If you just need block stats (not NFS/CIFS) I would suggest to use naviseccli  You could also look at VNX M&R and UniSphere central – both are available free of change and provide monitoring
Hi,  I'd like to monitor some things such as IO Throughput,Disk Queue, Space left, LUN Utilization etc using our Nagios instance. Which one is more fit to the task?  Thanks Gil
What is the difference between Unisphere CLI and Navisphere CLI?