Well, I've used PC-Bax for many years and haven't had any problem using this for both OS2 and Windows.
PC-BaX is a compact, fully-equipped backup software that offers an abundance of possibilities to users. Leading industrial companies and trading companies, financial institutes and insurance houses around the world have used PC-BaX successfully for years.
A special feature of the software is the user-friendly interface with the hardware.
PC-BaX offers an optimum of Performance and Usability. The product can be bound very simply into customer specific programs and routines. It is highly adaptable as shown by the wide range of customers using it.
There is also trials downloads available from following url:
As well, check this other topic regarding backup software.