Best High Availability Cluster Solutions with a Free Trial of 2025

Percona XtraDB Cluster is an open-source, high availability, MySQL clustering solution. It helps enterprises reduce unexpected downtime and data losses, lower costs, and improve performance and scalability in their database environments. PXC supports critical business applications in the most demanding public and private cloud environments. Percona XtraDB Cluster, (PXC), preserves, secures and protects data as well as revenue streams, by providing the highest availability for business-critical applications. PXC can help you reduce costs, eliminate license fees, and meet budget constraints. Our integrated tools allow you to optimize, maintain, monitor, and monitor your cluster. This allows you to get the most from your MySQL environment.

ScaleGrid is a fully managed Database-as-a-Service (DBaaS) platform that helps you automate your time-consuming database administration tasks both in the cloud and on-premises. ScaleGrid makes it easy to provision, monitor, backup, and scale open-source databases. It offers advanced security, high availability, query analysis, and troubleshooting support to improve your deployments' performance. The following databases are supported: - MySQL - PostgreSQL - Redis™. - MongoDB®, database - Greenplum™ (coming soon) ScaleGrid supports both public and privately-owned clouds such as AWS, Azure and Google Cloud Platform (GCP), DigitalOcean and Linode, Oracle Cloud Infrastructure, (OCI), VMware, and OpenStack. ScaleGrid is used by thousands of developers, startups, as well as enterprise customers such as Accenture, Meteor and Atlassian. It handles all your database operations at any scale, so you can concentrate on your application performance.

ClusterControl is a multi-cloud hybrid database ops orchestration platform that supports MongoDB and Elasticsearch as well as Redis, TimescaleDB and SQL Server on Linux. It also supports Galera Cluster, PostgreSQL and MySQL in cloud and on-premises environments. It can handle all aspects of the lifecycle, including deployment, failover, backup, and more. It allows organizations to implement the Sovereign DBaaS model with its full suite of databases and ops features. ClusterControl is the ideal solution for organizations who need to run large-scale, open source database operations reliably but don't want to be restricted by traditional DBaaS providers. It allows you to choose your environment, stability of licenses, and gives you DB access.

NGINX Open Source is the web server that supports over 400 million websites globally. Built upon this foundation, NGINX Plus serves as a comprehensive software load balancer, web server, and content caching solution. By opting for NGINX Plus instead of traditional hardware load balancers, organizations can unlock innovative possibilities without being limited by their infrastructure, achieving cost savings of over 80% while maintaining high performance and functionality. It can be deployed in a variety of environments, including public and private clouds, bare metal, virtual machines, and container setups. Additionally, the integrated NGINX Plus API simplifies the execution of routine tasks, enhancing operational efficiency. For today's NetOps and DevOps teams, there is a pressing need for a self-service, API-driven platform that seamlessly integrates with CI/CD workflows, facilitating faster app deployments regardless of whether the application utilizes a hybrid or microservices architecture, which ultimately streamlines the management of the application lifecycle. In a rapidly evolving technological landscape, NGINX Plus stands out as a vital tool for maximizing agility and optimizing resource utilization.

HAProxy Enterprise, the industry's most trusted software load balancer, is HAProxy Enterprise. It powers modern application delivery at all scales and in any environment. It provides the highest performance, observability, and security. Load balance can be determined by round robin or least connections, URI, IP addresses, and other hashing methods. Advanced decisions can be made based on any TCP/IP information, or HTTP attribute. Full logical operator support is available. Send requests to specific application groups based on URL, file extension, client IP, client address, health status of backends and number of active connections. Lua scripts can be used to extend and customize HAProxy. TCP/IP information and any property of the HTTP request (cookies headers, URIs, etc.) can be used to maintain users' sessions.

NEC’s EXPRESSCLUSTER software offers a robust and cost-effective way to ensure uninterrupted business operations through high availability and disaster recovery capabilities. It effectively mitigates risks of data loss and system failures by enabling seamless failover and data synchronization between servers, without the need for expensive shared storage solutions. With a strong presence in over 50 countries and a market-leading position in the Asia Pacific region for more than eight years, EXPRESSCLUSTER has been widely adopted by thousands of companies worldwide. The platform integrates with numerous databases, email systems, ERP platforms, virtualization environments, and cloud providers like AWS and Azure. EXPRESSCLUSTER continuously monitors system health, including hardware, network, and application status, to provide instant failover in case of disruptions. Customers report significant improvements in operational uptime, disaster resilience, and data protection, contributing to business efficiency. This software is backed by decades of experience and a deep understanding of enterprise IT needs. It delivers peace of mind to businesses that rely on critical systems to remain online at all times.

