What is vCenter server for?

Question

VMware

Definitely a noob question, but I didn’t have any intersections with vmware and virtualizations in general.
Everywhere they write that the vCenter server / vCenter appliance is needed to manage and configure the virtual infrastructure . But after all, I can do this through vSphere Client or its web version by connecting to the hypervisor, i.e. add, remove virtual machines, manage privileges, etc.

There is a problem in terminology.
Please explain what vCenter server is for, whether it is possible to do without it and whether its functionality overlaps with vSphere Client.

Answer 1

What about when you have multiple hypervisors? And do you need to carry cars back and forth between them? Or carry between different datastores? And if you need fault tolerance VMs? In short, connecting to one hypervisor is great. You don't need vCenter for this. But when you have two or more of them (hypervisors), then through vCenter you can at least manage both hosts from one point without switching between them. Well, plus all of the above-listed - without vCenter is not implemented at all. No, of course there are crutches for most of this. But these are crutches.

Answer 2

vCenter cluster management.
https://www.vmware.com/ru/products/vcenter-server.html

Answer 3

vcenter combines multiple hypervisors into one or more clusters.

Answer 4

vCenter is needed when you have more than one host. These are:
- centralized management of all hosts in one console
- migration
- clusters
... and many other baubles that, in principle, are not needed by a single host.

Answer 5

in the sphere there are simply not a bunch of features that are in the center of
the sphere, such a local manager, and the center is global