--- canonical: https://safekit.evidian.com/products/high-availability-software-for-application-clustering/hyper-v-replication-automatic-failover-load-balancing/safekit-quick-installation-guide-with-hyper-v/ --- Hyper-V High Availability with SafeKit: Install the hyperv.safe Module for Failover - SafeKit HA [![Evidian Logo](/wp-content/uploads/2026/01/eviden-logo-black-265-54.png)](https://eviden.com) * [SafeKit](/products/high-availability-software-for-application-clustering/) + - * SafeKit --- * [Home SafeKit](https://safekit.evidian.com/) * [Elevator pitch](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/high-availability-software-ha-cluster-windows-linux/) * [Customer use cases](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/#safekit-use-cases) - * Use cases --- * [Best/Worst Use Cases](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/best-worst-use-cases-high-availability/) * [OEM use case for a software publisher](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/application-clustering-software/) * [Distributed Enterprise use case](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/business-continuity-software/) * [Remote sites and disaster recovery use case](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/business-continuity-and-disaster-recovery-software/) - * High Availability in Physical Security Market --- * [Physical Security Software](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/physical-security-software-redundancy/) * [Video Management Software (VMS)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/video-management-software-vms-redundancy/) * [Electronic Access Control Software (EACS)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/electronic-access-control-software-eacs-redundancy/) * [Building Management System Software (BMS)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/building-management-system-software-bms-redundancy/) * [SCADA Software](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/scada-software-redundancy-high-availability/) * [Solutions](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/cluster-configuration/) + - * New application (real-time replication and failover) --- * [Windows (mirror.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/windows-high-availability-software-synchronous-replication-failover/) * [Linux (mirror.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/linux-high-availability-software-synchronous-replication-failover/) * New application (network load balancing and failover) --- * [Windows (farm.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/windows-load-balancing-failover/) * [Linux (farm.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/linux-load-balancing-failover/) - * Full VM or container real-time replication and failover --- * [Hyper-V (hyperv.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/hyper-v-replication-automatic-failover-load-balancing/) * [KVM (kvm.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/linux-kvm-high-availability-replication-automatic-failover-load-balancing/) * [Docker (mirror.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/docker-container-high-availability-cluster-synchronous-replication-failover/) * [Podman (mirror.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/podman-the-simplest-high-availability-cluster-between-two-redundant-servers/) * [Kubernetes (k3s.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/kubernetes-k3s-the-simplest-high-availability-cluster-with-synchronous-replication-and-failover-between-two-redundant-servers/) - * Database (real-time replication and failover) --- * [Microsoft SQL Server (sqlserver.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/sql-server-high-availability-synchronous-replication-failover/) * [PostgreSQL (postgresql.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/postgresql-high-availability-synchronous-replication-failover/) * [Oracle (oracle.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/oracle-high-availability-synchronous-replication-failover/) * [MySQL (mysql.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/mysql-high-availability-synchronous-replication-failover/) * [MariaDB (mysql.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/mariadb-simplest-high-availability-cluster-synchronous-replication-failover-redundant-servers/) * [Firebird (firebird.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/firebird-high-availability-synchronous-replication-failover/) * Web (network load balancing and failover) --- * [Apache (apache\_farm.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/apache-load-balancing-failover-2/) * [Microsoft IIS (iis\_farm.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/iis-load-balancing-failover/) * [NGINX (farm.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/nginx-the-simplest-load-balancing-cluster-with-failover/) - * Amazon AWS --- * [AWS (mirror.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/aws-high-availability-cluster-synchronous-replication-failover/) * [AWS (farm.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/aws-load-balancing-cluster-failover/) * Google GCP --- * [GCP (mirror.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/gcp-high-availability-cluster-synchronous-replication-failover/) * [GCP (farm.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/gcp-load-balancing-cluster-failover/) * Microsoft Azure --- * [Azure (mirror.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/azure-high-availability-cluster-synchronous-replication-failover/) * [Azure (farm.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/azure-load-balancing-cluster-failover/) * Other clouds --- * [All cloud solutions](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/cluster-in-cloud-computing-generic-solution-amazon-aws-microsoft-azure-google-gcp-other-clouds/) * [Cloud (mirror.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/cloud-high-availability-cluster-synchronous-replication-failover/) * [Cloud (farm.