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. The vCenter Server machines must meet the hardware requirements.

Minimum Hardware Requirements for vCenter Server

vCenter Server Hardware

Requirement

CPU

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

Processor

2.0GHz or faster Intel 64 or AMD 64 processor. The Itanium (IA64) processor is not supported. Processor requirements might be higher if the database runs on the same machine.

Memory

4GB RAM. Memory requirements might be higher if the database runs on the same machine.

vCenter Server includes several Java services: VMware VirtualCenter Management Webservices (Tomcat), Inventory Service, and Profile-Driven Storage Service. When you install vCenter Server, you select the size of your vCenter Server inventory to allocate memory for these services. The inventory size determines the maximum JVM heap settings for the services. You can adjust this setting after installation if the number of hosts in your environment changes. See the recommendations in Recommended JVM Heap Settings for vCenter Server.

Disk storage

4GB. Disk requirements might be higher if the vCenter Server database runs on the same machine. In vCenter Server 5.0, the default size for vCenter Server logs is 450MB larger than in vCenter Server 4.x. Make sure the disk space allotted to the log folder is sufficient for this increase.

Microsoft SQL Server 2008 R2 Express disk

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.

The recommended JVM heap settings for vCenter Server depend on your inventory size.

Recommended JVM Heap Settings for vCenter Server

vCenter Server Inventory

VMware VirtualCenter Management Webservices (Tomcat)

Inventory Service

Profile-Driven Storage Service

Small inventory (1-100 hosts or 1-1000 virtual machines)

1GB

2GB

512MB

Medium inventory (100-400 hosts or 1000-4000 virtual machines)

2GB

4GB

1GB

Large inventory (More than 400 hosts or 4000 virtual machines)

3GB

6GB

2GB

Note

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

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

Make sure that the vSphere Client host machine meets the following requirements.

vSphere Client Minimum Hardware Requirements and Recommendations

vSphere Client Hardware

Requirements and Recommendations

CPU

1 CPU

Processor

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

Memory

500MB (1GB recommended)

Disk Storage

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

Microsoft .NET 2.0 SP2

Microsoft .NET 3.0 SP2

Microsoft .NET 3.5 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

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.

Networking

Gigabit connection recommended