Hey Folks,

at work we have systems with many drives to the point to make line charts unusable, so I wrote a nifty tool to create a heat map out of a NMON file, it has helped me identify hot spots on servers and convince more than one that the disk I/O is isolated just to a few drives on the system, here is the link to the code:

http://code.google.com/p/diskheat/

regards,
enrique.