May 2015
Beginner to intermediate
228 pages
5h 34m
English
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Virtual machine snapshots
Snapshot enables the administrator to preserve the state of the virtual machine so that it can be returned to the same state repeatedly. For example, if the administrator does some patching or upgrading of the operating system of the virtual machine, snapshots give him the ability to withdraw those changes if any problem occurs during the operation.
Snapshot preserves both the state of virtual machine and data at a specific point in time. State refers to the virtual machine's powered state, which can be powered on, powered off, or suspended. Data includes the files that make up the virtual machine, including the disks, memory, and other virtual hardware devices like NICs. It is important to understand that snapshots should ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.