I have the WD MyBookStudio 1TB external HD and im facing the issue of using it for backup for both my Pc and Mac. What is the optimum way of using it for such a purpose?
Errrhh... The NAS style disks usually are, pardon my french: Crap. MacDrive would work, but ain't free. And I'm not entirely sure whether it works completely for backup purposes, because you'd have to install at least MacDrive again in order to bring your files back, which you probably only have on your backup. ... I just mean it could make things more complicated than a dedicated NTFS partition.
Of course partitioning gives you a rather fixed ratio MacC, you'd have to decide beforehand which system generates how much backup etc., which means you probably will end up (after months/years) with one partition that has too much free space and one that has too little.
I did it the other way: Disks are usually formated Fat32 when you receive these, so I cut the 1TB disk in two partitions and formatted a 500 GB partition on MacOS Extended, so that the disk can be accessed by both PC and Mac.
There is a FREE program out there for Windows that allows for PC's to access Macintosh drives. I'm on vacation right now, and don't have access to my computer, but I downloaded it for my used Windows PC I recently purchased. The program was available on VersionTracker.com.