Somebody suggested using Amazon EC2 to provide an incremental backup interface to S3. For the likes of rsync to be truly effective, you need to have an rsync program running near the data store. It struck me, you could use an EC2 instance with free, high-speed bandwidth to S3 to do exactly that.
Using S3fuse (currently down) I’m sure you could script something so users log in to the EC2 instance and then mount their S3 bucket locally. Then rsync would work pretty effectively I reckon.
Could even be an interesting business model.
Amazon EC2 has added two new instance types. Their standard instance has 1 virtual CPU and 1.7Gb of RAM for 10c (USD) per hour. The newly launched Large Instance has 4 virtual CPU cores (2 cores x 2 CPUs) and 7.5Gb of RAM for 40c per hour. The massive Extra Large Instance has a whopping 8 virtual CPU cores (2 cores x 4 CPUs) and a 15Gb of RAM for 80c an hour.
One of the beauties of the system is you can bring appliances on and off-line as you need them. You can even script your application to enlarge itself. However, the system is not without it’s drawbacks.
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