Does HP Vertica run on Windows and is it compatible with our existing Oracle SQL?

Question

I am new to HP Vertica. I read the installation documentation for HP Vertica, but it seems to be totally unix focused. Can we install HP Vertica under Windows?

Additionally, will we need to update our existing Oracle SQL commands for use with HP Vertica?

I'm also unclear on the Vertica terminology:

• Host: is a computer where the Vertica is installed.
• Instance: it is also a computer where the Vertica is in running state.
• Node: it is the combination of HOST & INSTANCE.
• Cluster: I am not clear about this. May be this is about the instances of Vertica running on different computers.
• Database : It is the actual installed database software where the data & catalog resides to which other nodes are connected (not sure about this also).

Please help me understand the basic concepts.