Upgrading vRealize Automation 7.4 to vRealize Automation 7.5

Today I’m gonna upgrade my vRealize automation 7.4 to vRealize automation 7.5

I have a standalone architecture. I have following VMs in my environment

Windows 2012 that holds SQL and IaaS components
vRealize Automation 7.4 Appliance (7.4.0.645 Build 8229492)

Here we have some upgrade paths for upgrading to version 7.5:

vRealize Automation 6.2.5 to 7.5
vRealize Automation 7.1.x to 7.5
vRealize Automation 7.2.x to 7.5
vRealize Automation 7.3.x to 7.5
vRealize Automation 7.4.x to 7.5

Prerequisites on vRealize automation appliance:

18 GB of RAM
4 CPUs
Disk1=50, Disk3=25, Disk4=50

These nodes must have at least 5 GB of free disk space:

Primary IaaS Website
Microsoft SQL database
Model Manager

The primary IaaS witness node where Model Manager is installed must have the JAVA SE Runtime Environment 8, 64 bits, update 181 or later .you can find out your java version by issuing this command :

Java -version

To download and run the upgrade, you must have the following resources:

At least 15 GB on the root partition
5 GB on the /storage/db partition for the master vRealize Automation appliance
15 GB on the root partition for each replica virtual appliance

Before upgrade go to vRA and run NSX Network and Security Inventory data collection in your vRA console

If you upgrade from a distributed vRealize Automation environment that operates in PostgreSQL synchronous replication mode, you must change it to asynchronous before you upgrade

If you have vRealize business in your environment When you upgrade your vRealize Automation, you must unregister and register your connection to vRealize Business for Cloud.
Take Snapshot of all your vms!

Now lets upgrade the virtual appliance.At the first we should mount update repository to vRA appliance