The vCenter Server system is a physical machine or virtual machine with access to a supported database. The vCenter Server system must meet specific requirements. Also make sure that the vSphere Client machines meet the hardware requirements.

CPU – Two 64-bit CPUs or one 64-bit dual-core processor.

Processor – 2.0GHz or faster Intel or AMD processor. Processor requirements might be higher if the database runs on the same machine.

Memory – 3GB RAM. Memory requirements might be higher if the database runs on the same machine.

vCenter Server includes a service called VMware VirtualCenter Management Webservices. This service requires 512MB to 4.4GB of additional memory. The maximum Webservices JVM memory can be specified during the installation depending on the inventory size.

Disk storage – 3GB. Disk requirements might be higher if the database runs on the same machine.

Microsoft SQL Server 2005 Express disk requirements – Up to 2GB free disk space to decompress the installation archive. Approximately 1.5GB of these files are deleted after the installation is complete.

Networking – Gigabit connection recommended.

Note

Installing vCenter Server on a network drive or USB flash drive is not supported.

See your database documentation for the hardware requirements of your database. The database requirements are in addition to the vCenter Server requirements if the database and vCenter Server run on the same machine.

CPU – 1 CPU

Processor – 500MHz or faster Intel or AMD processor (1GHz recommended)

Memory – 1GB RAM

Disk Storage – 1.5GB free disk space for a complete installation, which includes the following components:

Microsoft .NET 2.0

Microsoft .NET 3.0 SP1

Microsoft Visual J#

Remove any previously installed versions of Microsoft Visual J# on the system where you are installing the vSphere Client.

vSphere Client 4.1

If you do not have any of these components already installed, you must have 400MB free on the drive that has the %temp% directory.

If you have all of the components already installed, 300MB of free space is required on the drive that has the %temp% directory, and 450MB is required for vSphere Client 4.1.

Networking – Gigabit connection recommended

The number of hosts and powered-on virtual machines in your environment affects performance. The following system requirements should be used as minimum guidelines for reasonable performance. For increased performance, you can configure systems in your environment with values greater than those listed here.

Processing requirements are listed in terms of hardware CPU cores. Only physical cores are counted. In hyper-threaded systems, logical CPUs do not count as separate cores.

Important

The recommended disk sizes assume default log levels. If you configure more granular log levels, more disk space is required.

Up to 50 Hosts and 500 Powered-On Virtual Machines summarizes the requirements for a medium deployment.

Up to 50 Hosts and 500 Powered-On Virtual Machines

Product

Cores

Memory

Disk

vCenter Server

2

4GB

5GB

vSphere Client

1

200MB

1.5GB

Up to 300 Hosts and 3000 Powered-On Virtual Machines summarizes the requirements for a large deployment.

Up to 300 Hosts and 3000 Powered-On Virtual Machines

Product

Cores

Memory

Disk

vCenter Server

4

8GB

10GB

vSphere Client

1

500MB

1.5GB

Up to 1000 Hosts and 10000 Powered-On Virtual Machines summarizes the requirements for an extra-large deployment.

Up to 1000 Hosts and 10000 Powered-On Virtual Machines

Product

Cores

Memory

Disk

vCenter Server

8

16GB

10GB

vSphere Client

2

500MB

1.5GB

If you install vCenter Server on any custom drive, note the following space requirements:

1GB on the custom drive for vCenter Server

1.13GB on the C:\ drive for Microsoft .NET 3.0 SP1, Microsoft ADAM, Microsoft SQL Server 2005 Express (optional), and Microsoft Visual C++ 2008 Redistributable

375MB for the custom drive %temp% directory