![]() You must install or update the VMware Tools on the guest OS to have a driver for the VMXNET network adapters available. Use a VMXNET (original, 2 or 3) network adapter instead of an emulated one (Vlance, e1000x).This means that PRTG can only use 1 CPU with 1 core in this configuration and cannot work properly. Scheduling threads over different sockets in such a configuration has a high impact on the operating system so that Windows may not do it at all. CPU cores on individual sockets may result in serious performance issues. Configure your VM to have the CPU cores on the same CPU socket.To reduce related bottlenecks, use VMware 5. Other VMs might interfere with this traffic. Consider that PRTG creates a lot of input/output (I/O) on your system. ![]() Use VMware 5 to reduce resource issues.Running the Network Time Protocol (NTP) client on the ESX host and the domain controller can keep clocks synchronized over a network. In addition, HTTP sensors can fail (especially when monitoring websites via HTTPS) if the time difference between the system running the probe and the target system is too big. If clocks are unsynchronized, PRTG probes might be unable to connect, and HTTP requests to the PRTG webserver can fail as well, mainly when using HTTPS. Check that the host syncs time correctly as well. Ensure that the system time of VMware is synchronized with the time of the host system or an NTP server, but not both. Make sure that clocks are synchronized: On your VM’s guest operating system, VMware Tools should be installed.Use long sensor scanning intervals of 15 minutes or more.Measure the advantages against the disadvantages in your setup. However, network storages can be configured in failover mode: If an ESX server fails, the storage will be moved immediately to another one, so it has little impact on PRTG. Use really fast storage: Physical storage directly on the PRTG core server is much faster than storage over the network. ![]()
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