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Background of our setup:
We've hosted our web-based application in Amazon EC2 US East (Virginia) Region. Our instance is based on Linux distribution (CentOS) and AMI is S3-backed. 1 EBS volume (400 GB size) is attached to this instance.

Question:
We've planned to migrate our deployment to US West (N. California) Region. From AWS doc, I understood that for moving AMI, there is a command-line tool available - ec2-migrate-bundle. But for moving EBS volume across Region, currently there is no tool available.

I'm looking for easiest and/or fastest way of copying/moving EBS volume from one Region to another. Also, 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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Take a look at this post they explain how to do it. BTW the use cpipe to copy the content across the network, that means 400Gb over the wire :S

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Thanks for that useful link. In that post, there is a command cpipe -vt -b 1024 < /dev/sdf | netcat -q 1 ec2-hostname 9999. But in my CentOS 5.2, I don't find the option -q in netcat command. Any ideas? – Gnanam Jun 29 '11 at 12:21
@Gnanam I couldn't find that option on my nc... I don't know for what it is, also the man documentation do not say anything :S. I think you can try without it to see what happens – Christopher Valles Jun 29 '11 at 15:44
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