Windows using 2 drives

[Col_M]

Hi,
I currently only have one 5 year old 200Gb hard drive in my system. Although I have a server that regularly creates a backup of my computer I'm not too keen on keeping all my eggs in one basket so to speak. To fix this I'm looking at getting a pair of new drives, one for the OS and the other for storage.

The thing is that I've never let windows split its stuff over 2 drives before so I have a question. What other than My Documents (if anything) is fine to be moved over to the storage drive? I'm running XP at the moment

 

[Col_M]

Thanks for taking the effort to answer.
By home directory you mean the one containing all the user junk like my documents right?

If I'm honest I'm a home user and don't really need any redundancy in my computer as I have a server that can just plop an image back onto the computer if and when needed.

One other thing I'm wondering about is if I have all my data on another drive and decide to upgrade XP to 7 as I want to I guess it's just a case of telling it where "My Documents" is right?