Wish there was a Mac version.
However, if you have drives shared on your home network, you can use pathsync on the pc to sync them to any shared drive, so yes you can copy to the mac...
There are similar free programs on mac... I'm not on mine at the moment but that's how I back up from my projects drive to a usb backup drive.
iMac i5quad/12gbRAM/1Tb Glyph drive/1Tb samples drive > Motu828mkII ---- Still run my GatewayM520 2.8ghz XP laptop. Video editing, 3D work and audio with zero problems.