A general trend in SF series and movie computers is the lack of a backup facility.

Definitely one of the most important things in any kind of professional data processing, the need for externally storable backups is unlikely to be superseded by any advance in technology.

A typical Voyager sequence involving The Doctor often involves problems with his program - which, of course cannot be restored from backup, there is none. (Later in the show, some kind of hardcore hacking restores full functionality - still, it seems to be a waste of manpower.