Synchronizing huge amounts of data at remote locations can be difficult. VPN or web services aren’t exactly know for their speed, so ou might want to use a USB hard disk to synchronize and then move it to the second location for another sync. Western Digital is offering a 320 GB hard disk which should be enough for HUGE amounts of data (for file or Outlook sync).
Nice detail: The hard disk gets its power from the USB cable, so you won’t need an extra power connection.
Details and a foto are available on Golem.de.