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/cloud-load-balancing-cluster-failover/) - * Physical security (real-time replication and failover) --- * [Milestone XProtect (milestone.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/milestone-xprotect-corporate-high-availability-synchronous-replication-failover/) * [Nedap (nedap.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/nedap-high-availability-synchronous-replication-failover/) * [Genetec SQL Server (sqlserver.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/genetec-sql-server-the-simplest-high-availability-cluster-with-synchronous-replication-and-failover-between-two-redundant-servers/) * [Bosch AMS (hyperv.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/bosch-ams-the-simplest-high-availability-cluster-between-two-redundant-servers-without-shared-disk/) * [Bosch BIS (hyperv.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/bosch-bis-the-simplest-high-availability-cluster-between-two-redundant-servers-without-shared-disk/) * [Bosch BVMS (hyperv.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/bosch-bvms-the-simplest-high-availability-cluster-between-two-redundant-servers-without-shared-disk/) * [Hanwha Vision (hyperv.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/hanwha-vision-cluster-without-shared-storage-on-a-san/) * [Hanwha Wisenet (hyperv.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/hanwha-wisenet-wave-the-simplest-high-availability-cluster-between-two-redundant-servers-without-shared-disk/) - * Siemens (real-time replication and failover) --- * [Siemens Siveillance suite (hyperv.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/siemens-siveillance-redundancy-high-availability-cluster-active-active/) * [Siemens Desigo CC (hyperv.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/siemens-desigo-cc-redundancy-high-availability-cluster-active-active/) * [Siemens Siveillance VMS (SiveillanceVMS.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/siemens-siveillance-vms-the-simplest-high-availability-cluster-between-two-redundant-servers/) * [Siemens SiPass (hyperv.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/siemens-sipass-redundancy-high-availability-cluster-active-active/) * [Siemens SIPORT (hyperv.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/siemens-siport-redundancy-high-availability-cluster-active-active/) * [Siemens SIMATIC PCS 7 (hyperv.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/siemens-simatic-pcs-7-redundancy-high-availability-cluster-active-active/) * [Siemens SIMATIC WinCC (hyperv.safe)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/siemens-simatic-wincc-redundancy-high-availability-cluster-active-active/) * [Architectures](#) + - * Basic architectures --- * [Overview](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/high-availability-architectures/) * [Mirror Cluster](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/file-replication-byte-level-with-failover-mirror-cluster/) * [Farm Cluster](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/network-load-balancing-cluster/) * [SafeKit Console](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/safekit-smart-console-your-high-availability-cluster-in-your-pocket/) - * Advanced architectures --- * [Farm+Mirror Cluster](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/clustering-software-load-balancing-mirroring/) * [Active Active Cluster with Replicaton](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/active-active-cluster-real-time-replication/) * [N-1 Cluster](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/n-1-redundancy/) - * Hypervisor architectures --- * [Hyper-V Cluster](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/hyper-v-replication-automatic-failover-load-balancing/) * [KVM Cluster](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/linux-kvm-high-availability-replication-automatic-failover-load-balancing/) - * Container architectures --- * [Docker Cluster](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/docker-container-high-availability-cluster-synchronous-replication-failover/) * [Podman Cluster](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/podman-the-simplest-high-availability-cluster-between-two-redundant-servers/) * [Best practises](#) + - * High availability best practises --- * [High Availability Architectures & Software Clustering Best Practices](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/high-availability-architectures-and-best-practices/) * [Shared Nothing vs. Shared Disk Architecture: Choosing the Best HA Cluster](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/shared-nothing-architecture-vs-shared-disk-architecture/) * [Software clusering vs hardware clustering](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/clustering-software-vs-hardware-clustering/) * [VM HA vs. Application HA: Choose Your Redundancy Level with SafeKit](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/vm-ha-vs-application-ha/) * [High Availability and Disaster Recovery (HADR)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/high-availability-disaster-recovery-hadr/) * [HA Cluster vs. Fault Tolerant System: Choosing the Right Redundancy Strategy](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/high-availability-cluster-vs-fault-tolerant-system/) * [How to Implement Redundant Servers with Simple HA Software](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/how-to-implement-redundant-servers-with-a-simple-software-windows-linux/) - * Replication best practises --- * [Data Replication Techniques for High Availability: A Complete Comparison](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/data-replication-techniques/) * [Synchronous vs. Asynchronous Replication: How SafeKit Ensures Zero Data Loss?](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/synchronous-replication-vs-asynchronous-replication/) * [Byte-Level