Determine the maximum values for performance counters using ONTAP API 8.2

[mitchellcipriano]

We are using ONTAP API 8.2 and would like to know how to determine the maximum range for some of the performance counters.

e.g for volume performance object we have counters such as avg_latency, total_ops etc. How do we determine what the maximum value for these? We need to determine what can be their maximum size in order to determine the datatype to use while storing them within out systems.

Is there any document to get all of this information?

[madden]

Hi,

I don't believe this information is documented other than in the code itself.  When dealing with performance APIs I would store the 'cooked' values over some interval rather than the raw results you get from the API.  If you do that I think you can determine expected value sizes.

Cheers,
Chris Madden

Storage Architect, NetApp EMEA