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You can snapshot EBS volumes, however your EBS disk I/O will be blocked while the snapshot is being made, so you can't do it often on a large busy volume. You
by snorkel 14y ago
You can snapshot EBS volumes, however your EBS disk I/O will be blocked while the snapshot is being made, so you can't do it often on a large busy volume.
You can also raid EBS volumes together for realtime redundancy, but adds cost and complexity.
- EwanToo 14y agoTrue, you're probably better off running the replication at the database layer, which can normally by either synchronous or asynchronous depending on what people need. For people who don't want to spend the money on a hot standby, you can still produce the database log files from MySQL (or whatever you're using), and copy them off the machine onto S3 every few seconds, minutes, etc. There's no end of solutions to the problem but, for whatever reason, a lot of people don't see EBS as a potential problem area.