File Replication vs. Block-Level Disk Replication for HA](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/byte-level-file-replication-vs-block-level-disk-replication/) * [Alternative to SQL Server Always On: HA for Express and Standard Editions](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/alternative-always-on-sql-server-express-standard-editions/) - * Clustering best practises --- * [How a Virtual IP Address (VIP) Works in High Availability Clustering?](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/how-a-virtual-ip-address-works/) * [Handling Power Outages and Network Isolation in a HA Cluster](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/power-outage-and-network-isolation-in-a-cluster/) * [Heartbeat, failover and quorum in a cluster](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/heartbeat-failover-quorum-windows-linux-aix-cluster/) * [SAN vs. NAS Shared Storage for Failover Clustering: A Detailed Comparison](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/san-vs-nas-shared-storage-for-a-failover-cluster/) * [What are RPO and RTO? Definitions, Examples, and HA Strategies](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/what-is-rpo-and-rto-with-examples/) * [Microsoft NLB vs SafeKit network load balancing](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/microsoft-nlb-vmware-multicast-unicast-alternative/) * [Resources](#) + - * Free trial --- * [SafeKit free trial](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/safekit-free-trial/) * [One-month license key](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/high-availability-and-load-balancing-cluster-key/) * [Demonstrations](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/high-availability-solutions-ha-solutions-videos/) * [Support](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/safekit-support/) * [Free Training & Certification](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/safekit-on-line-training/) - * Technical documentations --- * [SafeKit quick installation guides](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/safekit-quick-installation-guides/) * [SafeKit user's guide](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/safekit-user-guide-82/) * [SafeKit release notes](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/safekit-release-notes-8-2/) * [SafeKit SRB](https://safekit.evidian.com/wp-content/uploads/downloads_safekit/version-82/82softwarereleasebulletin.pdf) * [Knowledge Base](https://safekit.evidian.com/wp-content/uploads/downloads_safekit/version-82/knowledge-base.pdf) - * Product information --- * [Flyer](https://safekit.evidian.com/wp-content/uploads/documents/high-availability-overview.pdf) * [White Paper - Product](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/high-availability-white-paper/) * [White Paper - High Availability Guide](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/high-availability-guide/) * [Technical Reference for RFI and RFP](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/high-availability-technical-reference-for-rfi-and-rfp-preparation/) * [Support](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/safekit-support/) * [Price](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/get-a-quote-safekit-en/) * [Contact](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/contact-us-for-safekit/) * [![English](https://safekit.evidian.com/wp-content/uploads/flags/us.png)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/hyper-v-replication-automatic-failover-load-balancing/safekit-quick-installation-guide-with-hyper-v/) [Eviden >](https://eviden.com/) [Products >](https://safekit.evidian.com/products/) [SafeKit: All-in-One SANless High Availability & Application Clustering Software >](https://safekit.evidian.com/) [Simple Hyper-V High Availability Without Shared Storage (SAN) >](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/hyper-v-replication-automatic-failover-load-balancing/) Hyper-V High Availability with SafeKit: Install the hyperv.safe Module for Failover # Hyper-V High Availability with SafeKit: Install the hyperv.safe Module for Failover ## Configuring hyperv.safe for Active/Active VM-Level HA and Shared-Nothing Clustering [๐Ÿง‘ Contact us](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/contact-us-for-safekit/) [๐ŸŽ SafeKit free trial](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/safekit-free-trial/) [๐Ÿ… Free certification](https://training.my.evidian.com/mod/page/view.php?id=712) [๐Ÿ’ฐ Perpetual license cost](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/get-a-quote-safekit-en/) ## High Availability Quick Installation Guide for Hyper-V This guide explains how to set up a **mirror cluster** for Hyper-V using SafeKit, ensuring automatic failover and synchronous replication without the need for shared storage. You can use the SafeKit AI ๐Ÿค– for assistance at any time. ### 1. Overview * **Architecture:** Uses a two-node system (Primary/Secondary). * **Data Protection:** Implements real-time synchronous replication for **zero data loss** (RPO=0). ### 2. Installation * **Software:** Install the SafeKit engine on both servers. * **Module:** Download the pre-configured `hyperv.safe` application module. ### 3. Configuration * **Web Console:** Configure the specific folders containing the Hyper-V files. * **Monitoring:** Start monitoring and protecting the Hyper-V application. ## Overview of the SafeKit / Hyper-V solution The solution is described here: **[Simple Hyper-V High Availability Without Shared Storage (SAN)](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/hyper-v-replication-automatic-failover-load-balancing/)** ## Installation of the SafeKit / Hyper-V solution on Windows (hyperv.safe) ### Prerequisites * Hyper-V role installed on 2 Windows nodes (embedded for free in all Windows versions including Windows for PC). * Critical applications installed inside one or more virtual machines. * Maximum 