dear respected sir/gurus

i was advised to post each question seperately so i am posting each question seperately.

we are using DFS management over windows 2003 std edtion r2. it work only on windows 2003/2000 environment. we do have branches that are connected over vpn.

this is the product/plugin/addon design builtin given by microsoft.

DFS management, work entirely different way as compare to others replication software like vertias/symtanc replicator exec.but it take lot of bandwidth however we have bandwidth control under DFS but failure over vpn, and sucess within LAN

so everyday as per schedule the flat data like word,excel,pdf,images used to come to head office on our backup machine.

can you suggest and advised the alternate of this using linux enviornment. what are possible software i can use it?

kind regards
salim