Basic History on redundant servers
Basic history services are working on two connectivity servers. Target state on both of them is "Service", no one goes to "standby". Once a 24 hours logs are stopping to work, Status field in Trend display becomes yellow. How to fix it?
Answers
Do you have any third party backup (eg Acronis) performing hot backup? Disable it and see if it helps (ABB has *NOT* certified any hot disk image backup tool).
Do you have large amount of logs + large amount of secondary aggregated logs? Try disabling the secondaries - there has been situations when aggregation has run out of memory, etc. when log template has many levels of secondaries.
Does Windows Performance Monitor (not Task Manager) show any increase in AdvHtHistorySrv.exe -> Virtual Bytes or Physical Disk -> Average Disk Queue Length over this 24 hour period?
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