I understand the necessary overhead, but there are several applications where it is useful or necessary. For example, encrypting a database at rest. Pre-encrypting files doesn't help for that use case.
+1 after the news telling "DigitalOcean leaks customer data between VMs" http://hn.meteor.com/posts/6983097-347bd
I understand the overhead, but simply i need it, or i can't use digitalocean for my vms