If upload speed to the vCenter server is problematic, you can change the server’s security settings to allow it to receive both HTTP and HTTPS connections, then configure the vsphere job in the Orchestration Server to disable SSL. To change the settings:
At the vCenter server, change to the C:\Users\All Users\VMware\VMware VirtualCenter directory.
Use a text editor to open the proxy.xml file.
Navigate to this section of the file:
<e id="0"> <_type>vim.ProxyService.NamedPipeServiceSpec</_type> <accessMode>httpsWithRedirect</accessMode> <pipeName>\\.\pipe\vmware-vpxd-webserver-pipe</pipeName> <serverNamespace>/</serverNamespace> </e>
Change the value of the accessMode parameter from httpsWithRedirect to httpANDhttps.
Save the file.
Restart both the VMware VirtualCenter Server service and VMware VirtualCenter Webservices service.
Configure the Orchestration vsphere job to disable SSL:
In the Explorer tree of the Orchestration Server Console, expand the Jobs object to display the vsphere provisioning adapter job.
In the admin view, select the Job Configuration tab, then in the panel of the page, deselect the check box.
Save the settings and exit the console.
IMPORTANT:It is not possible to disable SSL for uploading files from the vCenter Server to the ESXi 5.1 host where the files are to reside. However, disabling SSL is possible to an ESXi 5.5 host, which might improve upload speed. For more information about the SSL disablement in vSphere 5.5, see VMware KB Article 2056830.