what is vmware vsphere

Communication between vCenter Server and ESX

  • vCenter Server interconnects with the ESX/ESXi host agent through the VMware vSphere API (vSphere API).
  • When a host is added first to the vCenter Server, vCenter Server sends a vCenter Server agent to run on the host.
  • The vCenter Server agent acts as a mini-vCenter Server to make the following functions:
    • Relays and enforces source allocation decisions complete in vCenter Server, including those that the DRS engine sends.
    • Passes virtual machine provisioning and configuration change commands to the host agent.
    • The host agent change the commands of host configuration.
    • The host agent performance figures, alarms, and error conditions and sends to the vCenter Server.
    • ESX/ESXi hosts allows management at different release versions.
d6c-vc-host-agent

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