Hello,
We are running a site with 3 ArcGIS Servers (10.7.1) sharing the load for our map services on VMs running Windows Server 2016. We do not use Portal. Each evening we reboot one of the three servers to maintain good performance. However, on a few occassions the ArcGIS Server service did not restart. The 'startup' mode is correctly set to 'Automatic(Delayed)'. The server was marked as "unhealthy" by the web adaptors and all traffic was re-routed to the remaining servers. This lead to overloaded servers and additional problems.
Every service running under Windows Server has 'Recovery' options that can be configured to attempt to restart a service that fails to start. Have you experimented with the 'Recovery' options for the ArcGIS Server service? Has it helped? What settings did you use?
Thanks,
Bernie.
