Specifications

Administration Guide
62 VMware, Inc.
Downgrading to One Virtual Processor
VMware!ESX!Server!does!not!support!downgrading!a!multiprocessor!virtual!machine!
to!a!uniprocessor!virtual!machine.
Migrating Older ESX Server Virtual Machines
You!can!use!virtual!machines!created!with!versions!of!ESX!Server!older!than!2.5.!Virtual!
machines!created!in!ESX!Serv er!1.5!can!work!as!is.! To!take!advantage!of!the!new!
features!of!the!current!release,!upgrade!your!virtual!machines.
If!you!created!the!virtual!machine!under!ESX!Server!1.5!and!
do!not!want!to!upgrade!the!
virtual!machine,!run!it!in!legacy!mode.!See!“Running!ESX!Server!1.5!Virtual!Machines!
in!Legacy!Mode”!on!page 63.
Upgrade!the!virtual!machine’s!hardware!for!any!virtual!machine!created!under!ESX!
Server!1.0,!1.1!or!1.5.!Make!sure!the!virtual!machine!is!powered!off.!On!
the!Status!
Monitor!in!the!management!interface,!click!the!arrow!next!to!the!terminal!icon!(!!)!and!
choose!Configure!Hardware.!On!the!Hardware!tab,!click!Upgrade!Virtual!Hardware,!
and!click!OK!to!upgrade!the!hardware.
Assign!disk!bandwidth!shares!to!the!virtual!machine.!See!“Managing!Disk!Bandwidth!
from!the!
Management!Interface”!on!page 372.
Upgrading Windows Server 2003 Guest Operating Systems Created by
ESX Server 1.5.2
If!you!used!ESX!Server!1.5.2!to!create!a!virtual!machine!with!a!Windows!Server!2003!
guest!operating!system,!update!the!guestOS!configuration!parameter!in!the!virtual!
machineʹs!configuration!file.!Otherwise,!this!virtual!machine!will!not!run!properly!with!
ESX!Server!2.5.
To update the guestOS configuration parameter
1Log!into!the!VMware!Management!Interface!as
!the!owner!of!the!virtual!machine!
or!as!the!root!user.!
2Click!the!arrow!to!the!right!of!the!terminal!icon!for!the!Windows!Server!2003!
virtual!machine!and!choose!Configure!Options.!
N
OTE You!must!upgrade!virtual!machines!created!under!ESX!Server!1.0!or!ESX!Server!1.1!to!
ESX!Server!1.5!before!they!can!be!migrated!to!ESX!Server!2.5.!After!these!virtual!
machines!run!under!ESX!Server!1.5,!migrate!them!to!ESX!Server!2.5.!See!the!upgrade!
instructions!in!the!ESX!Server!Installation
!Guide!at!
http://www.vmware.com/support/pubs/esx_pubs.html.