Installation guide

How vSphere 5.0 Differs from vSphere
4.x 2
vSphere 5.0 is a major upgrade from vSphere 4.x.
The following changes from vSphere 4.x affect vSphere installation and setup. For a complete list of new
features in vSphere 5.0, see the release notes.
Service Console is
removed
ESXi does not include a Service Console. You can perform most tasks that you
performed in the Service Console by using esxcli commands in the ESXi Shell,
by using vCLI commands, and by using VMware PowerCLI commands. See
Command-Line Management in vSphere 5.0 for Service Console Users and Getting
Started with vSphere Command-Line Interfaces.
ESXi does not have a
graphical installer
The graphical installer relied on the Service Console, which is not a part of
ESXi. ESXi retains the text-based installer.
vSphere Auto Deploy
and vSphere ESXi Image
Builder CLI
Before ESXi 5.0, ESXi was installed on the physical disk of each ESXi host. With
ESXi 5.0, you can load an ESXi image directly into memory by using vSphere
Auto Deploy. You can provision and reprovision large numbers of ESXi hosts
efficiently with vCenter Server, and manage ESXi updates and patching by
using an image profile. You can save host configuration such as network or
storage setup as a host profile and apply it to the host by using Auto Deploy.
You can use ESXi Image Builder CLI to create ESXi installation images with a
customized set of updates, patches, and drivers.
For complete information on using vSphere Auto Deploy and ESXi Image
Builder PowerCLI, see the vSphere Installation and Setup documentation.
Changes in the ESXi
installation and upgrade
process
ESXi 5.0 uses a single installer wizard for fresh installations and upgrades.
ESXi 5.0 also provides a new option for deploying ESXi directly into the host
memory with vSphere Auto Deploy. The vihostupdate and esxupdate utilities
are not supported for ESXi 5.0. You cannot upgrade or migrate to ESXi 5.0 by
using any command-line utility. After you have upgraded or migrated to
ESXi 5.0, you can upgrade or patch ESXi 5.0 hosts using vCLI esxcli
commands.
IMPORTANT After you upgrade or migrate your host to ESXi 5.0, you cannot
roll back to your version 4.x ESX or ESXi software. Back up your host before
you perform an upgrade or migration, so that, if the upgrade or migration fails,
you can restore your 4.x host.
See “ESXi 5.0 Upgrade Options,” on page 80.
VMware, Inc. 11