DxEnterprise is a versatile Smart Availability software that operates across multiple platforms, leveraging its patented technology to support Windows Server, Linux, and Docker environments. This software effectively manages various workloads at the instance level and extends its capabilities to Docker containers as well. DxEnterprise (DxE) is specifically tuned for handling native or containerized Microsoft SQL Server deployments across all platforms, making it a valuable tool for database administrators. Additionally, it excels in managing Oracle databases on Windows systems. Beyond its compatibility with Windows file shares and services, DxE offers support for a wide range of Docker containers on both Windows and Linux, including popular relational database management systems such as Oracle, MySQL, PostgreSQL, MariaDB, and MongoDB. Furthermore, it accommodates cloud-native SQL Server availability groups (AGs) within containers, ensuring compatibility with Kubernetes clusters and diverse infrastructure setups. DxE's seamless integration with Azure shared disks enhances high availability for clustered SQL Server instances in cloud environments, making it an ideal solution for businesses seeking reliability in their database operations. Its robust features position it as an essential asset for organizations aiming to maintain uninterrupted service and optimal performance.

In the event of an emergency or disaster, quickly switch to your on-premise or cloud backup server, allowing your business operations to resume in just a matter of minutes. Utilize your secondary system to handle nightly backups, execute queries, and carry out planned maintenance tasks without disrupting your primary production setup. You have the flexibility to replicate either your entire production environment or just specific libraries and programs, ensuring that your data is accessible on the target server almost immediately. With the use of remote journaling combined with a high-speed apply routine, Robot HA is capable of replicating an astounding 188 million journal transactions per hour, regardless of the distance—whether physical or virtual—and applies the data instantaneously upon receipt, ensuring that your hot backup remains a real-time reflection of your production environment. This system provides you with the reassurance that you can initiate a role swap whenever necessary. You have the option to manually trigger an audit for the role swap whenever you deem it necessary or schedule it to occur at regular intervals. Additionally, the audit can be customized to focus on the objects that are most critical to your data center, thereby enhancing the overall reliability of your backup strategy and ensuring your business's resilience.

NGINX Plus serves as a software load balancer, reverse proxy, web server, and content cache, equipped with the enterprise-level features and support that users anticipate. This solution is favored by modern application infrastructure and development teams for its efficiency. Beyond being recognized as one of the fastest web servers, NGINX Plus enhances the beloved attributes of NGINX Open Source by incorporating enterprise-grade functionalities such as high availability, active health checks, DNS service discovery, session persistence, and a RESTful API framework. It stands out as a cloud-native, user-friendly reverse proxy, load balancer, and API gateway. Whether your goal is to enhance monitoring capabilities, bolster security measures, or manage Kubernetes container orchestration, NGINX Plus ensures you receive the exceptional support synonymous with the NGINX brand. Additionally, it offers scalable and dependable high availability, equipped with monitoring tools to assist in debugging and diagnosing intricate application architectures. With active health checks, NGINX Plus continually monitors the status of upstream servers, allowing teams to anticipate and address potential issues before they escalate.

Our technology allows you create a hosted private cloud with all the features in just 45 seconds. Imagine it as the "first private cloud as a services". Cloud Core is the foundation of all hosted private clouds. OpenMetal Cloud Core is a hyperconverged set up of 3 hosted servers, of your choice of hardware type. OpenStack and Ceph power your cloud. This includes everything from Compute/VMs, Block Storage, powerful software defined networks to easy-to-deploy Kubernetes. Plus, tooling for Day 2 Operations, with built-in monitoring, all packaged up in a modern web portal. OpenMetal private clouds are API first systems that enable teams to use infrastructure like code. Terraform is recommended. Both CLI and GUI are available by default.

Arctera InfoScale is a high-availability and disaster recovery solution that provides real-time resiliency for businesses across all applications and infrastructure layers. By offering automated recovery and immutable data checkpoints, InfoScale helps companies eliminate downtime and reduce recovery times by up to 98%. The platform ensures complete protection from cyber disruptions by encrypting production data, blocking unauthorized access, and preventing data exfiltration. It supports hybrid cloud deployments, enabling businesses to move workloads with agility and reduce the risk of service disruptions. InfoScale’s flexibility and scalability make it ideal for companies looking to optimize their disaster recovery strategies and ensure critical services are always available. With robust support for containerized applications and open-source platforms, InfoScale guarantees business continuity across diverse environments.

