Posting here since Don (and others)  have VMWare knowledge :)

A couple days ago I was preparing to update firmware on my arrays.  I have datastores setup on multiple arrays and I sVmotion'd a few VMs to different arrays, so the outage would be less noticable.  In the past I could verify VAAI was working correctly when doing sVmotion b/c network traffic would only spike between array members, but in this case I saw traffic spike between Array --- Host --- Array, in that pattern.  Thought this was odd and really not sure how to go about troubleshooting.

The arrays I was migrating between were all in the same pool, but have different raid levels: (2 x 6210E @ Raid 10, 2 x 6210E @ Raid 6).  The datastores have a honored raid preference assigned. 

Thanks