An EMC systems engineer has written a blog post about the VMAX FAST VP array. While it’s full of good advice, he unintentionally sums up everything that’s wrong with many applications in IT today: the knobs.
This is a problem I’ve seem more then once – the box has many nerd-knobs and therefore people feel they have to fiddle with them. Once they start to do that, inevitably something goes wrong and the performance drops. Then they start to fiddle some more to try and ‘fix’ it, until there are so many knobs turned it is impossible to maintain/troubleshoot.
