Amazon EC2 migration from one region to the other

Posted by Gnanam on Server Fault See other posts from Server Fault or by Gnanam
Published on 2010-10-30T13:26:46Z Indexed on 2010/12/29 15:55 UTC
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Filed under:

amazon-ec2

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sysadmin

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cloud-computing

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amazon-s3

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amazon-web-services

I'm using the following Amazon EC2 resources in the US East (Virginia) region:

1 Running Instance
1 Elastic IP
2 EBS Volumes
100 EBS Snapshots
1 Key Pair
2 Security Groups
5 My Own AMIs (customized based on my application stack)

My instance is based on Linux distribution (CentOS) and my AMIs are S3-backed. Both EBS volumes are mounted on this running instance.

We're planning to migrate our deployment to US-West region. Because Amazon EC2 resources are not shared across regions, my questions are:

What are all the factors that I need to consider in advance?
What are all the recommended & different ways of migrating each EC2 resources from one region to the other?
Are there any hidden risks involved during and/or after the migration?

Experts ideas/suggestions/recommendations on this are highly appreciated.

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