The Technology Chronicle

The hot-add and hot-plug of resources are very useful feature in vSphere where you can pile in more compute resources on the fly without a downtime for machines.Few points about this feature "Hot-add" refers to adding more memory to a VM whereas "Hot-plug" refers to adding a virtual CPU to a VM Inorder to change the hot-add/hot-plug status of a VM , the machine should be powered off i e if the feature is disabled, you should first shutdown the machine before you can enable it. This is enabled from VM settings-> options-> advanced->memory/cpu hotplug The feature is not enabled by default Minimum VM hardware version of 7 is required for hot-add/hot-plug to work. If you are using a lower version of virtual hardware, first you need to upgrade it Even if it hot add/plug enabled, for the hot add/plug to be effective, it should be supported by the VM guest operating system for the resources to be available to the VM Hot add/plug feature is not compatibl...

vSphere 5 components and features; Vmware ESXi : Well, this is the physical part of vSphere. The virtualization OS installed in  in physical servers and bastracts the physical resources of the server and distributes them across VMs. VMware vCenter : It is the vsphere centralised management software. It is essential for configuring and managing the full potential of vSphere say HA, DRS etc vSphere client: A client software that lets users connect remotely to Vmware ESXi and vCenter vSphere web client: A web interface that allows users to connect remotely to vCenter client or ESXi vSphere SDKs: Provides standard interfaces for VMware and third party solution to access VMware vSphere VMFS : A high performance cluster file systems for ESXi virtual machnes vSphere virtual SMP: Enables single virtual machine to use multiple physical processors simultaneously vMotion: Enables migration of virtual machines from one datastore to another without service interruption* vSphere HA: If the ...