Each time we deal with data, experience has taught us that we can't underestimate the slight chances of hardware failover or any other sort of "all hell breaks loose" events. In database administration, our data is organized into tables. Everyone knows that the content of these tables can be dumped. Dumping is a technical term and in plain and simple English it means "exporting" the data into a file.
This exported file can be saved and stored at some safe place. It is generally advisable to store these important backups at a remote location. Many companies exchange backups between locations (if they have more than one) or pay for an expert service that does this for them. The key is to have the backed up drives (or tapes) stored at a different location, that is, by common sense, somewhat safe from natural catastrophes.
Of course, these are general backup guidelines as the OCS-NG database is not that crucial compared to the other services a company...