Hi VMWARE Experts. This is my first post in the community forum and would like to seek enlightenment. I have been reading a lot as part of my Vsphere 5.0 deployment in a few months. I am having mixed readings regarding the ISCSI VMkernel design. I am planning to put the ISCSI VMKernel ports in one vswitch and my question is do I put the ISCSI ip addresses on the same subnet or on a different subnet? I have seen both setup configured, are there any pros and cons for both?
Thanks a lot!
Welcome to the Community - The iSCSI network shoud be on its own subnet different from the subnets used for management, vmotioin, the VMs etc -
hi weinstein5, thx for the respnse. Yes, the management, vmotion, vm traffic are on their own subnet, I am referring solely to the ISCSI network, say I have 4 NICS to be used for ISCSI and i will put them all in one vswitch. Do i configure each ISCSI VMkernel IPs on separate subnets? Or is it perfectly fine to have them in the same subnet?
Welcome to the Community,
whether to use a single or multiple subnets for iSCSI depends on your storage system. I setup a VNX5300 lately and with this system you will use a separate subnet for each controller port (i.e. one subnet for port0 on both controllers and another subnet for port1 on both controllers).
Since you mentioned Dell, are you using Equallogics? If so, they have a multipath plugin and script (post references 4.x, but the setup for 5.0 is the same) that will setup your iSCSI networking pretty automatically.