i have ested retention to loged data in netxms to one year. Now i need to make graphs of some monitored information for last three months (each month separatly).

How i can do it?
By showing historical data in graph i can see only one month. When i try more o older month i end with "Cannot get value for DCI HKK HyperV1: "srv-aplikacno-ostry: HV VP 1" (Request timed out).

Any idea?

Thanks
Jakub