. Compare and read user reviews of the best High Availability Cluster solutions for Windows currently available using the table below. This list is updated regularly.

  • 1
    Percona XtraDB Cluster
    Percona XtraDB Cluster (PXC) is a high availability, open-source, MySQL clustering solution that helps enterprises minimize unexpected downtime and data loss, reduce costs, and improve the performance and scalability of your database environments. PXC supports your critical business applications in the most demanding public, private, and hybrid cloud environments. Percona XtraDB Cluster (PXC) preserves, secures, and protects data and revenue streams by providing the highest level of availability for your business-critical applications. PXC helps you increase efficiency, eliminate license fees, and lower your total cost of investment, helping you meet budget constraints. Our integrated tools enable you to optimize, maintain, and monitor your cluster. This ensures you get the most out of your MySQL environment.
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    Starting Price: Free
  • 2
    DRBD

    DRBD

    LINBIT

    DRBD® (Distributed Replicated Block Device) is an open source, software‑based, shared‑nothing block storage replication solution for Linux, designed primarily to deliver high-performance, high‑availability (HA) data services by mirroring local block devices between nodes in real time, either synchronously or asynchronously. Implemented deep in the Linux kernel as a virtual block‑device driver, DRBD ensures local read performance with efficient write‑through replication to peer(s). User‑space utilities like drbdadm, drbdsetup, and drbdmeta enable declarative configuration, metadata management, and administration across installations. Originally built for two‑node HA clusters, DRBD 9.x extends support to multi‑node replication and integration into software‑defined storage (SDS) systems such as LINSTOR, making it suitable for cloud‑native environments.
    Starting Price: Free
  • 3
    NGINX
    NGINX Open Source: The open source web server that powers more than 400 million websites. NGINX Plus is a software load balancer, web server, and content cache built on top of open source NGINX. Use NGINX Plus instead of your hardware load balancer and get the freedom to innovate without being constrained by infrastructure. Save more than 80% compared to hardware ADCs, without sacrificing performance or functionality. Deploy anywhere: public cloud, private cloud, bare metal, virtual machines, and containers. Save time by performing common tasks through the built‑in NGINX Plus API. From NetOps to DevOps, modern app teams need a self‑service, API‑driven platform that integrates easily into CI/CD workflows to accelerate app deployment – whether your app has a hybrid or microservices architecture – and makes app lifecycle management easier.
  • 4
    DxEnterprise
    DxEnterprise is multi-platform Smart Availability software built on patented technology for Windows Server, Linux and Docker. It can be used to manage a variety of workloads at the instance level—as well as Docker containers. DxEnterprise (DxE) is particularly optimized for native or containerized Microsoft SQL Server deployments on any platform. It is also adept at management of Oracle on Windows. In addition to Windows file shares and services, DxE supports any Docker container on Windows or Linux, including Oracle, MySQL, PostgreSQL, MariaDB, MongoDB, and other relational database management systems. It also supports cloud-native SQL Server availability groups (AGs) in containers, including support for Kubernetes clusters, across mixed environments and any type of infrastructure. DxE integrates seamlessly with Azure shared disks, enabling optimal high availability for clustered SQL Server instances in the cloud.
  • 5
    SIOS DataKeeper

    SIOS DataKeeper

    SIOS Technology Corp.

    SIOS DataKeeper is a host‑based, block‑level replication solution that delivers real‑time, synchronous or asynchronous redundancy for Windows Server environments, integrating seamlessly with Windows Server Failover Clustering (WSFC). It enables "SANless" clusters—eliminating dependency on shared‑storage arrays—by replicating data across local, virtual, or cloud servers, including VMware, Hyper‑V, AWS, Azure, and Google Cloud Platform, while offering optimized performance without requiring hardware accelerators or compression devices. Once installed, it provides a new SIOS DataKeeper Volume resource in WSFC, supporting geographically dispersed clusters via cross‑subnet failover and configurable heartbeat parameters. Built-in WAN optimization and efficient compression maximize bandwidth use over local and wide‑area networks.
  • 6
    SIOS LifeKeeper

    SIOS LifeKeeper

    SIOS Technology Corp.

    SIOS LifeKeeper for Windows is a comprehensive high-availability and disaster‑recovery solution that integrates failover clustering, continuous application monitoring, data replication, and flexible recovery policies to deliver 99.99 % uptime for Microsoft Windows Server environments—whether physical, virtual, cloud, hybrid‑cloud, or multicloud. Administrators can build SAN‑based or SANless clusters using a variety of storage types (direct‑attached SCSI, iSCSI, Fibre Channel, or local disk) and choose between local or remote standby servers that support both high availability and disaster recovery. LifeKeeper offers real‑time block‑level replication via bundled DataKeeper, with WAN‑optimized performance that includes nine levels of compression, bandwidth throttling, and integrated WAN acceleration, ensuring efficient replication across cloud regions or over WAN without hardware accelerators.
  • 7
    IBM Z System Automation
    IBM Z System Automation is a NetView-based application that provides a single control point for a full range of system management functions. It plays a crucial role in supplying high-end automation solutions. IBM Z System Automation monitors, controls, and automates an extensive range of system elements spanning your enterprise's hardware and software resources. IBM Z System Automation is a policy-based, self-healing, high-availability solution designed to optimize the efficiency and availability of critical systems and applications. It reduces administrative and operational tasks, customization and programming effort, and automation implementation time and costs associated with Parallel Sysplex and policy-based automation. Using tight integration with Geographically Dispersed Parallel Sysplex (GDPS), IBM Z System Automation provides sophisticated disaster recovery capabilities for IBM Z systems.
  • 8
    Libelle BusinessShadow
    With our Libelle BusinessShadow solution for disaster recovery and high availability, you can mirror databases and other application systems with a time delay. Your company is thus protected not only from the consequences of hardware and application errors, but also from the consequences of elemental damage, sabotage, or data loss due to human error. Our patented and dynamically adjustable time funnel temporarily stores the change logs before they are mirrored to the standby system. Switching over to this system in the event of an error or even maintenance can thus be carried out with impressive speed and without any fuss. The time funnel temporarily stores logs before they reach the standby system. You can quickly and easily switch to an error-free state. Your data is up to date and consistent, as it does not have to be laboriously reverted from a backup, but is temporarily stored in the time funnel.
  • 9
    everRun

    everRun

    Marathon Technologies

    Most companies today have a variety of mixed workloads, with different levels of business criticality. The smartest organizations are sizing and designing their IT infrastructure to match the availability requirements of their applications, and paying only for what they need. Fault-tolerant systems for those applications that must work 24/7/365. High availability systems where up to 4 hours of downtime could be acceptable. everRun simplifies the process of meeting your changing availability requirements. A highly versatile, yet affordable and continuously available software solution, everRun , combined with industry-standard x86 systems, quickly and easily protects your virtualized data and workloads. Use everRun to quickly and cost-effectively deliver the levels of continuous availability you need, when and where you need it.
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