Does anyone know of any good software for syncing 2 disks via ADSL?
At the moment I have 2 external HDD's and I leave one plugged in over night to back up the server and take th eother home with me. I swap them every day but would like to set up a system whereby I leave one connected at work and one connected at home and have them sync over our ADSL2+ line.

Is anyone aware of any software that will do this?

Do you mean sync as in mirrored drive or just syncing data?

If its data I use iFolder to do my syncing, as as its intelligent iFolder will only sync delta changes thus avoiding a lot of network traffic. And its timesynced so perfect for data integrity

If mirrored, I am no help sorry

Here's one way thats a bit hardcore... but it's also free. You already have everything you need on your mac.

This could be done with rsync over a VPN, or even with some creative port forwarding.
Although, it's probably a bad idea given the limited bandwidth of ADSL2+ (even though its faster than regular ADSL). The process would be rather slow, and it would depend on what data was being synced.

Essentially, you run this command on the work machine:
sudo rsync -axv /dir/to/backup/ rsync://<ip of your home machine>/backup/

The home machine would need to be running, have the rsync daemon set up (see here), and also have port 873 port forwarded from the router on your home machine.

You can also use the -e option to rsync over ssh, which would be more secure than doing it without a VPN or anything.

rsync over ssh would be the more secure alternative.

pipsqeek

Muddie,

I use a piece of software called 'Synchronize Pro X' for my remote backups. It's a fairly inexpensive shareware product that performs scheduled copies / syncs between mounted volumes, which I run on the backup machine in an offsite location. The remote volume is mounted as a normal Appleshare volume - network connectivity is via IPSEC VPN between two Netgear routers.

In terms of network connectivity I've got VDSL (Transact cable) at both ends of the network providing guaranteed 1Mbps/3Mbps at both ends, so effectively it's a 1Mbps symmetrical VPN network. I copy about 500Mb of backup data each night - not entirely sure how long that takes but it starts and finishes whilst I'm asleep so I don't care too much either...

Hope that helps.

Thanks everyone I will check these options out.