Posted by: tranquilpc | November 17, 2007

Power – to be, or not to be ?

footprintHow much does ‘power’ really cost.

Based on 0.11p / KWH (Kilowatt Hour) – the UK’s typical current domestic tariff, a 3KW electrical heater will set you back £0.33 per hour – simple really to calculate ? So use more efficient heating systems right – but what about your IT systems, especially those that need to run 24/7.

We have 8760 hours in each year, so any savings can be significant.

Let’s compare a low power Home Server (T7-HSA) and a recently launched ‘regular’ Home Server.  Can you make real savings ?

Take the T7-HSA (single drive mode) @ 24W idle *
0.024KW x 8760 = 210KWH (or £23.13 / year to run it). 

A similar, recently launched server (single drive) @ 52W in idle
0.052KW x 8760 = 455.5KWH (or £50.11 / year to run it)

It gets even more interesting as more drives are added.

The T7-HSA + 3x 1TB GP drives consumes 36W when idle
0.036KW x 8760 = 315KWH (or £34.69 / year to run it)

A similar, recently launched server + 3x HDDs, boasts 76W in idle
0.076 x 8760 = 665KWH (or £73.23 / year to run it)

Summary of savings to be made, low power vs standard home server:

1x HDD (Idle) SAVING £26.98 /year
4x HDD (Idle) SAVING £38.54 / year
4x HDD (full load) SAVING £46.00 / year **

Now if you are interested in saving costs, AND reducing your carbon footprint, remember power consumption is DIRECTLY related to carbon emissions.




Tree Hugging ?

So- you don’t have to be a tree hugger to think about making savings – just think about your bank balance too ! 

See what a ‘tree hugger’ (Paul :)) had to say about his Home Server SAVING experience – here. 
(PS – Paul is not so cute as the girl in the picture !)

Paul indicated a saving of 220 W – that’s an annual saving of over £210.00 !! 

Think about your bank balance, your carbon footprint – or our children ?



*        PC Pro Magazine measured 20W in idle, we measured 24W
**      Low power T7-HSA (full load + 4x HDDs) = 52W
          Recent Home Server (full load + 4x HDDs) = 99W

(figures not independently verified, data taken from published information / laboratory reports.)



  1. Just bear in mind that real carbon footprint includes the energy used in the manufacturing process of a typical home PC. That is 83% of the total energy used during a 3 year life cycle. That means if you buy a new PC to save energy it could be extremely false economy as far as the carbon footprint.

    (reply) – You may be right, I can’t comment on your ‘actual’ figures. We know there is a ‘footprint’ created before any new product hits the shelves (hence why we ensure that all of our vendors provide materials with high recycled contents ie our alloy cases are typically > 75% recycled aluminium). Our concern is a) to reduce it’s ongoing ‘costs’, and b) to ensure that the useable life expectancy is as long as possible – our MTBF on most of our products is 55,000 – 100,000 hours (based on historical data) – and at the end of product life, many of the materials are recyclable. It’s doing ‘your bit’ – and everyone doing ‘their bit’ too 🙂

  2. Make savings by scanning documents/archives and recycling

    One ton of paper from recycled pulp saves:
    § 17 trees
    § 390 gallons of oil
    § Prevents 60 pounds of air pollutants.
    § 7,999 gal of water
    § 4.200 kilowatt hours (enough to heat your home for half a year)
    § 3 cubic yards of landfill space
    § Scanning documents eliminates unnecessary paperwork and can make carbon savings.
    § Cost benefits are not just on space savings, archiving, (one five draw filing cabinet is estimated to cost a business £400 a year)
    § Time savings – retrieving documents
    § Protecting your documentation and disaster recovery
    § Health & safety no more lifting heavy boxes
    § All documents once scanned can be confidentially destroyed, pulped and recycled.

    This ecologically sound and makes savings on your carbon footprint.

    Call Veridata now and we will process free of charge an example of your paperwork so that you can assess our work – 01244350700


    Tim Craig
    Registered Office
    4 Heritage Court
    Lower Bridge Street
    Chester CH1 1RD
    01244 350700

    Operational Unit
    The Sidings
    Great Western House
    Foundry Lane
    Chester CH4 8RD

    You are welcome to inspect our premises

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s


%d bloggers like this: