Thank you, Joe.

I will disable TCP Checksum Offload and Large Send Offload and keep the current configuration for UDP Checksum and IPv4 Checksum Offload enabled.  

Can you please tell me how to test the iSCSI connection to the array from the host?  

The document doesn't go into network adapter configurations; only installing BACS and assigning an IP address.  I do not have BACS installed on the VM.

For most implementation, “TCP Checksum Offload” and “Large Send Offload” will decrease performance and should be disabled.  Before enabling jumbo, test the iSCSI connection to the array from the host first. Once you have a connection, you can then configure jumbo.

This link has some additional information:

en.community.dell.com/.../3615.rapid-equallogic-configuration-portal-by-sis.aspx

Scroll down until you see the Microsoft/Hyper-V configuration doc

-joe

Thank you, Joe.

The NICs are Intel 82576 Dual Ports.  

I have two virtual networks that still has Offloading enabled on the host Hyper-V server.  Will I need to change the host server NIC settings before changing the VM NIC settings?  

As for the specific settings, I think I'm good.  I'll change TCP/UDP and LSO disabled and enable Jumbo frames.

Yes, that should have been TCP/UDP Offload disabled.

Testing the connection is simply just configuring the iSCSI initiator for the Group IP discovery, and ensuring you can connect to the target volume (verify in the GUI by selecting the Volume> and viewing the connections tab.

We don’t have specific documentation for each vendor’s NIC settings, generally the items needing adjustment is the TCP/UDP Offload and Large Send offload.

Post the NIC make and model, and what specific setting are you concerned about.

-joe

Yes, the physical and vm nics should be setup with TCP/UDP LSO disable.

-joe

Thank you, Joe.  

I guess I won't be able to change the NIC properties then as the Hyper-V host contains a lot of important VMs...