I prefer mdadm to administrate my raid and I currently use a script to see the raid status. Running a (php)script to see the status is not exactly the most smooth experience for me so I have been looking for a GUI app / gnome gadget that shows me the current raid status. So far I have not found anything that I like. What do YOU use and recommend for this task?
GUI + RAID = strange.
Are you sitting 24/7 in front of the monitor to watch when it breaks? For this case you have monitoring software that alerts you by an appropriate channel (email, SMS, RSS, ...). But for me a GUI is not in the list of appropriate channels.
But probably you like raidmonitor.