vCenter Server Virtual Appliance Hardware Requirements

The VMware vCenter Server Appliance can be deployed only on hosts that are running ESX/ESXi 4.x or later.

This table outlines the VMware vCenter Server Appliance requirements:

Component	Requirement
Disk storage on the host machine	At least 7 GB A maximum of 80 GB
Memory in the vCenter Server Appliance	Very small inventory (10 or fewer hosts, 100 or fewer virtual machines) – at least 4 GB Small inventory (10-100 hosts or 100-1000 virtual machines) – at least 8 GB Medium inventory (100-400 hosts or 1000-4000 virtual machines) – at least 13 GB Large inventory (more than 400 hosts or 4000 virtual machines) – at least 17 GB VMware vCenter Server Appaliance 5.1 Medium inventory (100-400 hosts or 1000-4000 virtual machines) – at least 16 GB VMware vCenter Server Appaliance 5.1 Large inventory (more than 400 hosts or 4000 virtual machines) – at least 24 GB

This table outlines the recommended JVM Heap settings for VMware vCenter Server Appliance vCenter Server Appliance Hardware:

vCenter Server Appliance Hardware	Tomcat	Query Service (QS)	Policy Based Storage Management (SPS)
Small inventory (1-100 hosts or 1-1000 virtual machines)	1 GB	2 GB	512 MB
Medium inventory (100-400 hosts or 1000-4000 virtual machines)	2 GB	4 GB	1 GB
Large inventory (more than 400 hosts or 4000 virtual machines)	3 GB	6 GB	2 GB
VMware vCenter Server Appaliance 5.1 Large inventory (more than 400 hosts or 4000 virtual machines)	3 GB	12 GB	2 GB