We use cookies to provide you with a better experience. If you continue to use this site, we'll assume you're happy with this. Alternatively, click here to find out how to manage these cookies

hide cookie message
80,259 News Articles

Improvements based on small snapshots won't benefits datacentres: Enlogic

Understanding the variation of a process over time provides a bigger pay-off than taking small snapshots, according to Enlogic co-founder, Mike Jansma.

Jansma made the observation at the Datacentre Dynamics conference at Sydney, where he stated that a datacentre can not hope to control something unless it understands the variation over time.

Search for distributors in theDistributor Directory

To illustrate his point, Jansma spoke of a problem encountered by a customer of the power distribution unit (PDU) vendor.

"Every two weeks, a guy went out and measured the temperature of every rack because they wanted to optimise the airflow," he said.

"After each inspection, he writes the result down into an Excel spreadsheet to find the hot and cool spaces in the datacentre."

Following the inspection, Jansma said the person went out and made adjustments to airflow to ensure that there are not as many hot and cold spots in the facility.

"A fortnight later, he does the same thing, making approximately the same amount of changes, but there is not much effect," he said.

A bigger picture

Jansma said the issue with this approach is that the person does not know what is going on.

"They're trying to do the right thing by measuring and analysing the data, and trying to implement improvements," he said.

"The problem is that they are taking a snapshot in time."

So even though the person who measures the temperature may always do it at the same time every two weeks, Jansma said it was only at one specific condition at that time of day.

"He did not look at the average and variation, so he kept making changes that did not matter," he said.

Jansma said it also did not represent the mean average of that snapshot in time, and in the process, the person was unable to make any optimisations.

"By understanding variation over time and monitoring the data over that period, he would be able to reduce that variability and improve the cooling at the datacentre," he said.

Patrick Budmar covers consumer and enterprise technology breaking news for IDG Communications. Follow Patrick on Twitter at @patrick_budmar.

IDG UK Sites

Best camera phone of 2015: iPhone 6 Plus vs LG G4 vs Galaxy S6 vs One M9 vs Nexus 6

IDG UK Sites

In defence of BlackBerrys

IDG UK Sites

Why we should reserve judgement on Apple ditching Helvetica in OS X/iOS for the Apple Watch's San...

IDG UK Sites

Retina 3.3GHz iMac 27in preview: Apple cuts £400 of price of Retina iMac with new model