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If you choose to use MyISAM, you can attempt to manually repair tables that become damaged after a crash by using the REPAIR command (see: http://dev.mysql.com/doc/refman/5.5/en/repair-table.html). However, as noted in the MySQL documentation, there is a good chance that you will not be able to recover all your data.

[https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Overview.BackingUpAndRestoringAmazonRDSInstances.html#Overview.BackupDeviceRestrictions]

3. Try to ensure that you get good snapshots.

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