mc,
I am not sure what "antics" you are referring to, but I do see that it took 9 days from time of original post to time of half-assed useless reply. The array is a top-line array for it's class. Yes, datacenters have arrays that cost seven figures, but for a single 3-4U rack array, these are up there. With its current configuration it should be able to push quite a bit more than the 60-95MB/s that I would be content with. In any case, diving down to 8MB/s without any other load is highly abnormal. If that does not compute, there are some whitepapers that can help.
Eleven,
Thanks for your post. As far as I can tell (and maybe I just don't know where to look) there is no QoS going on. Even then, I would expect that QoS would be smart enough to utilize unused bandwidth/capacity when there is nothing else using it. I will put ESXtop on the system and see if it can point us in the right direction. As far as other things on the SAN, there are few low utilization servers on there (print server) but we have monitored them to ensure that they are not chewing up I/O. Also when opportunity allowed, we shut down literally everything else on SAN and tried to move files with the same exact results!
