This guide describes how to upgrade VMware vSphere 4.0 components, including ESX, ESXi, vCenter Server, and vSphere Client.
The VMware vSphere 4.0 Upgrade Guide explains how to migrate existing ESX/ESXi, vCenter Server and vSphere Client installations to the 4.0 release. It is intended for experienced system administrators who manage Windows or Linux virtual machines in data‑center environments.
The guide covers changes to the upgrade process, detailed procedures for host, datastore and virtual‑machine upgrades, licensing considerations, required hardware and software specifications, and post‑upgrade tasks such as backup, rollback and tools updates. This manual is written in Chinese.
| Supported ESXi version | 4.0 |
|---|---|
| Supported vCenter Server version | 4.0 |
| Supported vSphere Client version | 4.0 |
| Minimum host hardware requirements | See ESX/ESXi hardware requirements section |
Yes, the utility upgrades ESX 3.x/ESXi 3.5 hosts to ESX 4.0/ESXi 4.0.
Upgrade the database schema before starting the vCenter Server upgrade.
No, licensing is centrally managed by vCenter Server after the upgrade.
First upgrade VMware Tools, then upgrade the virtual hardware.