How we did it

Linux vs. Windows 2008 green test

We tested four servers, an IBM x3550, a Dell 1950, an HP DL160 and an HP DL360.

The server hardware components of the IBM x3550 were one Quad-Core Intel Xeon 2.66GHz CPU; 4GB of DIMMS memory; dual integrated Gigabit Ethernet ports; and, two 250GB 7.2K SATA hard disk drives using a LSI Logic SAS/SATA Controller.

The server components for the Dell 1950 were two Quad-Core Intel Xeon 2.50GHz CPUs; 16GB of DIMM memory; 73GB hard disk drives using a PERC integrated SAS/SATA daughtercard controller; and two embedded Broadcom NetXtreme II 5708 Gigabit Ethernet network interface cards.

The server components for the HP DL160 G5 were Quad-Core Xeon 3.00GHz CPU, 4GB PC2-5300 fully buffered DIMMs with Advanced ECC 2 support, an embedded NC105i PCIe Gigabit LSI Logic Smart Array E200/128MB Controller attached to two160GB 1.5G SATA 7.2K hard disks.

The server components for the HP DL360 G5 with dual Quad-Core Xeon 3.00GHz CPU, 12GB PC2-5300 fully buffered DIMMs, two embedded NC105i PCIe Gigabit LSI Logic Smart Array E200/128MB Controllers attached to four 72GB 1.5G SATA 7.2K hard disks (configured as RAID 5).

These servers were connected to a managed switched Gigabit Ethernet network via DLink switches, then to our controller system which was an HP Notebook running Windows Vista SP1. We monitored power consumption using a Raritan Dominion PX PDU with eight outlets that were directly read from an external meter. In turn, we calibrated and monitored the Raritan unit with a WattsUP? Pro Power Meter and its software through a USB port on the aforementioned HP notebook. We didn't start taking power consumption until after the initial power draw cycle was over. The initial draw of power each server made was often in excess of 50 per cent increase over the power consumed by a booted operating system.

Quiescent State Testing

We first installed each operating system on each server, set each server for balanced/performance settings, and we measured four hours of quiescent activity. We then reset the power savings to the maximum settings we could find, and retested four hours activity.

Active State Testing

We reset all servers and operating systems to the balanced/performance configuration and settings and then installed mail software on each server to measure power draw on an active server. Sendmail/procmail with 1,000 LDAP-linked users was installed on both SUSE and Red Hat in separate tests conducted in sequence. Alternately, for the Windows 2008 test we installed Microsoft Exchange Server with the same 1,000 users imported into Active Directory for this test. During each mail test, we bombarded the mail servers with e-mail targeted to the users continuously; the e-mails were generated from several concurrently running scripts to generate the continuous activity.

We then restarted the servers with maximum power savings settings/configurations as used in the quiescent tests in place, and tested again.

Join the Good Gear Guide newsletter!

Error: Please check your email address.

Our Back to Business guide highlights the best products for you to boost your productivity at home, on the road, at the office, or in the classroom.

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Thomas Henderson

Network World
Show Comments

Essentials

Lexar® JumpDrive® S57 USB 3.0 flash drive

Learn more >

Microsoft L5V-00027 Sculpt Ergonomic Keyboard Desktop

Learn more >

Mobile

Lexar® JumpDrive® S45 USB 3.0 flash drive 

Learn more >

Exec

Audio-Technica ATH-ANC70 Noise Cancelling Headphones

Learn more >

Lexar® Professional 1800x microSDHC™/microSDXC™ UHS-II cards 

Learn more >

HD Pan/Tilt Wi-Fi Camera with Night Vision NC450

Learn more >

Lexar® JumpDrive® C20c USB Type-C flash drive 

Learn more >

Budget

Back To Business Guide

Click for more ›

Most Popular Reviews

Latest News Articles

Resources

PCW Evaluation Team

Azadeh Williams

HP OfficeJet Pro 8730

A smarter way to print for busy small business owners, combining speedy printing with scanning and copying, making it easier to produce high quality documents and images at a touch of a button.

Andrew Grant

HP OfficeJet Pro 8730

I've had a multifunction printer in the office going on 10 years now. It was a neat bit of kit back in the day -- print, copy, scan, fax -- when printing over WiFi felt a bit like magic. It’s seen better days though and an upgrade’s well overdue. This HP OfficeJet Pro 8730 looks like it ticks all the same boxes: print, copy, scan, and fax. (Really? Does anyone fax anything any more? I guess it's good to know the facility’s there, just in case.) Printing over WiFi is more-or- less standard these days.

Ed Dawson

HP OfficeJet Pro 8730

As a freelance writer who is always on the go, I like my technology to be both efficient and effective so I can do my job well. The HP OfficeJet Pro 8730 Inkjet Printer ticks all the boxes in terms of form factor, performance and user interface.

Michael Hargreaves

Windows 10 for Business / Dell XPS 13

I’d happily recommend this touchscreen laptop and Windows 10 as a great way to get serious work done at a desk or on the road.

Aysha Strobbe

Windows 10 / HP Spectre x360

Ultimately, I think the Windows 10 environment is excellent for me as it caters for so many different uses. The inclusion of the Xbox app is also great for when you need some downtime too!

Mark Escubio

Windows 10 / Lenovo Yoga 910

For me, the Xbox Play Anywhere is a great new feature as it allows you to play your current Xbox games with higher resolutions and better graphics without forking out extra cash for another copy. Although available titles are still scarce, but I’m sure it will grow in time.

Featured Content

Latest Jobs

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?