I'm trying to set up a good home data backup solution and am having trouble finding software that would allow me to:
1) Have 2 identical external hard drives. 1 master and 1 slave.
2) Use the master actively to save, modify and delete files.
3) Be able to plug in the slave and run some software that syncs all changes from the master to the slave since the last sync.
Basically create a sort of asynchronous USB raid 1. I'm running OSX 10.8