Problem with check_dell_md3200

Hi
I execute this check [ ./check_dell_md3200 –c1 MyIP1 –c2 MyIP2 –mode ‘virtualdisks’ -a ‘Current KB’ -r ’emptyset’ –perf –md3000 ] but the result is different about your result. My result is: Optimal – 0. What does mean that zero?

Regards