For the past month or so, I’ve been using a great new WordPress back up plugin called Vaultpress. The creator of the plugin is Automattic, the company that also owns WordPress, so you know they know what they’re doing.
I signed up a few months ago, and since the company is still in Beta, they’ve been slowly awarding “Golden Tickets” that can be redeemed for the ability to install and use the plugin. The cost of the backup is $15/month, which is more expensive than the Amazon Storage I’ve been using, but I am told Vaultpress makes it much more simple to install a back-up in the event of a database problem.
If you operate a WordPress website where data loss or complete data wipeout would seriously hinder your business, you should consider Vaultpress. For a few of my sites, having a back up is critical, and I trust Vaultpress with my data backups. I recommend you apply for an account and decide later if/when you are given the Golden Ticket.