We did in place upgrade from 4.1 to 5.1 , 2 years ago with all vCenter components installed on Windows 2008 server except Update Manager and SQL server on separate VMs. Currently we have around 40 clusters/200 esxi hosts/1200 VMs. We need to upgrade it to 5.5 U2 envirorment. Also we have to build hybrid cloud based on this infrastructure. I would like to know what is the best way to upgrade environment like this where we are using vSS not vDS, simple install was used for 5.1 upgrade. do we need to put SSO, web client , Inv. srvs and vcenter on separate servers etc.do we need to use linked mode , heartbeat etc. If we vDS is better than vSS, do we need to upgrade with existing configurations than leter migrate vSS to vDS?
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