Network performance bottlenecks and SSDs

Dennis Martin talks about how SSDs can shift performance bottlenecks away from storage and onto the network in this Expert Response.

With fast servers and high-performance flash storage, will performance bottleneck just shift out to the networks...


They certainly can. We have been doing a lot of testing with SSDs in our lab, and we have begun to see interesting things happen when you put SSDs, especially in large quantities, in a system. We have seen performance bottlenecks move away from storage now, which is the first time I have ever seen this. In some cases, the bottleneck moves to the network, and in others, CPU [utilization] goes way up.

People need to ask, 'How is my network architected? Is 1 Gigabit Ethernet going to be enough?' Not really. I have been saying for a while now that SSDs and 10 Gigabit Ethernet, SSDs and faster speeds of Fibre Channel, go very well together.

Some of our testing has shown that when you deploy SSDs, CPU utilization can go way up, like 50% for one VM. How many of those can you put in a box? You can get two. People are going to have to rethink both their networking and their CPU physical-to-virtual ratios because of SSDs.

This was first published in December 2012

Dig Deeper on SSD array implementations



Find more PRO+ content and other member only offers, here.

Have a question for an expert?

Please add a title for your question

Get answers from a TechTarget expert on whatever's puzzling you.

You will be able to add details on the next page.



Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to: