Thanks a lot for answering my questions. It seems the PM function is turned off on the forums? I also can't find a way to send PMs.

2 total no standby and no safety margin.

V-shape seems the best bang for the buck, isn't it?

We have a small 70kW unit in v-shape using 3 600mm fans.

Sound is not an issue as far as I know, but I guess this depends what dB level we are talking about.

Since currently we have no info at all (trying some online calculators) any info you could provide is very appreciated!

Thank!
Alex

PS: We are in Hong Kong and in the electronics field. So if we can offer some info in return (very unlikely seeing you are from the UK) don't hesitate to ask!