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vSphere

esxi

vcenter

vcenter server

vmware esxi

vsphere 7

what is vmware tools

what is vmware

what is vcenter

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hi everyone in this video we will

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discuss about very basic but sometimes

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confusing terms about the difference

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between esxi and vcenter server

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so the discussion starts with very basic

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concept that we have some computer on

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and that computer we have these

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resources we have Ram CPU hard disk and

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Nick so most of the time these resources

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sit idle they are not used for any

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purpose and now to efficiently use the

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resources available on any computer

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we use a concept of virtualization and

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virtualization is a process of creating

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software-defined computer software

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defined computers are basically virtual

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machines

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so

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we can create virtual machine multiple

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virtual machines which are basically

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computers you can see on a single

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computer we can have multiple virtual

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machines on every virtual machine we can

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have different things running maybe we

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can have some website here we can have

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database here we can have something else

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but now to create those virtual virtual

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machines we need a piece of software

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that is known as hypervisor and there

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are multiple hypervisor by different

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vendors and esxi is basically is the

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hypervisor by VMware

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so it means esxi is a virtualization

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software that is used to create multiple

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virtual machines so that's the best

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definition of esxr

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in addition

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esxi is also known as bare metal

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hypervisor or the type 1 hypervisor

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which directly runs on physical server

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without a need of any underlying

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operating system

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so in the type

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2 we have the operating system but here

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we don't need any operating system so

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that is ESX the basic thing is that that

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is the hypervisor needed to create

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computer-based computer that is known as

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virtual machines so that is something

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esxi is

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and see

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for example here we have NDS I have

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taken this from VMware website so let's

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say we have a hardware and on that

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Hardware we have installed this esxi

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VMware esxi that is the virtualization

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software and with the help of that esxi

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we can create multiple virtual machines

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and you can see these virtual machines

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are basically using the resources from

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this physical machine so this physical

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machine can have Ram network interface

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card hard drives whatever they have they

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will be shared among all these virtual

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machines and this is this is something

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which is going to manage it yes so

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that's the job of esxr

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and on there's virtual machines they can

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have their own operating system they can

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have their own application program as we

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discussed in our previous slide and now

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you can see instead of one esxi we can

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have multiple esxr we can have multiple

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Hardwares and in those Hardwares we can

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have multiple esxi so in this way we

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actually create a data center so that's

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a concept of being used in the cloud so

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anyway instead of one the single esxi we

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can have multiple esxi machine and the

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job of all the sxr machine is to

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facilitate us to create multiple virtual

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machines

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now in this situation we would like to

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have some Central entity to manage all

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these virtual machines so let's see if

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first let me remove this so now to

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manage all these esxi machine be some we

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need some centralized entity So This

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vcenter Server is basically a

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centralized management platform which is

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used to manage all these ESX Ram

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machines you can see here we have this

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esxi and on that esxr we have these

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virtual machines and in this ex I we

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have these machines and these all

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virtual machines available on multiple

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ESI s esxi hosts can be managed with the

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help of vcenter server

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and we can access this vcentered server

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using vsphere client so these are the

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vsphere client we access this vcenter

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server and vcenter server is going to

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manage all these VMS and these VMS are

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basically created on this host machine

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so now I think in this Slide the the

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difference is very much clear that esxi

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is basically a host where we can create

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virtual machines and now to manage these

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multiple ESX esxi we have this vcenter

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server

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so let's go to the next maybe see let's

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see this so with the help of vcenter

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server we can actually create configure

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and monitor virtual machine so for

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example if you want to create virtual

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machine on this host or maybe on this

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host we can create it with the help of a

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central server so this is something we

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can do

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and then the second thing is that This

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vcenter Server can be used to configure

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or to set up high availability and all

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tolerance

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so high availability is used to minimize

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the downtime by restarting the failed

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virtual machine on an alternative 4

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server so let's see what happens here

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what does high availability do it says

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that if one of the virtual machine fails

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let's say this virtual machine fails

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then this can be restarted maybe some on

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some other host to avoid any downtime

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and here this is also can be used to set

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up fault tolerance so in the in the case

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of all tolerance vcenter actually

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creates a shadow instance of any virtual

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machine and in the case of any hardware

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failure the virtual machine can be can

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be initiated or can be started with the

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help of Shadow instances so that is the

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job of fault tolerance and that's

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actually

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um done with help office Android server

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so these are more functions of a central

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server which I'll try to explain it here

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and then this vcenter server is also

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allow us to enable vmotion and vmotion

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is a live migration of virtual machine

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between who so maybe if we want to move

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this virtual machine from this host

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because of some problem if you want to

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move this virtual machine and to

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somewhere else so we can do this even

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when the virtual machine is in powered

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on State

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and then one more function of vcentered

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server is that we can also enable DRS

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our distributed resource scheduler and

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that is used for load balancing so that

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every Excel host has equal number of

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maybe virtual machines running on it

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so that is the function of esxr

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and on this slide this is actually again

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this taken from this website you can see

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we have multiple esxr hosts and they are

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being managed by vcenter server and in

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this last slide we are going to discuss

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the difference or summarize the

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difference between esxi and vcenter so

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esxr hosts they run virtual machines and

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they are used to manage physical

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resources available on the hardware or

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or maybe on our computers

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and vcenter server provides centralized

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management for managing multiple esxr

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hosts as we saw in one of the slides and

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this includes virtual machines this

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includes virtualized infrastructure and

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other Advanced features like we saw High

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availability and fault tolerance can be

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enabled with the help of vcenter server

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few words about vsphere or the VMware V

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sphere itself so VMware vsphere is

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basically a platform and in this

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platform we have multiple components so

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esxi and vcentered server are basically

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components of vsphere VMware vsphere and

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VMware vsphere can have some more

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components in it as well so this is not

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an individual component it is actually a

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combination of components and we call it

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a virtualization platform

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so it's a family of different software

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and management tools

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and now I would like to show this in

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VMware the difference between esxi and

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vcenter now you can see here in my

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VMware basically I have this esxi host

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and also have this vcenter

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and now to access this vcenter I have

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this vsphere client so I'll click it on

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vsphere client and I'm going to access

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that vcenter server using this vsphere

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client and for that I need to give my

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username and password

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and now we have given the username and

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password and we click login so remember

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we are using vsphere client to login

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into vcenter server so now you can see

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we have this host that is 192.168 and on

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for 148 so that is esxr host and we can

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manage this esxr host from this

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vcentered server and you can see we use

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vscale client and you can see in this

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piece will client this host is there

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this host is this one 148 and this has

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been added in this vcenter and within

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that we Center you can see that on this

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host one once machine virtual machine is

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running which is actually vcenter server

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so and in this way we can add actually

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more esxi host in this vcentered server

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and we can configure them and we can

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enable multiple functionalities or

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multiple features using this vcenter

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server okay so that's it I think that's

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the difference between esxi and vcenter

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server and I hope this can be helpful

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for some of you and thank you thank you

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very much hope to see you in summer

Description:

In this video we describe and present the difference between ESXi, vCenter Server and vSphere.

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