VMware ESX Server 2.5.5 Release Notes
What's in the Release Notes
The release notes cover the following topics:
This release of VMware ESX Server offers the following improvements:
Compatibility with VMware VirtualCenter
ESX Server 2.5.5 is compatible with VMware VirtualCenter releases 1.3.x, 1.4.x, and 2.0.x.
Previous Release Notes for ESX Server 2.5.x
Release Notes for ESX Server 2.5, 2.5.1, 2.5.2, 2.5.3, and 2.5.4 are available at http://www.vmware.com/download/esx/.
Before You Begin
Refer to the following before you install or upgrade ESX Server:
For general instructions on configuring ESX Server for boot-from-SAN operation, see the ESX Server SAN Configuration Guide.
For hardware compatibility with ESX Server, see the Compatibility Guides available at www.vmware.com/support/resources/esx_resources.html.
Note: If you are using a preboot execution environment (PXE), a boot-from-SAN operation will fail and is not supported for this version of ESX Server. Only a local disk PXE installation is supported.
If you purchased the VMware Virtual SMP product, you can create Symmetric Multiprocessing (SMP) virtual machines, with single or dual virtual CPUs. You install the Virtual SMP product during your ESX Server installation by inserting its serial number during the licensing step of your ESX Server installation.
If your VMware ESX Server host is running a release with an older patch level than shown in the upgrade list, you must first upgrade it to the given patch level before upgrading it to ESX Server 2.5.5. Direct upgrades from older patch levels than the listed releases have not been tested and are not supported.
ESX Server 2.5.5 supports upgrading from the following previous releases:
During an upgrade from a previous ESX Server release to ESX Server 2.5.5, this upgrade installer reinstalls all default ESX Server RPMs. If you modified any of the default ESX Server RPMs, these modifications are overwritten during the upgrade.
To upgrade from previous versions of ESX Server to ESX Server 2.5.5, you can use either the installation CD-ROM or the tar archive.
Upgrading from a CD-ROM
This is the CD you received from VMware or the CD you created from the ISO image file you downloaded from the VMware site. See "Upgrading from a Previous Release of ESX Server" in the ESX Server Installation Guide, available from www.vmware.com/support/pubs/esx_pubs. html.
Using the tar archive, upgrading directly from releases prior to ESX Server 2.0.1 upgrade patch 6 is not supported. To upgrade from ESX Server 1.5 or ESX Server 2.0.0 to ESX Server 2.5.5, upgrade first to ESX Server 2.0.1 with Upgrade Patch 6.
If you are using the downloaded tar archive, note the filename of the download file and make appropriate substitutions in the file and directory names shown below.
Note: To avoid a server reboot prompt, run /upgrade.pl -noreboot. For further details, refer to KB 1002381.
This update will not be complete until you reboot the ESX Server. If you enter n, to indicate that you will not reboot at this time, ESX Server displays the warning message "Please reboot the server manually. Your virtual machines will not run properly until this is done." If you see this message, you must manually reboot the server to complete the driver update.
After the installation, a file named "perllocal.pod" is created in the / directory. This is an unnecessary file created as a byproduct of the installation process. You can safely delete it.
Guest Operating System
OperationNote: Because of ongoing certification, check the SAN Compatibility Guide for ESX Server 2.x to see if your array is listed before upgrading.
Refer to KB 1107 for VMware product security alerts.
For a list of resolved issues in ESX Server 2.5.5, see the ESX Server 2.x Fixed Bugs list available at: http://www.vmware.com/pdf/esx2x_fixed_bugs_list.pdf.