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Darvin1705's avatar
Darvin1705
Copper Contributor
Apr 11, 2023
Solved

Cluster Failover Hyper-v

Hello Friends   I've been testing Cluster Failover for a couple of days. I have some problem with virtual machines, or so it works fine and I'm just bothering you guys. Namely. I have two nodes...
clustering
Hyper-V
Windows Server
  • Cybernetttic's avatar
    Cybernetttic
    Apr 11, 2023

    Darvin1705 The Get-Cluster | fl will tell you about a parameter called "ResiliencyDefaultPeriod" which is set to 240s (4mins). During node outage, the cluster must wait for 4mins for the failing node to become responsive again before taking action. It is this time that the VMs remain in unmonitored state in the cluster. You must not change this parameter because in a real scenario, 4 minutes is what it typically takes for devices like network switches to reboot and return to senses before the cluster realizes something is very wrong and starts to failover the VMs to the surviving and responsive nodes.

elieelkarkafi's avatar
elieelkarkafi
MVP
Apr 11, 2023

Darvin1705 

There are several steps you can take to speed up the cluster failover process:

  1. Optimize the Network: Ensure that the network between the cluster nodes is optimized for performance. This can include using high-speed network adapters, optimizing network settings, and ensuring that there are no bottlenecks in the network.

  2. Allocate Sufficient Resources: Ensure that the cluster nodes have sufficient resources, including CPU, memory, and storage, to handle the failover process. If resources are limited, the failover process may take longer.

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