PowerCLI Poster:http://blogs.vmware.com/vipowershell/files/2012/09/PowerCLI_5_1_Poster.pdf
VMware vSphere PowerCLI Change Loghttp://www.vmware.com/support/developer/PowerCLI/changelog.html#PowerCLI51
VMware vSphere PowerCLI User's Guide. vSphere PowerCLI 5.1 Release 1https://www.vmware.com/support/developer/PowerCLI/PowerCLI51/doc/vsp_powercli_51_usg.pdf
Download:http://www.vmware.com/support/developer/PowerCLI/index.html
VMware vSphere PowerCLI Overview & CMDLETS
https://www.vmware.com/support/developer/PowerCLI/PowerCLI51/html/index.html
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https://www.vmware.com/support/developer/PowerCLI/PowerCLI51/html/index.html
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