Best practices for backups and disaster recovery aren’t tremendously different in the cloud than from a managed hosting environment. But they are more crucial since cloud servers are less reliable than physical servers. Also the security aspect may play a heightened role in the cloud. Here are some points to keep in mind.
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Intro to EC2 Cloud Deployments.
1. Perform multiple types of backups
2. Keep non-proprietary backups offsite
3. Test your backups – perform firedrills
4. Encrypt backups in S3
5. Perform Replication Integrity Checks