IncompatibleCpu The ESX server does not support hardware virtualization, which is required for FT. When the BIOS settings can be detected, VMware SiteSurvey may flag them as a problem for one of the following reasons: incompatibleProduct The server is running a VMware product other than ESX or ESXi. It is not always possible for VMware SiteSurvey to determine the BIOS settings. BIOS settings for FT FT uses hardware virtualization, so the BIOS settings for each ESX host must have that support enabled. In addition, ESX hosts must be running the same version of ESX to be paired together for FT. See the above table to determine which CPU types can be paired together. Pairing ESX servers for FT FT requires at least two (three recommended) compatible ESX servers. Edit Ready 2 5 20 ESX Versions and Build Numbers required by FT ESX hosts running the FT VM pair must be running at least ESX 4.0, and must be running the same build number of ESX. To avoid this issue, install the patch or ensure that the processors within the host system match. Without the above patch, when the Primary and Secondary VMs for FT are run on hosts with mixed steppings of Intel Xeon 5400 or 5200 Series Processors (CPUID Family 6, Model 23, steppings 6 and 10), the Secondary VM starts for a few seconds and then fails with the Primary VM going into the 'Need Secondary VM' state. Customers not using VUM can download this patch from. VUM customers are automatically notified when patches such as these are released. Compatible CPU Steppings and FT This issue has been fixed by a patch: the patch bulletin ID for ESX is ESX400-200906401-BG, and for ESXi is ESXi400-200906401-BG. VMware SiteSurvey will flag any CPU speeds that are different by more than 400 MHz. *** requires VMware vSphere 4.1 or greaterĬPU Speeds and FT When ESX hosts are used together in an FT cluster, their processor speeds must be matched fairly closely to ensure that the hosts can stay in sync. ** requires VMware vSphere 4.0 Update 2 or greater * requires VMware vSphere 4.0 Update 1 or greater To keep the SiteSurvey report up to date, it must be rerun each time a configuration change is made.Running all views can take several minutes, depending on how large your configuration is. A popup window will allow you to generate a report for the current view only, or for all views.Open the SiteSurvey tab and click the 'Run SiteSurvey' link.In vSphere Client, click on a cluster or host view.After installation, restart vSphere Client and connect to a vSphere Server. Double click the install utility and follow the instructions.vSphere Client must already be installed.Version 2.5.2 is the latest version.As VMware SiteSurvey is gathering information about your ESX hosts,it compares the configuration details against the requirements forusing the FT feature.(You can read an overview of the VMware Fault Tolerance featurehere.)The resulting report shows a complete list of configurationitems reviewed, along with an indication on whether that item requiresattention before using FT.Each of the configuration items checked by VMware SiteSurveyis described below.For questions or comments about this tool, contact the VMware SiteSurveyteam at: and Running SiteSurvey VMware SiteSurvey is a plugin for the vSphere Client which analyzes ESX hosts managed by vSphere Server and reports on whether the configuration of both software and hardwareis suitable for use with the VMware Fault Tolerance (FT) feature.The VMware SiteSurvey tool is availablefor download at.
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