See also more Hyper-V pages

http://social.technet.microsoft.com/Forums/en-US/winserverhyperv/thread/6fb8cc70-bc52-4b3e-9aca-94288225a6ba

http://technet.microsoft.com/en-US/library/dd722835%28v=BTS.10%29.aspx

http://support.microsoft.com/kb/555975/en-us

http://social.technet.microsoft.com/wiki/contents/articles/151.hyper-v-virtual-networking-survival-guide.aspx

http://www.hyper-v.nu/archives/marcve/2013/01/lbfo-hyper-v-switch-qos-and-actual-performance-part-1/

• In machine BIOS, disable C1E and C-States
• In machine BIOS, set all Power Management settings to “Maximum Performance”
• On NICs and switches, enable jumbo frames for connections to the storage, but leave regular MTU on connections to clustering network and LAN, DMZ, ecc (more on this below)
• On switches, disable all iSCSI optimizations
• On switches, disable Spanning Tree Protocol for all connections to storage
• Disable TCP Offloading and Receive Side scaling at the operating system level

C:\>netsh int tcp set global rss=disabled
C:\>netsh int tcp set global chimney=disabled

• Verify which NICs among the ones you have available give the best performance to the storage
• Disable NetBIOS and Microsoft protocols on connections to the storage
• Use as many NICs as possible to connect to the storage
• Install and configure iSCSI and MPIO using Dell MD Storage Software
• Verify that MPIO is set at Round Robin with Subset
  • MPIO tab on the disk properties in Server Management, Disk Management
• Designate a preferred Network for Cluster Shared Volumes Communication:

 PS C:\> ( Get-ClusterNetwork "Storage Network 130" ).Metric = 500
 PS C:\> ( Get-ClusterNetwork "Storage Network 131" ).Metric = 501
 PS C:\> ( Get-ClusterNetwork "Storage Network 132" ).Metric = 502
 PS C:\> ( Get-ClusterNetwork "Storage Network 133" ).Metric = 503

• Resulting settings:

 PS C:\> Get-ClusterNetwork | ft Name, Metric, AutoMetric, Role
 Name                              Metric            AutoMetric                  Role
 ----                              ------            ----------                  ----
 Clustering Network                  1000                  True                     1
 Management Network                 10000                  True                     3
 Storage Network 130                  500                 False                     0
 Storage Network 131                  501                 False                     0
 Storage Network 132                  502                 False                     0
 Storage Network 133                  503                 False                     0

• Install http://support.microsoft.com/kb/2517329/en-us
• Set the TCPAckFrequency to 1 on interfaces to the iSCSI storage as explained in http://support.microsoft.com/kb/2020559/ and http://sustainablesharepoint.wordpress.com/2010/03/10/best-practice-for-hyper-v-with-iscsi/

http://www.hosting.com/support/info/using-iperf-to-test-network-bandwidth