ESXi host

A computer on which a hypervisor is running one or more virtual machines. Each virtual machine is called a guest machine.

ESET Security Management Center (ESMC) (formerly ESET Remote Administrator (ERA))

ESET Remote Administrator (ERA) is an application that allows you to manage ESET products in a networked environment from one central location. For more information see the ESET Remote Administrator Online help.

Guest Introspection

Guest Introspection is a service from NSX Manager to offload security functions to ESET security solution.


A hypervisor or virtual machine monitor is a piece of computer software or hardware that creates and runs virtual machines (for example, VMware vSphere).

NSX Manager

The NSX Manager is the centralized management component of NSX and runs as a virtual appliance on an ESXi host.

Virtual Agent host (VAH)

Virtual Agent Host (VAH) is a component of ESET Remote Administrator that virtualizes agent entities to allow management of agentless virtual machines. For more information click here.

Virtual machine

A virtual machine (VM) is a software implementation of a machine (computer) that executes programs like a physical machine.

Virtual Appliance

A virtual appliance is a pre-configured virtual machine image, ready to run on a hypervisor. Virtual appliances are provided as files, via downloads or physical distribution. The most commonly used format is the Open Virtualization Format (OVF).

An OVA is a single file distribution of the same file package, stored in the TAR format.

VMware Tools

VMware Tools is an optional set of drivers and utilities that you install in the operating system of a virtual machine. This suite enhances both the performance of a virtual machine's guest operating system and interaction between the guest and the host.

vMotion Migration

vMotion migration enables live migration of a virtual machines from one physical server (ESXi server) to another while maintaining continuous service availability. Additionally, vMotion allows you to perform maintenance on a host machine without the need for downtime on your virtual machine.

A virtual machine must meet the following requirements before migration:

A virtual machine must not have a connection to a virtual device (CD-ROM or floppy drive) with a local image mounted. You can place your ISO images into a shared data store.

A virtual machine must not have a connection to an internal vSwitch.

A virtual machine must not have CPU affinity configured.

Shared storage where the VM can store their files.

A Gigabit Ethernet or faster connection for vMotion.

Access to the same physical networks (hosts must be plugged into the same physical network).

Hosts must have compatible CPUs. If you do not perform live migration between hosts with identical CPUs, you could experience a vMotion crash.

A VMkernel port on each host (with a different IP address for each  host).