One thing I've found this SAN lacking in is documentation. It's easy to find, but bits of information are scattered across several documents. The HP implementation consultant handed me a thumb drive with 3GBs of data before he left, half of which are PDFs (to give you an idea).
The point of this post is to bring all of these bits together in one place to include settings and best practices for VMware ESXi 5.0 along with the relevant references. Here's what I've found so far - I will continue to add and update settings as I find them where relevant:
ESXi Advanced Settings:DiskMaxIOSize = 128 (Source)
QFullSampleSize = 32 (Source)
QFullThreshold = 4
Default Path Selection Policy (PSP) = VM_PSP_RR (Source and Powershell Tip)
IOPS = 1