This page will provide tips on one of the most underestimated necessities in the computing world: Backups. Protecting data from accidental loss is vital, and it is important to do so frequently because you never know when your hard disk will crash (or your house will burn down, or your laptop will get stolen, and so on...)
Where to store data
The contents of your home directory in the SfS are said to be backed up on tape regularly by the system's administrator, so you probably don't need to worry about that. But you probably also work a lot on your own machine. Copying the data frequently to an external hard drive protects them from hard disk crashes, but not from fires etc. So it is a good idea to make backups on remote machines.
Servers at work/school
Rumour has it that the quota in the SfS will soon be extend to 1 GB per student, which would make them suitable for backing up code, text documents, a small amount of graphics etc. The same holds for servers you may have access to by virtue of working at some department. But if you need more space and a more persistent solution that doesn't depend on some Hiwi position, you may want to consider spending a little money on a rental (probably virtual) server.
Todo: List of interesting offers
How to automate backups