Chad Sakac works for EMC, and has blog of course.
He wrote a wonderful post last week about getting the most you can out of IP storage for ESX. The post itself was great because it was a joint project from 6 different people from 5 different companies all working together to share great info for the virtualization community. The post can be found here.
Another great post he made today - So… What's the “BIG picture stuff " going on under the covers?
I highly recommend it!