Hey mcowger, I have a VNX 5300 performance question. We just hooked up a new Cisco UCS system (over 10gb FCoE). I ran the benchmark from the SAN performance thread (link to my post here: http://communities.vmware.com/message/2183191#2183191).
In summary, the read IO/s were over 28K, but the random read/write IO/s were about 1K. Latency was about 2ms for reads, 40ms for random.
We don't have SSD or fast cache yet, and there is no other VM running on that LUN.
Do those numbers look right to you? It seems to me the reads are too high and the writes are too low.