MBL : How reliable it is?

[Shabuboy]

as Chaos311 said, that is another option, a NAS with more than one hard drive. However, that would be hardware redundancy, still is not a backup. Just want to make sure you understand the differences.

Here is a good article:

http://howto.cnet.com/8301-33088_39-57556308/digital-storage-basics-part-3-backup-vs-redundancy/