Virtual machines slow performance SoFS SMB 2012 R2 Hyper-V
Posted on 2014-09-27
I have a 3 cluster setup going with 3 physical nodes.
Cluster 1 - SoFS (Data)
Cluster 2 - VM Hosts Cluster (VS1, VS2)
Cluster 3 - Virtual SQL Cluster (SQL1, SQL2)
VS1/VS2 can send/receive files maxing out the 1Gbe connection at 110MB/sec perfectly.
However when communicating from Data to (virtual) SQL1, it starts out at 110MB/sec then drops to roughly ~20-40MB/sec after a second when transferring large files such as a SQL 2014 install ISO. During this transfer task manager shows 300Mbps~ usage.
What is causing this slow performance and how can I improve it?
Using Intel Gigabit ET2 Quad port nics.
4 gigabit connections teamed via 2012 R2 teaming method for each virtual machine.
The data server has 8 gigabit connections teamed as well. All connect to the same physical switch.