I am using scvmm 2012 r2 with hyper-v hosts running 2012 r2. We have 3 clusters managed by scvmm.
On one cluster I have very long delay during Live Migration using SCVMM - strange thing is, just happening on 1 of the 3 clusters. I have no delay at all when using Failover Cluster Manager. So it is something within SCVMM.
The configuration of the cluster is the same. There is just one difference - on the cluster with the long delay I have around 500 VLANs configured which are associated with VMs running there. The VMs are very small with very small ressource requirements - just 2 GB RAM with 100 GB disks.
Using SCVMM for live migration the star rated host recommendation is created quickly. After starting the migration - checking the job in SCVMM - I have between 5min. to 2 hours delay per VM. It always stalls during "Run-Prechecks for transfer".
Please, does someone know what is happening during "Run-Prechecks for transfer"? Does someone know what I could do to troubleshoot? No messages in event log with warning or similar. The only difference I see between the clusters is the number of VLANs.