32 virtual machines per Hyper-V host. * Total replicated data limited to a few terabytes โ€” beyond this, resynchronization time becomes significant. * Minimum 1Gb/s interconnect between nodes (10Gb/s recommended for faster resynchronization). * IP failover requires both nodes on the same LAN or extended LAN (L2) โ€” routed L3 networks not supported (except with [cloud load balancers](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/safekit-user-guide-82/#Cloud)). ### About products under Siemens LMS licensing * To avoid the broken Siemens license on failover, the dongle containing the Siemens key can be put in a USB over IP device (like DIGI AnywhereUSB). * The dongle can also be put in an external PC with the [LMS license server](https://sid.siemens.com/r/A6V10426066/16779394955__2.6_en-US_16791369099) on the PC. * In recent versions of the Siemens licensing system, the license key can be put in the Trusted Platform Module of the VM. ### Package installation on Windows * Download and install the free version of SafeKit on 2 Windows nodes. Note: the free version includes all SafeKit features. At the end of the trial, you can activate permanent license keys without uninstalling the package. * Upon completing the package installation, select **Set console credentials and firewall rules now** and configure a password for the **admin** user of the SafeKit console. **Set the same password on all nodes.** * Exclude from antivirus scans **C:/safekit/** (the default installation directory) and **all replicated folders** that you are going to define. Antiviruses may face detection challenges with SafeKit due to its close integration with the OS, virtual IP mechanisms, real-time replication and restart of critical services. [Download SafeKit (Windows) >](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/safekit-free-trial/) ### Module installation on Windows * Download the hyperv.safe module. The module is free. It contains the files userconfig.xml and the restart scripts. * Put **hyperv.safe** under **C:/safekit/Application\_Modules/generic**. [Download hyperv.safe (Windows) >](https://safekit.evidian.com/wp-content/uploads/downloads_safekit/version-82/modules_windows/hyperv.safe) ## Step by step configuration of the SafeKit / Hyper-V solution ![Warning](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Warning](https://safekit.evidian.com/wp-content/uploads/2022/07/warning-small.png) * The Hyper-V configuration is presented with a virtual machine named `VM1` and containing the application to restart in case of failure. * You will have to repeat this configuration for all VMs that you want to replicate and to restart. * The file system where the VM files replicated by SafeKit are stored must be NTFS; ReFS is not supported. ### 1. Prerequisites For SafeKit replication, all VM1 virtual machine files (configuration file, virtual hard disk, etc.) must be stored in the same folder, even though this is not the default behavior of Hyperโ€‘V (e.g., D:/Repli-Hyper-V/VM1, where VM1 is the name of the virtual machine). If all the files of VM1 are not in the same folder, use Hyper-V manager: * Export VM1 in a folder, for example in D:/Repli-Hyper-V * This export will create a folder D:/Repli-Hyper-V/VM1 containing all VM1 files * Remove VM1 from the inventory of Hyper-V manager * Import VM1, previously exported, into Hyper-V manager ![Warning](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Warning](https://safekit.evidian.com/wp-content/uploads/2022/07/warning-small.png) Take a snapshot or your VM before starting the procedure. ![Warning](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Warning](https://safekit.evidian.com/wp-content/uploads/2022/07/warning-small.png) VM1 must only be created on a single node. The only thing to create on the other node is the VM1 directory (D:/Repli-Hyper-V/VM1). ![Warning](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Warning](https://safekit.evidian.com/wp-content/uploads/2022/07/warning-small.png) Make sure the virtual switch name(s) referenced by the virtual machine exist on both Hyper-V servers and corresponds to the same physical network. ![Warning](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Warning](https://safekit.evidian.com/wp-content/uploads/2022/07/warning-small.png) Hyperโ€‘V module (hyperv.safe) failover may fail if VM migration prerequisites are not met. To detect compatibility issues between Hyperโ€‘V nodes (hardware, network, configuration), see [KB SK-0088 in this document](https://safekit.evidian.com/wp-content/uploads/downloads_safekit/version-82/knowledge-base.pdf). ### 2. Launch the SafeKit console * Launch the web console in a browser on one cluster node by connecting to `http://localhost:9010`. * Enter `admin` as user name and the password defined during installation. You can also run the console in a browser on a workstation external to the cluster. ![Warning](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Warning](https://safekit.evidian.com/wp-content/uploads/2022/07/warning-small.png) The configuration of SafeKit is done on both nodes from a single browser. ![Note](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Note](https://safekit.evidian.com/wp-content/uploads/2022/07/note.png) To secure the web console, see [11. Securing the SafeKit web service](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/safekit-user-guide-82/#https) in the User's Guide. [![Start the SafeKit web console to configure the Hyper-V cluster](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20647%20479'%3E%3C/svg%3E "View full size")![Start the SafeKit web console to configure the Hyper-V cluster](https://safekit.evidian.com/wp-content/uploads/2024/03/01-login-large.png "View full size")](/wp-content/uploads/2024/03/01-login-large.png) ### 3. Configure node addresses * Enter the node IP addresses, press the `Tab key` to check connectivity and fill node names. If either node1 or node2 has a red