Been using Balance to monitor for over a year and just recently started getting this error a few of our nodes. This does not happen on each node, only a few. Some work just fine. We have rebooted the balance appliance, deleted and rediscovered the filers with the same result. These filers did work at one time, but have since stopped. We are only having issues trying to collect stats. The discovery of the filers is fine. We are running 220.127.116.11.9
There is a known issue with the changes in how ONTAP 8.1.3x handles performance queries. The relevant BURT is #738776 and the remedy is to upgrade OCB to the current release 18.104.22.168. Unfortunately, I do not have enough familiarity with OCB to quantify why the one partner is still reporting performance data. I do know that the change to ONTAP made it load sensitive- if the response to OCB requires too much resources (memory) ONTAP will send a different response. OCB 22.214.171.124 is not prepared for this behavior whereas the code in 126.96.36.199 is modified to accommodate.
To obtain the latest Balance version, 188.8.131.52, please log into the Support website and navigate to the software downloads