I am putting together a small file server/linux test box. I'm planning to set it up initially as a dual boot between linux and XP until I am more comfortable with linux. I am wondering what filesystem I should use for the data drive (800GB RAID array). I want the drive to be read/write accessible in both linux and XP. The only one I know of off that both can access is FAT32.

Is there anything other than FAT32 that will do the job or am I going to have to break the 800GB up into smaller chunks?

Also as a side note has anyone had any experience with the Promise SX4 drivers in linux?

I wouldn't recommend FAT32 for such a large drive. You'll regret that later on
NTFS is also a bad choice because of limited Linux write support...

I have heard that there are tools for Windows which let you access ext2 filesystems in Windows, maybe that would be a good solution! Anyway it would be a lot better to use this than to use FAT32!
I personally never used such a tool myself but I'm know it exists (Forgot the name, sorry...). Of course this will involve installing software on your Windows system, and I don't remember if the tool is free or not.

HTH,
nukkel