What does the VCenter appliance process create?

            The latest version of Vcenter appliance provides an opportunity to update the Vcenter server appliance and also provide complete information about this. The update process considers thanks for the tool of appliance management that provide complete support for manage the configuration or parts of the appliances. We take the backup of all the Vcenter server and save the information and methods used before. Then we use this process when we have an internet facing vCSA when the noninternet facing the vCSAs then we use different methods like ISO method, the web server method, and troubleshooting. It is very important to take a backup of all the processes and critical components related to the Vcenter server appliance.

What is the VM hardware specifications used in creating the appliance VM in this Lab?

             every machine of virtual with the VMware workstation 5.0 that provides a platform that can be seen by the guest operating system and includes the following devices like processor; single processor per virtual machine on symmetric multiprocessor systems and 64 or 32-bit legacy mode fit inside the virtual machine. BIOS: Phoenix BIOS 4.0 release 6 with VESA BIOS. Chipset: 82093AA IOAPIC, NS338 SIO and Intel 440BX-based motherboard. Virtual networking: support the Ethernet-based protocols, built in NAT supports the client software and support for nine or more Ethernet switches. Sound: emulate creative labs sound blaster audio PCI and sound input and output. Ethernet card: AMD PCnet-PCI II compatible and up to three virtual Ethernet cards. Mouse and drawing table, keyboard, USB port, Parallel ports, Series ports, floppy drives, SCSI devices, IDE drives, Graphics and memory.

What is the purpose of SSO and PSC, why it is used by the appliance and the hosts?

         VMware is not a new technology. It is considered a part of Vsphere 6.0 where the number of services already mentioned. These services include VM ware directory service, certified service, authentication framework, Syslog health service, common logging service, security token service, service control agent, HTTP reserve proxy, identity management services and many more. When the PSC deployed then it only deployed in the service s bundle with the PSC and many topologies are going to use in this regard.  SSO means single sign-on that is a centralized session and service of user authentication and in this one set of login credentials are get connected with multiple applications. It works with simplicity which is its real beauty. At the designated platform, the services authenticates you and provide you the opportunity to get access to plethora of services at any time.

What is the purpose of the vCenter server?

         to monitor the virtualized environment, VMware VCenter server is a data center management server application developed by the VMware Inc. it provides resource [provision and performance evaluation of virtual machines and centralized management and operations residing on a distributed center of virtual data. Primarily, it is designed for the VSphere, a platform of VM ware for developing the infrastructure clouds. It was previously known as the virtual center. It is going to install at the virtualized data center in the primary server and operate the virtual machine that works in that environment. It offers console to a central management and data center administrator to manage the virtual machine system completely. It also provides the ability to scale and adjust the computer. Memory, storage, and resource management functions and statistical information about the resources used at the virtual machines.

Before high availability can be configured, what must be done to the hosts prior to their operation?

             VMware HA provides a response when the VM is restarting on other hosts n the cluster that failed to survive. This is also considering that on shared storage the Protected VMs are hosted that is accessible in the cluster to other hosts. HA also available with all type of License VSphere like an essential plus. It also explains that not only free editions and essentials only offer this great feature. VMware HA can also monitor the operating system inside the VM and in case of failure restart by itself. For making the HA enable you have to develop a new cluster and VSphere HA is going turn on. For work of HA, host monitor must consider the enable mode as it drives the ESXi hosts in the cluster for exchanging the network heartbeat that shows that they are working well and also alive.

After all, hosts are added to your cluster, what are the total cluster resources available?

Ans. when the HA stop performs for admission control then the specific percentage of cluster and memory resources are going to use to recover from any failure. With this type of control, it also ensures that a specific percentage of memory resources and CPU is reserve for the failover condition. It helps in to calculate the total resource requirement, total host resource available for the virtual machines and measure the capacity of CPU failover and memory. Admission control forces that by the refusing to run any new VM if the left resources will never provide complete satisfaction in the cluster.

What is the propose of Vmotion?

             the VEmotion is consider a very effective tool as when the VM is running very poor to optimized the code then it stop working it for response giving condition. When the VM monitoring going to be able then the high availability make the problem easy to solve.

What high-level components need to be present for vMotion to work in VM ware?

             VM monitoring detects the heartbeat from the VM ware tools as it is going to install inside the VM. Those heartbeats never affect the smooth running of virtual machine network traffic. To the host VM kernel, they are a direct communication from the tools. With this also take the one step more and also use the APIs that is using for the state of monitor related to an application running inside the VM.