September 2018
Beginner to intermediate
174 pages
3h 27m
English
Content preview from Designing AWS Environments
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Instance storage
Instance storage is SSD, or hard disk storage, that is installed in the host machine. Since it is local, you can get high disk throughput and high input/output per second, known as IOPS. However, one big caveat is the ephemeral, temporary nature of instance storage. When your instance is running, it is occupying a slot in the hypervisor of a host server. So, it has access to its share of the host machine's local storage.
However, when an instance is stopped or terminated, it is removed from the hypervisor slot, and that frees the slot for another instance to occupy it. So, to make sure that no one will be able to access your data, the local storage for your instance is wiped, and any data that you wrote to the volume is gone. ...
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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.