In the past I’ve discussed a number of other solutions for monitoring disk capacity and looking into where that capacity is being utilized. But if you want to look into raw performance, then few tools are as useful as iostat. iostat is a command line tool that looks at the input and output statistics (thus iostat) for various disks. simply running the iostat command with no switches will show you a fair number of statistics about your system including per disk performance metrics, CPU utilization of those disks and average loads. Running iostat with simply a -d option will only show information relevant to disks. You can also follow the…