This document describes the maximum configuration limits for vSphere 4.1, including maximum configurations for virtual machines, ESX hosts, vCenter Server, and vCenter Server Extensions
The document provides the highest tested and supported configuration limits for VMware vSphere 4.1. It covers limits for virtual machines, ESX/ESXi hosts, memory, storage, networking, resource pools, clusters, and vCenter Server components.
Each section contains tables that specify the maximum number of CPUs, memory size, disk capacity, network adapters, and other resources that can be used without exceeding VMware support. The guide helps planners and administrators design environments that stay within supported parameters.
| Maximum virtual CPUs per VM | 8 |
|---|---|
| Maximum RAM per VM | 255 GB |
| Maximum logical CPUs per ESX host | 128 |
| Maximum RAM per ESX host | 1 TB |
| Maximum hosts per vCenter Server instance | 1000 |
A virtual machine can have up to 8 virtual CPUs.
A virtual machine can be configured with up to 255 GB of RAM.
A vCenter Server can manage up to 1,000 hosts.
An ESX host can support up to 1 TB of RAM.