Oracle Real Application Clusters (RAC) represents a distinctive and highly available database architecture designed for scaling both reads and writes seamlessly across diverse workloads such as OLTP, analytics, AI data, SaaS applications, JSON, batch processing, text, graph data, IoT, and in-memory operations. It can handle intricate applications with ease, including those from SAP, Oracle Fusion Applications, and Salesforce, while providing exceptional performance. By utilizing a unique fused cache across servers, Oracle RAC ensures the fastest local data access, delivering the lowest latency and highest throughput for all data requirements. The system's ability to parallelize workloads across CPUs maximizes throughput, and Oracle's innovative storage design facilitates effortless online storage expansion. Unlike many databases that rely on public cloud infrastructure, sharding, or read replicas for enhancing scalability, Oracle RAC stands out by offering superior performance with minimal latency and maximum throughput straight out of the box. Furthermore, this architecture is designed to meet the evolving demands of modern applications, making it a future-proof choice for organizations.

Failover Clustering in Windows Server (and Azure Local) allows a collection of independent servers to collaborate, enhancing both availability and scalability for clustered roles, which were previously referred to as clustered applications and services. These interconnected nodes utilize a combination of hardware and software solutions, ensuring that if one node encounters a failure, another node seamlessly takes over its responsibilities through an automated failover mechanism. Continuous monitoring of clustered roles ensures that if they cease to function properly, they can be restarted or migrated to uphold uninterrupted service. Additionally, this feature includes support for Cluster Shared Volumes (CSVs), which create a cohesive, distributed namespace and enable reliable shared storage access across all nodes, thereby minimizing potential service interruptions. Common applications of Failover Clustering encompass high‑availability file shares, SQL Server instances, and Hyper‑V virtual machines. This functionality is available on Windows Server versions 2016, 2019, 2022, and 2025, as well as within Azure Local environments, making it a versatile choice for organizations looking to enhance their system resilience. By leveraging Failover Clustering, organizations can ensure their critical applications remain available even in the event of hardware failures.

SIOS DataKeeper is a block-level replication solution tailored for host-based environments, providing real-time redundancy either synchronously or asynchronously for Windows Server setups, and it integrates effortlessly with Windows Server Failover Clustering (WSFC). This innovative solution facilitates the creation of "SANless" clusters, removing the need for shared-storage systems by enabling data replication across various local, virtual, or cloud servers such as VMware, Hyper-V, AWS, Azure, and Google Cloud Platform, all while ensuring optimized performance without the necessity for specialized hardware accelerators or compression tools. After installation, it introduces a new SIOS DataKeeper Volume resource within WSFC, allowing for the support of geographically distributed clusters through cross-subnet failover and customizable heartbeat settings. Additionally, it features built-in WAN optimization and effective compression to enhance bandwidth utilization over both local and wide-area networks, thereby improving overall network efficiency. This combination of features makes SIOS DataKeeper an excellent choice for organizations looking to enhance their data availability without the complexities of traditional storage solutions.

SIOS LifeKeeper for Windows is an all-encompassing solution designed for high availability and disaster recovery, seamlessly combining features like failover clustering, continuous monitoring of applications, data replication, and adaptable recovery policies to achieve an impressive 99.99% uptime for various Microsoft Windows Server environments, including physical, virtual, cloud, hybrid-cloud, and multicloud setups. System administrators have the flexibility to construct SAN-based or SANless clusters utilizing multiple storage options, such as direct-attached SCSI, iSCSI, Fibre Channel, or local disks, while also selecting between local or remote standby servers that cater to both high availability and disaster recovery requirements. With its real-time block-level replication capabilities provided through the integrated DataKeeper, LifeKeeper offers WAN-optimized performance, which features nine distinct levels of compression, bandwidth throttling, and built-in WAN acceleration, guaranteeing effective data replication across different cloud regions or over WAN networks without relying on additional hardware accelerators. This robust solution not only enhances operational resilience but also simplifies the management of complex IT infrastructures. Ultimately, SIOS LifeKeeper stands out as a vital tool for organizations aiming to maintain seamless service continuity and safeguard their valuable data assets.