We Were planing to upgrade our environment to latest version 6.5 but after checking Compatibility Guide , we decide to choose to remain on the 6.0 level for now , so let’s take a quick look at how to upgrade VCSA 6.0 U1 with External PSC to 6.0 U3b , You can learn more about the features and improvements found in 6.0 Update 3b here
Upgrade VMware vCenter VCSA appliance to 6.0 U3b
before we begin with upgrade we need to take Snapshot from our PSC and VCSA , it’s better to take it from the host which house the computer resource of the appliance
To upgrade your VCSA appliance to 6.0 U3b with PSC first you need to upgrade the PSC and it’s partner then upgrade the vCenter
first step to upgrade the platform service controller PSC and it’s partner
so to we need to login to the VAMI interface. To do that, just navigate to https:// <Platform service controller address>:5480 and login with your root account. As you can see below, the appliance I updated was at version 6.0.0.10000 Build Number 3018521 .
navigate to update tab
Choose Install all updates.
After accepting the license agreement, the updates begin to install
after amount of time, the update was applied. a reboot is required to complete installation.
From the Navigator menu, select Summary and click on Reboot
after the PSC reboot and make sure all service are up and running now start with the other platform service controller PSC with the same steps , after finishing from upgrading the PSC and it’s partner now it’s time to start with vCenter
to upgrade vCenter , we need to login to the VAMI interface. To do that, just navigate to https:// <vCenter Appliance address>:5480 and login with your root account , with same steps as above
note : while upgrading the vCenter we go error message staging fails after doing some troubleshooting we found that the root partition don’t have enough space because of the audit.log size was 3.5 GB of the root partition to solve this we follow the KB 2149278
after clearing the audit.log the upgrade process for the vCenter work very smooth
at the end i hope this quick post will be helpful for your to upgrade VCSA with External PSC to 6.0 U3b
vSaiyan 
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