Time
14 hours 13 minutes
Difficulty
Intermediate
CEU/CPE
20

Video Description

Lab 12 part 2. Taking a snapshot of a virtual machine This lesson discusses creating a snapshot. Snapshots are useful in that they allow you to delete files and make changes to your system. They can be done prior to applying a system patch or a system upgrade. It is important to remember snapshots take up a lot of storage; if they're not necessary then it's essential to get rid of them.

Video Transcription

00:04
all right. Our next task is to take a snapshot
00:07
virtual machine, and then we'll see how those work.
00:11
So what I'm gonna do is go to my Window seven council
00:16
and there's actually a snapshot button dedicated button where you could go to the VM menu and select snapshot from here.
00:26
So go ahead and take a snapshot,
00:30
and we'll call this one
00:34
original
00:38
desktop
00:40
background.
00:42
We're just gonna snap shot the virtual memory.
00:45
Another option is to cool. Yes, the guest file system.
00:48
What that means is, um
00:51
this is
00:52
when
00:53
virtual machines are being sent
00:56
two other hosts or other data stores.
00:58
Basically, a snapshot of this type is used
01:00
and quit gassing the file system slows everything down
01:04
so that they,
01:06
the virtual machine,
01:07
just file and the contents of the memory
01:10
shift over the network to the other host.
01:12
We're gonna leave that unchecked for our purposes.
01:15
Okay, so we click. Okay,
01:19
and we'll see our progress along the bond here will take out a little bit for the
01:23
to create the snapshot.
01:29
We'll come back in just a moment.
01:42
Okay? So snapshot just completed.
01:47
Now what I'll do is
01:49
personalized. My desktop.
01:55
I'm going to pick the United States theme
01:57
that we'll have a different background image.
02:01
Picture a lighthouse there. So let's take another snapshot
02:07
and we'll call this after
02:14
background change
02:21
and that's not shot will take a little while to complete a CZ. Well,
02:27
meantime, I can go to my V MNU snapshot
02:30
and then open up the snap shop manager.
02:40
So I was doing a different test earlier. I have an older snapshot
02:46
that I created before I deleted some files
02:52
so you can start to see the usefulness of the snapshot. Here
02:54
you can delete files. You can make changes to your system.
03:00
Maybe, um,
03:02
you do some snapshots before
03:06
applying a patch or some kind of upgrade.
03:12
Okay? And it's not such a ship,
03:14
just about done. And there it is.
03:16
So
03:19
I've got my original desktop background,
03:22
and after the background change,
03:23
any extra description information would be here.
03:29
So in order for us to see this in action,
03:30
what I can do is go back to my original desktop background.
03:36
Saul, Select that snapshot and click Go to
03:39
gives you a little chance to back out. I'll say Yes,
03:46
you know there was. When I reverse this snapshot was actually pretty quick.
03:49
It only took a few seconds, and I can see that I'm clearly back
03:53
to the configuration of my machine before I made the change to the background.
04:00
It has a little bit of extra work at the end to copy any changes to the disk
04:04
that have transpired since the last configuration change.
04:14
Then once that's completed,
04:16
I condone Revert back to
04:23
the background change.
04:34
Okay, so that's finished,
04:36
and you'll notice that it changed the structure of
04:40
Of where that you are here is a little bit
04:45
so I can see which
04:46
which
04:48
snapshot I'm actually using, which is my original desktop. I'll go back to mine after background change so we can go back the other direction.
04:59
Say yes to that,
05:00
and this will take just a few seconds and we go back to
05:04
snapshot that we that we took originally.
05:10
So it's very easy to switch back and forth if you're doing some kind of testing and you don't want to
05:15
go through complicated steps to undo something,
05:18
snapshot
05:20
is the way to go. You do need VM are tools installed
05:25
in order to use this, however, so be aware of that.
05:34
Okay, so now I don't want to use my snapshots and more. Um, actually want to delete some of these so I can select a single won't click delete,
05:45
take a moment because it does have to delete a fair amount of data
05:55
and the other option that we have
05:57
if you're if you're done with all your snapshots is too
06:00
delete. All
06:20
Okay, So now I'd like to delete all my snapshots,
06:25
so I'll just select any one of them and just say, delete all clicked lead. All
06:30
tells me it removes all of them. Don't want to continue. Yes, I do.
06:33
And this is when you're when you're done with all of your snapshot activity. You want to do this?
06:38
If you keep snapshots around
06:41
longer than you need to, they continue to grow
06:44
on your storage
06:46
eventually. If if this has left alone long enough and a lot of changes were happening to that system, then you will use up your all your available storage.
06:56
So this is a typical thing that
06:59
can but you And when you're in a production environment, you need to periodically
07:02
look for the machines in your environment that have snapshots and then go find out if they're needed. If they're not needed, then you want to get rid of him.
07:11
All right, that concludes. Lab number 12
07:15
in lab 13.
07:16
We'll actually be working with the V app, Virtual app.
07:21
So we'll create one powered on and then, uh, shut it down and get rid of it.
07:27
All right. Thank you. So you on lap 13?

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