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Buy blade PCs, say datacentre experts

But do we believe them?
Friday, 9 November 2007, 12:37

BLADE PCS ARE the way forward for companies that wantto save energy, according to a pair of datacentre design outfits.

Galileo Connect, which styles itself as "the globalpioneer of the pre-designed datacentre", and the daftly-named consultancy hurleypalmerflatt, say their joint survey found that blades halve power bills compared to desktop PCs, reduce carbon footprints (dread phrase), and improve the image of firms that use them.

The designers back up their findings by citing Carbon Trust research showing that 15 per cent of all UK energy consumption is by office equipment, and that this could rise to 30 per cent items by 2020.

Hmm. There’s no doubt that the fat beige box is a power hog but groups like the Climate Savers Initiative are already trying to do something about the fact that PCs lose about half of their electricity between plug socket and CPU. PC blades are an interesting concept but they don’t do a lot to help mobile PC users, which is getting on for half of us here, and more than half in countries like the US and Japan (and a lot more than half of heavy-usage folks, we suspect). Also, laptops are often used on battery charge rather than with an AC connection, which is A Good Thing.

And here's another thing: saving power on office equipment is fine but few companies seem to have a good strategy for saving on other power hogs such as lighting, heating or aircon. And very few have much of a policy about turning off screens or PCs. Just look around your office when you’re working late, or look at London next time you’re landing at Heathrow: the place is lit up like a Christmas tree whether its 5pm or 3am.

Another problem is that the environmental arguments about computers have been hijacked by the PR industrywith outrageous research claims handed out like confetti at a wedding. This latest research suggests UK businesses are wasting £61 million a year. The suspicion remains that vested interests are using statistics in the same way the drunkard uses a lamp-post – more for support than illumination.

Also, have you noticed that the same companies peddling a green line today (hullo Sun, IBM, HP) arevery similar in appearance to the companies that dealt for many years in gas guzzling boxes that were jam-packed with toxins? Could they perhaps be related? µ

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Comments
but what about power and cooling

In theory, there is merit to the above; in practice, it's not achievable in the majority of datacentres. At issue is increased heat generated from the high rack density associated with blades. The majority of datacentres do not have the cooling capacity to handle a fully stacked rack of blades. I wonder what the expert has to say about that.

posted by : Prismm, 09 November 2007 Complain about this comment
DC

If the data centres switched to a DC power network at 170v or 320v they would save quite a bit of power (reactive mainly). The servers wouldn't even need modifying to work at this voltage.

posted by : Nick, 09 November 2007 Complain about this comment
careful now

Blade systems are currently really only of use when you are short of space. Otherwise what you are doing is buying into an expensive infrastructure and a single source supplier.


posted by : geoff, 11 November 2007 Complain about this comment
Virtualisation

Anyone who ever run Citrix Farms on blades now want to go back from Blade Hell.
ESX server will do better job any time.
Just stand behind blade rack - sauna.

posted by : GvinPIn, 11 November 2007 Complain about this comment
Conservation of Energy

--[Also, laptops are often used on battery charge rather than with an AC connection, which is A Good Thing.]--

Errr, I hope you don't think that this is because the energy when running on a battery comes out of thin air or something! If the power settings are the same in AC and battery mode, the power usage will be the same.

However, if the laptop (as with mine here) runs on fairly heavily battery-optimised settings to maximise lifetime when away from AC, what you say has some truth to it.

Generally, I would have thought laptops would be "greener" as they're designed for lower power usage and lower material (weight) usage too. Though anyone who knows to the contrary please step in...

posted by : Stephen Brooks, 15 November 2007 Complain about this comment
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