Specifications

VMware vCenter Server Appliance Hardware Requirements and
Recommendations
Table 2‑8. Hardware Requirements for VMware vCenter Server Appliance
VMware vCenter Server Appliance Hardware Requirement
Disk storage on the host machine For most deployments, the vCenter Server Appliance
requires at least 70GB of disk space, and is limited to a
maximum size of 125GB. The required disk space depends
on the size of your vCenter Server inventory. The vCenter
Server Appliance can be deployed with thin-provisioned
virtual disks that can grow to the maximum size of 125GB.
If the host machine does not have enough free disk space to
accommodate the growth of the vCenter Server Appliance
virtual disks, vCenter Server might cease operation, and
you will not be able to manage your vSphere environment.
Memory in the VMware vCenter Server Appliance Using the embedded PostgreSQL database, the vCenter
Server Appliance supports up to 100 hosts or 3000 virtual
machines, and has the following memory requirements
n
Very small inventory (10 or fewer hosts, 100 or fewer
virtual machines): at least 8GB.
n
Small inventory (10-50 hosts or 100-1500 virtual
machines): at least 16GB.
n
Medium inventory (the maximum inventory supported
with the embedded database; 50-100 hosts or 1500-3000
virtual machines): at least 24GB.
Using an external Oracle database, the vCenter Server
Appliance supports up to 1000 hosts or 10000 registered
virtual machines, and 10000 powered-on virtual machines,
and has the following memory requirements:
n
Very small inventory (10 or fewer hosts, 100 or fewer
virtual machines): at least 4GB.
n
Small inventory (10-100 hosts or 100-1000 virtual
machines): at least 8GB.
n
Medium inventory (100-400 hosts or 1000-4000 virtual
machines): at least 16GB.
n
Large inventory (More than 400 hosts or 4000 virtual
machines): at least 32GB.
For inventory and other configuration limits in the vCenter Server Appliance, see Configuration Maximums.
Table 2‑9. JVM Heap Settings for VMware vCenter Server Appliance
vCenter Server
Appliance Inventory
VMware VirtualCenter
Management Webservices (tc
Server) Inventory Service
Profile-Driven
Storage Service
Small inventory (1-100
hosts or 1-1000 virtual
machines)
512MB 3GB 1GB
Medium inventory
(100-400 hosts or
1000-4000 virtual
machines)
512MB 6GB 2GB
Large inventory (More
than 400 hosts or 4000
virtual machines)
1GB 12GB 4GB
See “Configuring VMware vCenter Server - tc Server Settings in vCenter Server,” on page 137.
Chapter 2 System Requirements
VMware, Inc. 21