Document Mirroring

[hybrid]

Does anyone know a way of mirroring a folder onto a pen drive in near enough real time?

Basically im just wanting to create a backup onto a pen drive of one folder.

I know i can use SyncToy and create a schedule for daily use, but what about instant copying?

 

[FunkyCowie]

Allway Synch can be set to automatically update changes instantly

EDIT: I use it for mirroring information on my x2 RAID 0 setup for a projects folder so if one goes down I still have all my most needed files.