[AusNOG] CNET: Google uncloaks once-secret server

[Sean K. Finn]

http://eshop.macsales.com/item/Hitachi/0A35415/

Power  
	Requirement +5 VDC (±5%)
			+12 VDC (±10%) 

	Startup current (A, max.) 2.0 (+12V), 1.3 (+5V) 

	Idle 		 (W) 4.8 (2 disk) 		3.6 (1 disk)

So looks like yes, they require 5v too.



Internet Archive Nov 2003 Petabyte Box:
http://www.baumgart.org/petabytebox.pdf
Suggest 800Amps 240v. (Again with the 200-240). (And what suprises me here is that they guestimate only $10,000 for that setup, heh. Oh how copper prices have changed).

Big G's layout appears to have taken the cooler units from outside the box, and put them under the racks themselves, but kept the general hot isle cold isle layout very similar.

-S


-----Original Message-----
From: ausnog-bounces at lists.ausnog.net [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Bob Purdon
Sent: Friday, 3 April 2009 12:23 PM
To: Craig Askings; AusNOG at lists.ausnog.net
Subject: Re: [AusNOG] CNET: Google uncloaks once-secret server


Battery goes directly into the PSU, so presumably there's a charging
circuit in there.  I'd expect this to work a lot like a 48VDC system,
except at 12V.

The only thing that isn't explained - at least for me - is where they're
getting the 5V for the HDD's from (assuming the Hitachi Deskstar's
actually require 5V).  They may have a small DC/DC converter under the
HDD's for that though. 

> -----Original Message-----
> From: ausnog-bounces at lists.ausnog.net 
> [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Craig Askings
> Sent: Friday, 3 April 2009 11:45 AM
> To: 'AusNOG at lists.ausnog.net'
> Subject: Re: [AusNOG] CNET: Google uncloaks once-secret server
> 
> All the cables are at the front, makes sense from an access 
> and maintenance point of view.
> 
> Europe etc do 220-240v as well.
> 
> What I'm curious about, is that server picture has Nov-2007 
> on the HDDs. I wonder what design changes they have made in 
> the last 18 months or so. Not to mention what they have done 
> on the DC side that hasn't been disclosed to the public.
> 
> Craig Askings.
> 
> On Thu, April 2, 2009 9:27 pm, Sean K. Finn wrote:
> > The only thing unintuitive that I can see about the design 
> is that the 
> > power cord goes THROUGH  the server only to reconnect at the other 
> > side, and looks hard wired in the side of the chassis.
> >
> > The power supply shows 200-240Vac, so are we looking at an 
> Australian 
> > server?
> >
> > -Sean.
> 
> 
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