Reports showed Data not available

Hello,

I'm working on reports side and I discovered that TOP n reports are not working.
In troubleshooting part it is mentionned that SNMP need to be activated.
quote
To view the CPU utilization, Memory Utilization, Disk Utilization, Interface Traffic, Interface Utilization and Interface Errors reports, you need to have SNMP installed in the managed devices. Reports list only the SNMP-enabled devices.
end quote.

I'm using to collect these information only WMI, it means that all reports are not working if it is not using SNMP or if SNMP is not set on the server ?

I need to provide several reports for my management and I got lot of preasure.
Could you help me to get reports on data collected with WMI to get reports working.

Many thanks for your help.
Regards
Philippe