Most vRealize Automation appliance requirements are preconfigured in the OVF or OVA that you deploy. The same requirements apply to standalone, master, or replica vRealize Automation appliances.
The minimum virtual machine hardware on which you can deploy is Version 7, or ESX/ESXi 4.x or later. See VMware Knowledge Base article 2007240. Because of the hardware resource demand, do not deploy on VMware Workstation.
The appliance runs SUSE Linux Enterprise 11 64-bit. VMware does not support appliance modifications or customizations. Never add, remove, or update packages or custom scripts, including antivirus software.
After deployment, you might use vSphere to adjust vRealize Automation appliance hardware settings to meet Active Directory requirements. See the following table.
|vRealize Automation Appliance for Small Active Directories||vRealize Automation Appliance for Large Active Directories|
A small Active Directory has up to 25,000 users in the organizational unit (OU) to be synced in the ID Store configuration. A large Active Directory has more than 25,000 users in the OU.