StartVMwareCollectors can someone explain it?

[Radboud]

From the manuel:

• StartVMwareCollectors - the number of pre-forked vmware collector instances.
  This value depends on the number of VMware services you are going to monitor. For the most cases this should be:
  servicenum < StartVMwareCollectors < (servicenum * 2)
  where servicenum is the number of VMware services. E. g. if you have 1 VMware service to monitor set StartVMwareCollectors to 2, if you have 3 VMware services, set it to 5. Note that in most cases this value should not be less than 2 and should not be 2 times greater than the number of VMware services that you monitor. Also keep in mind that this value also depends on your VMware environment size and VMwareFrequency and VMwarePerfFrequency configuration parameters (see below).

What do they mean with VM service tot monitor (a vcenter server?) of all VM's and ESX servers?
I would like to know this so i can optimize the number of collectors.

Do i have 3 (1 vcenter servers) or 150 ( 1 vcenter all 15 ESX servers and ALL 60 VM's?)

[whit3h0rse]

Set to 3, Zabbix will connect to the vCenter and from there it will collect all the information about hypervisors, VM's, datastores, etc.
Check out this link to learn how VMware monitoring works on Zabbix: https://bestmonitoringtools.com/vmwa...er-vm-vsphere/