VMware vCenter Server 4.x
Intel or AMD x86 (64-bit if installing vCenter Server 4.1) processor with two or more logical cores, each with a speed of 2GHz.
3GB RAM. RAM requirements may be higher if your database runs on the same machine. VMware VirtualCenter Management WebServices requires 128Mb to 1.5GB of memory which is allocated at startup.
2GB. Disk requirements may be higher if your database runs on the same machine.
Microsoft SQL Server 2005 Express requires up to 2GB free disk space to decompress the installation archive.
VMware vCenter Server 5.x
vSphere 5.1 introduced the vCenter Single Sign-On (SSO) component as part of the vCenter Server management infrastructure. This change affects vCenter Server installation. Authentication by vCenter Single Sign-On makes the VMware cloud infrastructure platform more secure by allowing the vSphere software components to communicate with each other through a secure token exchange mechanism.
Let us see the different parameters required for the installation of VMware vCenter Server
Minimum hardware requirements for vCenter Server
Two 64-bit CPUs or one 64-bit dual-core processor.
2.0GHz or faster Intel 64 or AMD 64 processor.
Processor requirements might be higher if the database runs on the same machine.
NOTE: The Itanium (IA64) processor is not supported.
The amount of memory needed depends on your vCenter Server configuration.
NOTE: Memory requirements are higher if the vCenter Server database or vCenter Single Sign On database runs on the same machine as vCenter Server.
The amount of disk storage needed for the vCenter Server installation depends on your vCenter Server configuration.
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.
1Gbit connection recommended.
System recommendations for performance based on deployment size
Medium deployment of up to 50 hosts and 500 powered-on virtual machines
Large deployment of up to 300 hosts and 3,000 powered-on virtual machines
Extra-large deployment of up to 1,000 hosts and 10,000 powered-on virtual machines
Hardware requirements for vSphere Web Client server component
At least 2GB. of which 1GB is for the Java heap and 1GB for
2.00 GHz processor with at least 2 or more cores
At least 2GB free disk space
Hardware requirements for VMware vCenter Server Appliance
Disk storage on the host machine
The vCenter Server Appliance requires at least 7GB of disk space, and is limited to a maximum size of 80GB. The vCenter Server Appliance can be deployed with thin-provisioned virtual disks that can grow to the maximum size of 80GB.
NOTE: 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
Comparison and Difference between vSphere 5.1 and 5.5
Comparison Type 1 vs Type 2 Hypervisor
Vmware Files Description
Configuration maximum comparison for VMware vSphere 5.0, 5.1 and 5.5
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