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Silentwolf
Vaprotan
Premium
join:2002-07-03
Kingsport, TN
clubs: | Re: Googles Servers Neat article. I remember a thread on Webhosting Talk about their servers mentioning the board they are using in those. | |
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robbob340
K.U. Sweet 16
Premium
join:2001-02-15
Wichita, KS | Thank you for posting this.  | |
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CanerisErik
Caneris
Premium,VIP
join:2007-10-03
Toronto, ON
| I actually saw this in practice in one of the data centres a couple of years ago 
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Erik - Caneris - Internet solutions and more. | |
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PunkGod
join:2003-02-02
| Can anyone tell me where I could get a PSU that has the red and black wire coming out of it for the battery backup.
I don't understand how they're powering the hard drives. I don't see any wires coming from the PSU and going to the hard drives. | |
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 | nnaarrnn
join:2004-09-30
Nitro, WV | Re: Googles Servers those are standard SATA drive with standard SATA 12v/5v/3.3v power plugs in them. | |
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Killa200
Premium
join:2005-12-02
Spring City, TN
1 edit | Re: Googles Servers they don't seem to have an orange 3.3v wire going to them.... which is no big deal as standard sata drives don't require it. | |
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kewlkeed
Grouch
Premium
join:2005-02-05
Knowlton, QC | I'm quite sure they don't normally exist. Google probably had these built specifically for their application.
No idea on the hard drives. Probably a cable somewhere just can't see it. | |
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| noobfragger
join:2008-01-16
Elk Grove, CA
 ·Comcast
2 edits | Re: Googles Servers The left most wires coming from the psu you see a Red,and yellow together, they go over the top of the mobo and plug into the drive. | |
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Killa200
Premium
join:2005-12-02
Spring City, TN
 ·AT&T Southeast
1 edit | Re: Googles Servers Look a little closer... that large red wire is going to the battery over on the right.
The entire psu is solid 12v, so more than likely that board you see right under the sata drives takes in the 12v and converts is to a pass-through 12 and 5v for the drives.
As from the article "Power supplies convert conventional AC (alternating current--what you get from a wall socket) electricity into the DC (direct current--what you get from a battery) electricity, and typical power supplies provide computers with both 5-volt and 12-volt DC power. Google's designs supply only 12-volt power, with the necessary conversions taking place on the motherboard." | |
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PunkGod
join:2003-02-02
| said by noobfragger  :The left most wires coming from the psu you see a Red,and yellow together, they go over the top of the mobo and plug into the drive. The red and black wire goes directly to the battery. The yellow and black wires go directly to the motherboard. The tiny wires coming from the power supply go directly to the plug visibly laying on the motherboard. | |
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kewlkeed
Grouch
Premium
join:2005-02-05
Knowlton, QC
| I give it a couple years and we'll soon now be seeing servers/comps with standard battery backups build directly into them like this. It would be nice as it's much more efficient than inverting 12V up to 110V only to be down converted to 12V and lower once again.
I use similar techniques on wireless sites and telecom sites I work on. Everything is standardized on either a 48V or 24V battery grid that can support the system for nearly a week without any additional power. Compared to that of perhaps an hour if it was done with traditional UPS systems.
--
Justin - DSLR resident grouch and Mr Negativity
TSI Fanboy - "Dontchya wish your 'net was hot like mine! Ohhh Dontchya!"
Have a nice day! | |
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alanhdsl
Premium
join:1999-10-09
Phoenix, AZ
·Qwest.net
| Re: Googles Servers The other great thing about this design is that it distributes failures. During a blackout, a few of the UPSs won't work, which is fine -- they continue running with a slight loss of capacity.
We're all familiar with data centers where the centralized UPS turns out to not work during a blackout and everything goes dark. | |
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Killa200
Premium
join:2005-12-02
Spring City, TN | Re: Googles Servers bet every 3 - 5 years suck though, lol | |
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