Mass-Data question

Hello friends,

I have a question. Currently I am planning a new project that should
collect really much data. My question is:

What should I do if the disk-space is not enough? Is there something
to distribute data over several machines and to collect the data with
a select statement if required? The informations stored are needed to
be analyzed.

It is a enterprise-computing project currently in a development and a
little bit planning phase, I want to use
postgresql, but how should I handle real mass-data?

Don´t tell me to enhance disk-space, whatever we use it´s not enough.
We need more than one machine and we need to analyze the data over
several machines if possible with one select statement... or is there
a better idea how to handle really much data? Its important to us to
have realtime-analysis so we can not let the user wait for whatever.

Sorry for this question but I have a problem with that thingie.

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Best regards,
Boris Köster mailto:koester(at)x-itec(dot)de