[rdiff-backup-users] (Newbie question) – n o bandwidth efficiency in local backup mode?

[narniamay-td]

Hey all together out there,

I understand the documentation in a way that rdiff-backup only operates in a 
bandwidth efficient manner if a remote machine is involved. Am I right on this 
one or not?

Why I am asking:

I have a virtual private network (VPN) connecting two networks over the 
internet (office network and home network). Both networks consist of Windows XP 
machines only. I have a shared drive on one of the PCs in the home network 
mapped as a network drive (drive letter x:/) on one of the PCs in the office 
network.

The question is:

Does rdiff-backup works less efficient if I run the program like this:

rdiff-backup d:/some/folder/on/office/network/computer 
x:/the/mapped/network/drive/which/is/actually/remote

Compared to this command line:

rdiff-backup d:/some/folder/on/office/network/computer 
192.167.xxx.xxx::some/folder/remote

Or does rdiff-backup make no difference?

If rdiff-backup does make a difference do I have to install a SSH service? Or 
is SSH only needed if files are backed up from Windows to Linux?

Thanks for your help

Amely

P.S.: Sorry for my bad English.

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