WHILE PUTTING TOGETHER THE PROPOSAL that eventually became this book, the aim was to write a
troubleshooting guide that covered the additional tools available from the SQL Server community.
It soon became clear, however, that to effectively talk about the tools, so many digressions were
necessary to explain the results that the fl ow and impact were interrupted. The decision was made
to alter the approach to include architectural information, not just on SQL Server, but on the whole
platform on which SQL Server depends.

If you’re troubleshooting an apparent “SQL Server” issue, you need to be able to troubleshoot the
underlying operating system and storage as well as SQL Server, so we wanted to bring together and
simplify the architectural details of these components too.
A fair amount of Windows and storage internals information is available already, but very little of
it that condenses and filters the right material to be easily consumed by SQL Server professionals.
The available material is either too light or too in depth — with nothing to help bridge the gap.

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