Access Same Partition From 2 Different Machines?

[kromosto]

Ok i have a question for server and it experts.

I will have 2 debian servers on the same local area network where no routable protocol flows. There will also one external disk controller (storage) that these machines connected through fiber. One server will write on a partition on external storage and other will read from there.

http://en.wikipedia.org/wiki/Shared_disk_file_system
http://en.wikipedia.org/wiki/Global_File_System

i found these and gfs2 seems to work for me but if no how can make this happen? or if this works is still there a better solution for debian?

Thank you.