Lesson 1 - Virtual machines in the cloud environment
Video Activity
This lesson focuses on how virtual machines (VMs) fit into the cloud environment. There are different kinds of clouds: Private: the cloud is dedicated to a single organization, it is not shared. Public: could be accessed by multiple companies Hybrid: some parts can be accessed, some parts are private The cloud environment has advantages because it ...
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Video Description
This lesson focuses on how virtual machines (VMs) fit into the cloud environment. There are different kinds of clouds: Private: the cloud is dedicated to a single organization, it is not shared. Public: could be accessed by multiple companies Hybrid: some parts can be accessed, some parts are private The cloud environment has advantages because it allows for elasticity, resources can be increased and decreased on demand. It also allows for rapid deployment of new solutions.
Video Transcription
00:04
So the next thing that we're gonna talk about is how
00:06
the V sphere technology of'em wear fits into a cloud environment.
00:11
We don't spend a lot of time talking about this in this class.
00:15
There are
00:17
other classes related to
00:20
VM wears cloud solutions.
00:25
But the first thing you want to think about is the different types of clouds,
00:29
so I can have a private cloud
00:36
and I can have a public cloud.
00:43
And then there's also
00:45
hybrid.
00:51
So in the case of a private cloud,
00:53
most often what this is talking about is some organization.
01:04
Besides that, they want to use cloud technology where they access their applications, and all of their service is
01:11
basically through Web browser through a Internet connection.
01:17
But in this case, the cloud is dedicated to that. That organization on Lee,
01:23
they don't share it with anyone,
01:25
and this this provides the greatest level of security and control over how that cloud is used.
01:33
Ah, public cloud, on the other hand,
01:42
might be accessed by multiple organizations.
01:47
So in this case,
01:49
this is called a multi tenant environment, sort of like a multi tenant building. Either it's a a private building where one family lives in it or you live in an apartment where there's multiple tenants. Similar concept,
02:01
Uh, and so the advantage of of the security of afforded here is offset somewhat by
02:09
B. A.
02:10
He reduced expense of typical public cloud
02:15
environment
02:15
and, ah, hybrid, then
02:17
would mean that the private organization
02:21
connects us
02:23
some other applications and their private cloud and perhaps some of them
02:29
through the public cloud,
02:30
so you can have a, ah, split,
02:34
and that gives
02:35
a little more flexibility to organizations. They want to keep certain things in the private cloud
02:39
and other things in a cloud that's public. So we have a little more flexibility with how the user's access the data.
02:46
Several advantages to using the cloud environment.
02:51
For one thing, depending on how you got a configured
02:53
users or administrators can provisioned their own resource is to some extent,
03:00
and we can
03:00
grow and shrink those resources,
03:04
and we'll recall that elasticity.
03:07
So if I can grow and shrink my resource requirements
03:10
on on a moment to moment, they says that provides a truly useful tool for the administrator
03:17
to deal with a rapidly changing
03:20
demands on storage, networking and provisioning. New servers.
03:25
It also provides the ability to do rapid deployment of of new solutions.
03:30
So once you build a
03:31
server, you can clone it. You can
03:35
clustering and continue to build our capabilities as required by
03:40
your organization's needs.
03:44
Also, if we think about
03:46
in the private cloud, especially if I've got
03:53
several hosts
03:59
and I, uh, let's say I've got, you know, 10 hosts here.
04:02
If those were the traditional data center,
04:05
I I would have to.
04:08
And if they were physical servers, I would have to think about
04:11
what applications can I put on host number one? What once can fit on number two
04:15
and so on down the line? If I cluster these host together, I can then share. The resource is more effectively
04:21
to fully utilize them in a physical host environment. Quite often
04:28
you have unused capacity,
04:30
so someone buys a server. They put the applications on it. They it's up and running,
04:34
but maybe they're not using all of the available memory. They're not using all of the available processor capacity.
04:40
If I virtualized
04:42
bye applications,
04:46
I'll just put it
04:47
and a less here for APPA Nola's.
04:50
Then I can share. The resource is more effectively and probably get a higher consolidation ratio.
04:58
Which is another way of saying how many applications cannot run on one system at one time.
05:03
If I had a physical server, maybe I could run two or three large applications.
05:08
But if I virtualized everything, I might be able to run for five or 10.
05:12
It just depends on how you got to configure.
05:15
All right, so at this point we talked about some of the differences between physical and virtual machines.
05:21
We defined a virtual machine as having
05:25
applications with a guest, no West
05:27
virtualized running through the hyper visor, which translates the instructions
05:32
threw down through to the physical host.
05:36
We also talked about how the resources are shared
05:41
among the virtual machines running on the physical host
05:44
and touched ah, little bit on the concept of the private cloud, the hybrid cloud and the public cloud.
05:54
So that concludes Lesson one for Module two,
05:57
and the next lesson will be discussing the different interfaces for user's into the beast. Fair environment
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