What is ESXi and vSphere? To recap, vSphere is a product suite. ESXi is a hypervisor installed on the physical machine. vCenter Server is a management platform for VMs. When you are working on a small virtualization environment, the vSphere client will be sufficient enough to maintain and manage virtual machines hosted on a few ESXi servers.
What is VMotion in VMware? VMware® VMotion™ enables the live migration of running virtual machines from one physical server to another with zero downtime, continuous service availability, and complete transaction integrity. VMotion is a key enabling technology for creating the dynamic, automated, and self- optimizing data center. benefits.
Can I use ESXi without vSphere? Yes it is possible to directly manage the ESXi host via vsphere client, but you will not be able to get the unique and good features of vCenter server like HA and DRS. So which means if your host goes down, your runnning VM’s will not have a fail over host.
What is cluster in VMware? A cluster is a group of hosts. When a host is added to a cluster, the host’s resources become part of the cluster’s resources. The cluster manages the resources of all hosts within it. Clusters enable the vSphere High Availability (HA) and vSphere Distributed Resource Scheduler (DRS) solutions.