Configure preferred sites in a stretched cluster to define a location in which you want to run all your resources. This ensures that VMs and volumes come up on the preferred site after a cold start or after network connectivity issues. A dynamic quorum ensures that preferred sites survive after events such as asymmetric network connectivity failures.
In the event of a quorum split, if witnesses cannot be contacted, the preferred site is selected and the passive site drops out of the cluster membership.
VMs in a stretched cluster are placed based on the following site priority:
- Storage Affinity Site
- Group Preferred Site
- Cluster Preferred Site
Host VMs and associated Virtual Disks
VM placement can be difficult in a Hyper-V clustered environment. Always ensure that VMs that have I/O-intensive workloads are hosted on the node that owns the VM's Virtual Disk.