Hi Rickard, thanks for that.

I'm totally across what EBS is and does - I've just never used
instance-store backed EC2 instances. I thought it seemed odd that the AMI
would be stored on S3, rather than under the "AMIs" section of the
dashboard like the EBS instances, and wondered why that is.

On 24 November 2016 at 10:31, Rickard von Essen <[email protected]
> wrote:

> Instance store don't use EBS at all. An EBS AMI references a EBS snapshot
> which is used to boot the instance. AMI's for instance store backed
> instances does instead store a image of the root disk in S3 (a bundle),
> this image is encrypted with your key for security reasons.
>
> See http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/
> creating-an-ami-instance-store.html
>
> On 24 November 2016 at 10:41, Matt Black <[email protected]> wrote:
>
>> Hey folks,
>>
>> I haven't used the instance-store builder before - or indeed any
>> instance-store backed EC2.
>>
>> Could someone enlighten me as to why we need an S3 bucket and x509 certs
>> for this builder? Why not just store the AMI on EC2 like with EBS-backed
>> images?
>>
>> Cheers
>> Matt
>>
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