Installation guide

List of Preserved Configuration Components
When you upgrade to ESX 4.0/ESXi 4.0, the host upgrade process preserves many components of the ESX
3.x/ESXi 3.5 configuration.
ESXi
For ESXi, the upgrade to ESXi 4.0 preserves almost all configuration data, including your networking, security,
and storage configuration. The only configuration not preserved is related to licensing, because a new ESXi 4.0
license is required after the upgrade.
ESX
For ESX, the upgrade reuses the existing /boot partition to hold the ESX 4.0 boot files.
After the upgrade, the ESX 3.x installation is mounted in the new ESX 4.0 installation under the /esx3-
installation directory.
The upgrade to ESX 4.0 preserves almost all configuration data, including your networking, security, and
storage configuration. Specifically, the upgrade to ESX 4.0 preserves the following files from the ESX 3.x file
system.
n
/etc/logrotate.conf
n
/etc/localtime
n
/etc/ntp.conf
n
/etc/syslog.conf
n
/etc/sysconfig/ntpd
n
/etc/sysconfig/xinetd
n
/etc/sysconfig/console
n
/etc/sysconfig/i18n
n
/etc/sysconfig/clock
n
/etc/sysconfig/crond
n
/etc/sysconfig/syslog
n
/etc/sysconfig/keyboard
n
/etc/sysconfig/mouse
n
/etc/ssh
n
/etc/nsswitch.conf
n
/etc/yp.conf
n
/etc/krb.conf
n
/etc/krb.realms
n
/etc/krb5.conf
n
/etc/login.defs
n
/etc/pam.d
n
/etc/hosts.allow
vSphere Upgrade Guide
68 VMware, Inc.