VMware and Teradata Terminology

Teradata® Database on VMware Base, Advanced, Enterprise Tiers Getting Started Guide

prodname
Teradata Database on VMware
vrm_release
Deployer 3.02
category
Configuration
Installation
featnum
B035-5958-018K
You should be familiar with the following terms regarding VMware and virtualization.
VMware or Virtualization Term Description
VMware vSphere VMware vSphere is a suite of products that provides network virtualization services to hosts and VMs. vSphere links VMs to each other within a single host, connects VMs to the physical network, joins VMkernel services to the physical network, and provides networking for the management interface which runs management services for vSphere hosts.
VMware vCenter vCenter is a server that is installed on either Linux or Windows and provides central management of VMs and ESXi hosts.
VMware ESXi ESXi is also a component of vSphere. It is a hypervisor that defines processor, memory, storage, and networking resources into multiple VMs that run applications.

ESXi is installed directly on the server hardware, inserting a virtualization layer between the hardware and the operating system. ESXi partitions a physical server (pNode) into multiple secure VMs (vNodes) that run on the same physical server. Each VM represents a complete system, with processors, memory, networking, storage, and BIOS so that the operating system and applications can be installed and run in the VM without modification. VMs are also completely isolated from each other by the virtualization layer to prevent a crash or configuration error in one VM from affecting the others.

vCPU A virtual CPU corresponds to one hyperthreaded core. Teradata Database on VMware requires hyperthreading be enabled.
vSphere Virtual Switch The vSphere virtual switch lets you set up VM access switching from a centralized interface so you can provision, administer, and monitor virtual networking across multiple hosts and clusters.
You should understand the following Teradata terminology.
Teradata Terminology Description
Teradata Node A Teradata node requires three pieces of software: a Trusted Parallel Application (TPA), Parallel Database Extensions (PDE), and an operating system. The Teradata Database is classified as a TPA. Teradata nodes can be either physical or virtual.
Physical Node (pNode) A pNode is a physical machine running in a data center. Ensure all pNodes are connected identically to allow vNode TPA instances to be deployed to any ESXi host. One pNode corresponds to a single ESXi host or to the actual hardware, such as to one Dell 720, 730, and so on. During deployment, CPUs and memory are checked to ensure they are the same on all pNodes containing vNode TPA instances.
Virtual Node (vNode) A vNode is a virtual node running on a pNode in a data center. pNodes can have multiple vNodes, as defined through the ESXi hypervisor. A single vNode corresponds to a single VM that runs Teradata software.