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VMware Released a second update for vSphere 4

By Vladan SEGET | Last Updated: April 26, 2025

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ESX 4 U2, ESXi U2 and vCenter U2 Released.

Together with VMware Data Recovery 1.2 released yesterday, there has been an update for vSphere 4 too. It's a vSphere 4 U2. About 6 month earlier the U1 was released and there has been some questions, (all the beta users and of course VMware Employees knew) about if the name of the release gonna be vSphere 4.1 or Update 2. So it's finally U2 which is here.

You can download the updates here. There are separate iso files for ESX 4 U2, ESXi 4 Installable U2, vCenter Server 4 U2, and also VDR 1.2 and others..

There are new functionalities and a bug fixes:

New features vCenter Server U2:

Guest Operating System Customization Improvements: vCenter Server now supports customization of the following guest operating systems:

  • Windows XP Professional SP2 (x64) serviced by Windows Server 2003 SP2
  • SLES 11 (x32 and x64), SLES 10 SP3 (x32 and x64)
  • RHEL 4.8, 5.4 and 5.5  Server Platform (x32 and x64)
  • Debian 5.0 with Debian 5.0 R1 and R2 (x32 and x64)

Resolved issues:

  • Storage vMotion fails even if the destination datastore has sufficient disk space.
  • VirtualCenter stops responding while retrieving historical events.
  • Selecting the Power Management option of a virtual machine that has five or more network adapters results in an error.
  • vCenter Server 4.0 cannot manage a ESX 3.x host if the VirtualCenter 2.5.x license server FQDN has a non-standard suffix.
  • Virtual machine starts on the host it was registered on, even if it is scheduled to start on another host.

See all resolved issues here…

ESX 4 and ESXi 4 new features:

  • Additional Guest Operating System Support— ESX/ESXi 4.0 Update 2 adds support for Ubuntu 10.04. For a complete list of supported guest operating systems with this release, see the VMware Compatibility Guide.
  • Enablement of Fault Tolerance Functionality for Intel Xeon 56xx Series processors— vSphere 4.0 Update 1 supports the Intel Xeon 56xx Series processors without Fault Tolerance. vSphere 4.0 Update 2 enables Fault Tolerance functionality for the Intel Xeon 56xx Series processors.
  • Enablement of Fault Tolerance Functionality for Intel i3/i5 Clarkdale Series and Intel Xeon 34xx Clarkdale Series processors— vSphere 4.0 Update 1 supports the Intel i3/i5 Clarkdale Series and Intel Xeon 34xx Clarkdale Series processors without Fault Tolerance. vSphere 4.0 Update 2 enables Fault Tolerance functionality for the Intel i3/i5 Clarkdale Series and Intel Xeon 34xx Clarkdale Series processors.
  • Enablement of IOMMU Functionality for AMD Opteron 61xx and 41xx Series processors— vSphere 4.0 Update 1 supports the AMD Opteron 61xx and 41xx Series processors without input/output memory management unit (IOMMU). vSphere 4.0 Update 2 enables IOMMU functionality for the AMD Opteron 61xx and 41xx Series processors.
  • Enhancement of the esxtop/resxtop utility— vSphere 4.0 Update 2 includes an enhancement of the performance monitoring utilities, esxtop and resxtop. The esxtop/resxtop utilities now provide visibility into the performance of NFS datastores in that they display the following statistics for NFS datastores: Reads/s, writes/s, MBreads/s,MBwrtn/s, cmds/s, GAVG/s(guest latency).

– VMware ESX 4.0 Update 2 Release Notes
– VMware vCenter Server 4.0 Update 2 Release Notes
– For a complete list of supported guest operating systems with this release, see the VMware Compatibility Guide.

See the SMB solution which fits your needs.

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| Filed Under: Server Virtualization Tagged With: ESX 4 Update 2, ESXi 4 Update 2, VMware vSphere 4 Update 2, vSphere 4 Update 2

About Vladan SEGET

This website is maintained by Vladan SEGET. Vladan is as an Independent consultant, professional blogger, vExpert x16, Veeam Vanguard x9, VCAP-DCA/DCD, ESX Virtualization site has started as a simple bookmarking site, but quickly found a large following of readers and subscribers.

Connect on: Facebook. Feel free to network via Twitter @vladan.

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