![]() ![]() Unplanned failover: In the case of unplanned events such as unexpected power outage, a natural disaster or virus attack, unplanned failover automatically take over the services on this server to reduce the downtime caused by hardware or software failure and the impact on business continuity. Using planned failover in Hyper-V benefits to reducing downtime and increase availability. ![]() Planned failover: For example, VM data migration or maintenance, software upgrade, etc. Hyper-V clustering copes with planned and unplanned failovers effectively, which contributes to reducing shutdown time of servers and improve business continuity. Meanwhile, learning how to set up Hyper-V replica is much easier than deploying a complex cluster system. If you do not want to invest additional costs for extra hardware and shared storage, Hyper-V replica is still a good choice for you. However, not everyone should use Hyper-V clustering, you’d better choose a solution based on your needs. Besides, Hyper-V clustering does not lose data while transferring failover, but replica is possible to lose part of data. However, Hyper-V replica can only support to enable failover manually for VMs. Hyper-V cluster enables Hyper-V virtual machines to failover automatically in case of failures. So, they are supporters for each other instead of adversaries. Hyper-V clustering and replica are completely different solutions implemented to solve different problems.įailover clusters are used for business continuity and Hyper-V replications are used for disaster recovery. ![]() With Hyper-V failover cluster, the downtime perceived by end users will be very short, thus greatly increasing availability of Hyper-V. The role of Hyper-V clustering is to actively monitor the hosts within the cluster to see if they are working properly. Hyper-V cluster has a maximum of 64 nodes, and each cluster can have up to 8.000 virtual machines. ![]() When a physical server in the cluster fails, another server begins to take over the services of the failed server (this transferring process is called failover). Hyper-V clustering is a connected unit of independent computers, it is a feature of Windows Server designed to protect virtual machines in the event of a failure. ![]()
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