Originally posted by Kickaha
PHDs let you have a laptop that syncs with a central server, then take that laptop off the network, go elsewhere, work, come back, hook in, and have it all sync back up again such that you can then immediately log onto any other machine on the network and have the same files.
It's new in 10.4.
If you log on to a new computer you will have to wait until it's all copied over to the new machine.
Portable Home Directories is a feature of Mobile Home Directories which means that the homedir physically is placed on the computer. The server only acts like a kind of backup, but you could
use the feature to sync two computers.
Mobile Home Directories appeared in 10.3, and that allows you to manage user accounts from the server - names, passwords, basic settings.
The main point of Portable Home Directories IMO is that with Tiger it is now possible to have data from mobile users placed on your servers so it's possible to take backups.
Since it hasn't been available in the last couple of seeds I haven't been able to test it thoroughly to see what a mess it will make if you're using two (or more) computers with one account using Portable Home Directories.
Remote Home Directories are all on the server, and the second you log in you have access to your data, but you can't take it with you.