color, check connectivity of the browser to both nodes and check firewall on both nodes for [troubleshooting](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/safekit-user-guide-82/#Troubleshooting). * Then, click on `Save and apply` to save the configuration. * Check the `Success` โœ… message on both nodes. * If the configuration `Failure` โŒ occurs on one node, open the โ–ผ accordion for that node and review the messages. Note that you can use the SafeKit AI ๐Ÿค– for assistance. ![Note](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Note](https://safekit.evidian.com/wp-content/uploads/2022/07/note.png) If you want, you can add a new `LAN and nodes` ( first โž•) to create a second heartbeat and a dedicated replication network. ![Note](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Note](https://safekit.evidian.com/wp-content/uploads/2022/07/note.png) If you click on `Advanced configuration`, the `cluster.xml` file is displayed. This file is automatically populated by the console and deployed on the nodes. [![Enter the nodes of the Hyper-V cluster](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20757%20690'%3E%3C/svg%3E "View full size")![Enter the nodes of the Hyper-V cluster](https://safekit.evidian.com/wp-content/uploads/2024/03/02-cluster-edit.png "View full size")](/wp-content/uploads/2024/03/02-cluster-edit.png) ### 4. Select a module * In `New module`, click on the `hyperv.safe` module. ![Note](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Note](https://safekit.evidian.com/wp-content/uploads/2022/07/note.png) In the blue banner at the top, ๐Ÿ›œ `node1` represents the console connection node. This node relays requests to `node2` when required. ![Note](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Note](https://safekit.evidian.com/wp-content/uploads/2022/07/note.png) The console looks for `xxx.safe` in the `Application_Modules/generic/` directory on the connection node (`node1`) if you placed a module there during installation. [![Choose the module for Hyper-V](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20755%20686'%3E%3C/svg%3E "View full size")![Choose the module for Hyper-V](https://safekit.evidian.com/wp-content/uploads/2024/03/04-module-new.png "View full size")](/wp-content/uploads/2024/03/04-module-new.png) ### 5. Configure the module * Choose an `Automatic` start of the module at boot without delay. * Normally, you have a single `Heartbeat` network on which the replication is made. But, you can define a private network if necessary (by adding a LAN at step 3). * Put in `VM_PATH`, the root path of the replicated directory (D:/Repli-Hyper-V). * Enter in `VM_NAME`, the name of the virtual machine (VM1). We assume that all VM1 files are in D:/Repli-Hyper-V/VM1 (see [prerequisites](#prerequisite)). This directory will be replicated in real-time by SafeKit. Do not perform partial replication, as failover will not work. The `NORMAL_STOP` and `FORCE_STOP` values can be "`stop`", "`save`" or "`off`": * "`stop`" shutdowns the VM when the module is stopped. * "`save`" saves the current state of the VM (suspend) when the module is stopped. * "`off`" turns off the VM (power off) when the module is stopped. "`stop`" is recommended because it causes the shutdown then the reboot of the VM when the module is stopped and restarted. Thus, if the application inside the VM fails, it is restarted. This will be the case, for example, when switching between primary and secondary roles. ![Note](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Note](https://safekit.evidian.com/wp-content/uploads/2022/07/note.png) You do not need to configure a virtual IP address. VM1 will be rebooted on the secondary Hyper-V with its physical IP address, and this IP address will be rerouted. ![Note](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Note](https://safekit.evidian.com/wp-content/uploads/2022/07/note.png) When you apply the SafeKit configuration, the `Automatic Start Action` of the virtual machine is set to `Nothing` in Hyper-V. This ensures that the VM does not start automatically when the Hyperโ€‘V host starts, but is instead started only when the module itself is started. [![Enter the Hyper-V parameters](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20694%20720'%3E%3C/svg%3E "View full size")![Enter the Hyper-V parameters](https://safekit.evidian.com/wp-content/uploads/2024/03/19-module-hyperv-edit-config-1.png "View full size")](/wp-content/uploads/2024/03/19-module-hyperv-edit-config-1.png) ### 6. Custom checker to detect VM malfunction The custom checker sends heartbeat messages from the host to the VM at regular intervals. It is then the job of the Hyper-V Heartbeat Service installed in the VM to send a response to each of these heartbeat messages. If the Hyper-V Heartbeat Service does not respond to the message (VM locked up, crashed or ceased to function), then the custom checker executes an action to restart the VM on the same Hyper-V node or on the other. * Click on `Checkers / Custom` (see image). * Just set a name of your choice in `Resource name` (example VM1). `Resource name` identifies the virtual machine with a resource name in SafeKit: `custom.VM1`. * With `restart` in `Action`, the VM is restarted on the same Hyper-V node. After 3 unsuccessful restarts in 24 hours, the SafeKit hyperv module stops on the primary node and there is a failover of the VM on the secondary node. * If you set `stopstart` in `Action`, there is a direct failover on the other Hyper-V node as soon as the VM does not respond to heartbeats. ![Note](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Note](https://safekit.evidian.com/wp-content/uploads/2022/07/note.png) For maintenance, if you want to stop the virtual machine, the custom checker will restart it automatically. To avoid that, you can temporarly [suspend the checker ๐Ÿ–ผ๏ธ](/wp-content/uploads/2024/04/safekit-disable-checkers.png). Or you can remove it by deleting the