Does anybody have any thoughts on how to successfully backup a growing small business? We have a total of about 100GB that we currently backup on a daily basis to an external 2.5″HD (very portable). The amount of backup storage we need is increasing at a slow but steady rate, so that we will be exceeding it within a few weeks. When we do, I have to manually archive files on the client computers to reduce the amount of data that gets backed up. This is very time consuming and defeats the purpose of the automated task idea. In addition, there is only one backup set. The data gets overwritten/added on to on a daily basis. FYI, we run Dantz Retrospect to pull the files from 5 clients and one server (all OS X).

So here are the two goals we are trying to achieve:
1) Increased backup security by going to 2 or more sets (Right now there is only one medium, and once that gets overwritten or if it should ever break, there is no other backup layer)
2) Increased storage capacity to allow for future growth (Right now we have to either manually archive or buy a bigger HD each time we exceed our current GB limit)

Any thoughts on the subject are greatly appreciated. Thanks, Tim.