EC2 Instance Store

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Time
19 hours 19 minutes
Difficulty
Intermediate
CEU/CPE
20
Video Transcription
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>> Hey everybody. Welcome back.
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In this lecture we're going to be talking
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about EC2 instance store.
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Learning objectives are going to be to
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define instance stores a little bit about what they are
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then we're going to highlight the differences between
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instance stores and EBS volumes.
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This is going to be a short one,
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but hopefully something that
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you can take something away from.
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Instance stores, these are interesting.
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These are actually like
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temporary block-level storages for your EC2 instances.
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The storage is located on the same disk that are
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physically attached to the host computer,
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and the idea here with
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an instance stores that it's ideal for
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temporary storage of information.
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This is like things that are constantly changing,
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like buffers, caches, scratch disks,
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or a scratch data,
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and other temporary content,
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or for data that's even being replicated across fleets
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of instances such as: load balancers,
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and pools of web servers, and stuff like that.
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That is what an instance store is.
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Now, instance stores compared to EBS volumes,
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you have network drives with limited performance.
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You need them to run your EC2 instance.
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They're easy to deploy that come
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built-in with EC2 build process.
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With instance stores, little bit different.
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It's something you have to go a step further to do,
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but it's going to add that better.
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IO performance is going to be a femoral,
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so data is lost when this thing has stopped.
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It's really just there
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for those moments when
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you really have high-compute needs,
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or you're processing a lot of data,
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you're going to need to have a place
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where that processing could take place,
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that temporary data can be used for that processing.
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There's going to be risk of
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data loss during hardware failure;,
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so that's always something to consider,
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but again this is to add that buffer that
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we need for these host computers.
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If you're going to be backing this stuff up,
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if you're going to be using and you
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need to backup the data,
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it's going to be your responsibility because
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like I said data is
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lost when this instance store is stopped.
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That could be because you did it,
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that could be because of a hardware failure.
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Does it sound like AWS takes a lot of responsibility for
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this type of storage piece here,
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but it's something that is still beneficial and
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still does pretty well and something to keep in mind.
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I'm going to attach a link to
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the documentation on this one because
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there's not a lot that you're
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going to be tested on about this one,
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but you may see some questions on it;
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maybe one or two,
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so it's always good to just
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graze through some of the documentation,
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make sure you have
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a better understanding of what this is.
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If you don't know what the heck I'm
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talking about, that's okay.
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Go through this documentation,
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and hopefully fill in some of those gaps and of course,
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reach out to me if you have questions.
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I'm always happy to have
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a conversation with you guys about it.
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That being said I'm going to go ahead and jump
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over to the summary here,
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and then we're going to wrap this lecture up and move
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over to the next lecture.
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To summarize, we cover the differences between
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EBS and instance store talks a little bit about
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the characteristics of instance stores altogether.
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I want to hop over to the next one so that we can
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talk a little bit more about
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other storage services that are important to
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understand for your EC2 instances
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because you need to know what your options are.
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We'll go from there,
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so I'll see you in the next lecture.
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