You are more than likely to run into a system that has more problems with politics that capacity.
These system usually have basic capacity issues related to diskio and memory that are impacting CPU utilization represented by waitio. But, because there are Money people driving decisions instead of Technical Leaders we end up with a major spend/project occuring instead of basic tuning.
Use statistics to tell the story. Lots of emotion surround these type of systems and its best to gather accurate statistics and be the provider of information to help people make decisions or reduce risk. When people are ready they will use the data and your message will get out.
iostat when used over a good sampling period is one of the best tools followed by looking at run queues off of a top command. Not everything can be resolved by an upgrade. Especially something like ftp security logging with debug that flogs the root disks.
Regards.
Scott.
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