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So now let's talk about EBS Snapshots.

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So, an EBS Snapshot is a backup

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at any point in time of your EBS volume.

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And for this, it's not necessary to detach your EBS volume

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from your EC2 instance but it's recommended.

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You can copy these EBS Snapshots

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across different Availability Zones

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or even across different Region.

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So, for example,

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let's take EC2 instance that has an EBS volume in US-EAST-1A

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and an EC2 instance in US-EAST-1B.

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So we can take a snapshot of the EBS volume.

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Okay, and thanks for that snapshot

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we can actually restore it in another AZ.

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So this is how you would transfer an EBS volume

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from one AZ to another.

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Next, you need to know about a few EBS Snapshots feature.

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So the first one is called the EBS Snapshot Archive.

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It's the ability for you to move the snapshot

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to an "archive tier" that is going to be up to 75% cheaper.

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So, if you do move this snapshot to an "archive tier"

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then it will take you from within 24 to 72 hours

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for restoring the archive.

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So it's not immediate.

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The other thing is to have a Recycle Bin for EBS Snapshots.

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So in case you do delete your EBS Snapshots

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instead of being permanently deleted

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then instead they're going to land in Recycle Bin.

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And so the idea with this

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is that you can recover them from an accidental deletion.

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And the retention for your Recycle Bin can be set

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from anywhere between one day to one year.

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The last feature you need to know about

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for your EBS Snapshots is called the Fast Snapshot Restored.

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So this forces a full initialization

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of your snapshot to have no latency on the first use.

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This is particularly helpful

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if your snapshot is big, very big

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and need to initialize an EBS volume

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or needs to instance out of it very quickly,

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but this feature costs a lot of money,

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so be careful when using it.

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Okay, that's it for this lecture.

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I hope you liked it.

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And I will see you in the next lecture.