configuration line in the console. Itโ€™s the same when you want to restore a checkpoint. Hyper-V will stop the VM to perform the operation, and the VM checker may react negatively by automatically restarting the VM. To avoid this, [suspend the checker ๐Ÿ–ผ๏ธ](/wp-content/uploads/2024/04/safekit-disable-checkers.png) before proceeding with the operation. [![Enter the Hyper-V custom checker parameters](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20751%20910'%3E%3C/svg%3E "View full size")![Enter the Hyper-V custom checker parameters](https://safekit.evidian.com/wp-content/uploads/2024/04/safekit-custom-checker-hyperv.png "View full size")](/wp-content/uploads/2024/04/safekit-custom-checker-hyperv.png) ### 7. Edit scripts (optional) * Do not edit scripts. ### 8. Communication encryption (optional) * Keep encryption of communication between nodes. [![Communication encryption of the Hyper-V module](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20563%20217'%3E%3C/svg%3E "View full size")![Communication encryption of the Hyper-V module](https://safekit.evidian.com/wp-content/uploads/2024/03/07-module-encryption.png "View full size")](/wp-content/uploads/2024/03/07-module-encryption.png) ### 9. Save and apply * `Save and apply` the configuration and scripts on both nodes. [![Save and apply the Hyper-V module configuration](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20516%20341'%3E%3C/svg%3E "View full size")![Save and apply the Hyper-V module configuration](https://safekit.evidian.com/wp-content/uploads/2024/03/08-module-save.png "View full size")](/wp-content/uploads/2024/03/08-module-save.png) ### 10. Verify successful configuration * Check the `Success` โœ… message on both nodes and click on `Monitor modules`. * If the configuration `Failure` โŒ occurs on one node, open the โ–ผ accordion for that node and review the messages. Note that you can use the SafeKit AI ๐Ÿค– for assistance. [![Check the Hyper-V module configuration success](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20737%20255'%3E%3C/svg%3E "View full size")![Check the Hyper-V module configuration success](https://safekit.evidian.com/wp-content/uploads/2024/03/09-module-save-check.png "View full size")](/wp-content/uploads/2024/03/09-module-save-check.png) ### 11. Start the node with up-to-date data * If node 1 has the up-to-date replicated directory for `VM1/`, select it and โ‹ฏ `Force start` โ–ถ `As primary`. When node 2 will be started, all data will be copied from node 1 to node 2. ![Warning](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Warning](https://safekit.evidian.com/wp-content/uploads/2022/07/warning-small.png) If you make the wrong choice, you run the risk of synchronizing outdated data on both nodes. ![Warning](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Warning](https://safekit.evidian.com/wp-content/uploads/2022/07/warning-small.png) It is also assumed that `VM1` is stopped on node 1 so that SafeKit installs the replication mechanisms and then starts `VM1` in the `start_prim` script. ![Warning](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Warning](https://safekit.evidian.com/wp-content/uploads/2022/07/warning-small.png) Use `Start` for subsequent starts: SafeKit retains the most up-to-date server. Starting `As primary` is a special start-up the first time or during exceptional operations. [![Start as primary the Hyper-V node with the up-to-date data](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20725%20568'%3E%3C/svg%3E "View full size")![Start as primary the Hyper-V node with the up-to-date data](https://safekit.evidian.com/wp-content/uploads/2024/03/10-monitoring-mirror-stop-stop-prim.png "View full size")](/wp-content/uploads/2024/03/10-monitoring-mirror-stop-stop-prim.png) ### 12. Wait for the transition to ALONE (green) * Node 1 should reach the ALONE (green) state, which means that the `start_prim` script has been executed on node 1. ![Warning](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Warning](https://safekit.evidian.com/wp-content/uploads/2022/07/warning-small.png) If ALONE (green) is not reached or if VM1 is not started, analyze why with the [module log ๐Ÿ–ผ๏ธ](/wp-content/uploads/2024/03/24-module-log-script.png) of node 1. * Click the ๐Ÿ” **log** icon of `node1` to open the module log and look for error messages such as a checker detecting an error and stopping the module. * Click on `start_prim` in the log: output messages of the script are displayed on the right and errors can be detected such as VM1 incorrectly started. * Use the SafeKit AI ๐Ÿค– for assistance with log messages. ![Warning](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Warning](https://safekit.evidian.com/wp-content/uploads/2022/07/warning-small.png) If the cluster is in `WAIT (red) not uptodate, STOP (red) not uptodate` state, stop the WAIT node and [force its start as primary ๐Ÿ–ผ๏ธ](/wp-content/uploads/2024/03/10-monitoring-mirror-stop-stop-prim.png). [![The first Hyper-V node starts as primary and becomes ALONE](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20624%20455'%3E%3C/svg%3E "View full size")![The first Hyper-V node starts as primary and becomes ALONE](https://safekit.evidian.com/wp-content/uploads/2024/03/12-monitoring-alone-stop.png "View full size")](/wp-content/uploads/2024/03/12-monitoring-alone-stop.png) ### 13. Start node 2 * โ‹ฏ `Start` node 2 with its contextual menu. * Wait for the SECOND (green) state. ![Note](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Note](https://safekit.evidian.com/wp-content/uploads/2022/07/note.png) Node 2 stays in the SECOND (orange) state while resynchronizing the replicated directories (copy from node 1 to node 2). This may take a while depending on the size of files to resynchronize in replicated directories and the network bandwidth. To see the progress of the copy, see the [module log ๐Ÿ–ผ๏ธ](/wp-content/uploads/2024/03/27-module-log-reintegration.png) and the [replication resources ๐Ÿ–ผ๏ธ](/wp-content/uploads/2024/03/26-replication-resources-reintegration.png) of node 2. Use the SafeKit AI ๐Ÿค– for assistance with log messages. ![Note](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Note](https://safekit.evidian.com/wp-content/uploads/2022/07/note.png) When using Hyper-V differencing disks, only the differencing disk needs resynchronization after the initial sync, saving time for large virtual hard disks. [![Start the Hyper-V node 2](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20620%20686'%3E%3C/svg%3E "View full size")![Start the Hyper-V node 2](https://safekit.evidian.com/wp-content/uploads/2024/03/13-monitoring-alone-stop-start.png "View full size")](/wp-content/uploads/2024/03/13-monitoring-alone-stop-start.png) ### 14. Verify that the cluster is operational * Check that the cluster is green/green with `VM1` running on the PRIM node and not running on the SECOND node. Only changes inside files are replicated in real time in this state. [![The Hyper-V node 2 is SECOND (green)](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20604%20498'%3E%3C/svg%3E "View full size")![The Hyper-V node 2 is SECOND (green)](https://safekit.evidian.com/wp-content/uploads/2024/03/14-monitoring-prim-second.png "View full size")](/wp-content/uploads/2024/03/14-monitoring-prim-second.png) ### 15. Testing * Stop the PRIM node by scrolling down its contextual menu and clicking `Stop`. * Verify that there is a failover on the SECOND node which should become ALONE (green). * Check with Hyper-V manager that `VM1` is running on node 2. ![Warning](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Warning](https://safekit.evidian.com/wp-content/uploads/2022/07/warning-small.png) If ALONE (green) is not reached on node2 or if VM1 is not started, analyze why with the [module log ๐Ÿ–ผ๏ธ](/wp-content/uploads/2024/03/38-module-log-script-second.png) of node 2. * Click the ๐Ÿ” **log** icon of `node2` to open the module log and look for error messages such as a checker detecting an error and stopping the module. * Click on `start_prim` in the log: output messages of the script are displayed on the right and errors can be detected such as VM1 incorrectly started. * Use the SafeKit AI ๐Ÿค– for assistance with log messages. ![Warning](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Warning](https://safekit.evidian.com/wp-content/uploads/2022/07/warning-small.png) As the `start_prim` script imports the virtual machine on node 2, the failover can fail because of [Hyper-V settings (see KB SK-0088 in this document)](https://safekit.evidian.com/wp-content/uploads/downloads_safekit/version-82/knowledge-base.pdf). ![Warning](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Warning](https://safekit.evidian.com/wp-content/uploads/2022/07/warning-small.png) If everything is okay, initiate a start on node1, which will resynchronize the replicated directories from node2. If things go wrong, stop node2 and [force the start as primary ๐Ÿ–ผ๏ธ](/wp-content/uploads/2024/03/10-monitoring-mirror-stop-stop-prim.png) of node1, which will restart with its locally healthy data at the time of the stop. ![Note](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Note](https://safekit.evidian.com/wp-content/uploads/2022/07/note.png) Note that you have a ๐Ÿ•’ **[timeline ๐Ÿ–ผ๏ธ](https://safekit.evidian.com/wp-content/uploads/2026/05/safekit-console-timeline.png)** that can be helpful to understand what happens in the cluster. [![Stop the Hyper-V module on the PRIM server](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20607%20586'%3E%3C/svg%3E "View full size")![Stop the Hyper-V module on the PRIM server](https://safekit.evidian.com/wp-content/uploads/2024/03/16-monitoring-prim-second-stop.png "View full size")](/wp-content/uploads/2024/03/16-monitoring-prim-second-stop.png) ### 16. If necessary, configure a splitbrain checker * See [What are the different scenarios in case of network isolation in a cluster?](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/power-outage-and-network-isolation-in-a-cluster/) to know if you need to configure a splitbrain checker. * Go to the module configuration and click on `Checkers / Splitbrain` (see image) to edit the splitbrain parameters. * `Save and apply` the new configuration to redeploy it on both nodes (module must be stopped on both nodes to save and apply). **Parameters**: * `Resource name` identifies the witness with a resource name: `splitbrain.witness`. You can change this value to identify the witness. * `Witness address` is the argument for a ping when a node goes from PRIM to ALONE or from SECOND to ALONE. Change this value with the IP of the witness (a robust element, typically a router). * Note: you can set several IPs separated by white spaces. Pay attention that the IP addresses must be accessible from one node but not from the other in the event of network isolation. [![Enter the Hyper-V splitbrain parameters](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20690%20952'%3E%3C/svg%3E "View full size")![Enter the Hyper-V splitbrain parameters](https://safekit.evidian.com/wp-content/uploads/2024/04/safekit-split-brain-checker.png "View full size")](https://safekit.evidian.com/wp-content/uploads/2024/04/safekit-split-brain-checker.png) ### 17. Automatic restart if a critical service fails inside the VM If you want an automatic restart or failover when a critical service inside the VM fails, you can configure the Recovery properties of the service (see image). First you must configure the [VM custom checker](#vm-checker) previously described. And then in Microsoft Service Manager inside the VM, select your critical service and in the recovery property of the service, you just have to configure shutdown of the VM when the critical service fails. For that, in the Recovery options of your critical service, choose "**Run a Program**" on failures and in Run program options, set"**C:/Windows/System32/shutdown.exe**" and