August 16th, 2008 
Simon Seagrave 
Here’s a link to a really useful pdf document from HP which provides considerations when sizing the power requirements for a single, or rack of servers.
It’s explains clearly the meaning of the following terms that you will come across: Input Line Voltage, Device VA Rating, Device Input Power, BTU’s required for cooling, Input/inrush and leakage current.
You may want to also check out the following HP links:
HP Power Advisor – Use this for HP Proliant G6 servers
HP Power Calculator – Use this is for HP Proliant G5 servers and below.
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My name is Simon Seagrave and I am a London (UK) based Senior Technology Consultant and vSpecialist working for EMC. 
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Hello
Does somebody knows something about a actual version of the Site Preparation Utility? I’m missing the DL380 G5-Server in this tool…
Thanks for any feedback
Hi Remo,
Click on this HP link and then select to use the online calculator – this has the DL380 G5 model.
Hope this helps,
Simon
Hi Simon
Thanks for the link! It’s just that what i’m looking for!
It helps, yes!
Remo