Storage vMotion Performance

Any tips on increasing storage vmotion performance in 5.5.

I have already created multiple vmkernals (2) for vmotions similar to below

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2007467

Was thinking of adding another two 1G uplinks so I'd have 4 in total. I know this will help with regular vmotions but not sure about storage vmotions.

Any advice would be great.