in "Command line parameters", set **/s /c "service fails"**. Of course, you can implement more subtle recovery with your own scripts. But just be aware that shutting down the VM will enable the custom checker in the host. The custom checker will detect that the Hyper-V heartbeat is no more responding and will restart the VM on the same Hyper-V server or will make a failover on the other Hyper-V server (depending on its configuration). To test the feature, use Task Manager and kill the process (End task) associated to the critical service. A clean stop of the service through Service Manager or the "net stop" command does not trigger the recovery action inside Windows Service Manager. [![Hyper-V VM critical services failover of Hyper-V module](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20842%20618'%3E%3C/svg%3E "View full size")![Hyper-V VM critical services failover of Hyper-V module](https://safekit.evidian.com/wp-content/uploads/2023/11/hyperv-critical-service.png "View full size")](/wp-content/uploads/2023/11/hyperv-critical-service.png) ### 18. Support * For getting support, take 2 SafeKit `Snapshots` (2 .zip files), one for each node. ![Note](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%2025%2025'%3E%3C/svg%3E)![Note](https://safekit.evidian.com/wp-content/uploads/2022/07/note.png) [More information on the support here](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/safekit-support/). [![Take the Hyper-V snaphots for support](data:image/svg+xml,%3Csvg%20xmlns='http://www.w3.org/2000/svg'%20viewBox='0%200%20607%20443'%3E%3C/svg%3E "View full size")![Take the Hyper-V snaphots for support](https://safekit.evidian.com/wp-content/uploads/2024/03/30-snapshots-mirror.png "View full size")](/wp-content/uploads/2024/03/30-snapshots-mirror.png) ## Demonstration of the SafeKit / Hyper-V solution ## ๐Ÿ” SafeKit High Availability Navigation Hub Explore SafeKit: Features, technical videos, documentation, and free trial | Resource Type | Description | Direct Link | | --- | --- | --- | | **Key Features** | Why Choose SafeKit for Simple and Cost-Effective High Availability? | [See Why Choose SafeKit for High Availability](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/#why-choose-safekit-for-ha "Discover SafeKit features for simple and cost-effective high availability") | | **Use Cases** | Explore How SafeKit Ensures the High Availability of Critical Infrastructure | [See All Use Cases](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/#safekit-use-cases "Explore SafeKit high availability use cases") | | **Deployment Model** | All-in-One SANless HA: Shared-Nothing Software Clustering | [See SafeKit All-in-One SANless HA](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/#all-in-one-sanless-ha "Learn about all-in-one SANless high availability with shared-nothing software clustering") | | **HA Strategies** | SafeKit: Infrastructure (VM) vs. Application-Level High Availability | [See SafeKit HA & Redundancy: VM vs. Application Level](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/#safekit-ha-redundancy-choices "Compare VM-level redundancy with SafeKit application-level high availability strategies") | | **Technical Specifications** | Technical Limitations for SafeKit Clustering | [See SafeKit High Availability Limitations](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/#safekit-ha-limitations "Technical requirements and limitations for SafeKit application clustering") | | **Proof of Concept** | SafeKit: High Availability Configuration & Failover Demos | [See SafeKit Failover Tutorials](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/#safekit-failover-tutorials "Step-by-step videos on SafeKit high availability, from installation to automated failover") | | **Architecture** | How the SafeKit Mirror Cluster works (Real-Time Replication & Failover) | [See SafeKit Mirror Cluster: Real-Time Replication & Failover](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/#safekit-mirror-cluster "See technical architecture and failover mechanism of SafeKit Mirror Cluster") | | **Architecture** | How the SafeKit Farm Cluster works (Network Load Balancing & Failover) | [See SafeKit Farm Cluster: Network Load Balancing & Failover](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/#safekit-farm-cluster "Technical overview of SafeKit Farm Cluster architecture with network load balancing") | | **Competitive Advantages** | Comparison: SafeKit vs. Traditional High Availability (HA) Clusters | [See SafeKit vs. Traditional HA Cluster Comparison](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/#safekit-ha-comparison "Detailed comparison of SafeKit software vs traditional hardware-based HA clusters") | | **Technical Resources** | SafeKit High Availability: Documentation, Downloads & Trial | [See SafeKit HA Free Trial & Technical Documentation](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/#safekit-ha-technical-resources "Access SafeKit free trial, technical documentation, and high availability white papers") | | **Pre-configured Solutions** | SafeKit Application Module Library: Ready-to-Use HA Solutions | [See SafeKit High Availability Application Modules](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/#safekit-ha-application-modules "Browse the library of pre-configured SafeKit modules for automated application failover") | [๐Ÿง‘ Contact us](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/contact-us-for-safekit/) [๐ŸŽ SafeKit free trial](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/safekit-free-trial/) [๐Ÿ… Free certification](https://training.my.evidian.com/mod/page/view.php?id=712) [๐Ÿ’ฐ Perpetual license cost](https://safekit.evidian.com/products/high-availability-software-for-application-clustering/get-a-quote-safekit-en/) * ยฉ Eviden, all rights reserved * |[Eviden privacy](https://eviden.com/privacy-policy) * |[Eviden terms and 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