How do you direct what gets written where, when an application is running?

We set rules in what we call “namespaces” through which you decide what gets written where when the app is running.  In general, you can specify for any VAA, where things are read from and written to, customized to your needs.  Rarely, you may want to specify that things be written to or read from the underlying OS.  So, if you have a monitoring system that wants to see log files, you could have those log files written to the underlying OS and everything else written to the VAA.  Namespaces give you lots of flexibility in how VAAs are used.