Feeds

Brocade-funded study says Fibre Channel faster than FCoE

It still costs an arm and a leg, but that's the all-flash array world for you

Maximizing your infrastructure through virtualization

A study funded by Brocade has found that Fibre Channel provides faster access to all-flash arrays than Fibre Channel over Ethernet.

FCoE involves linking all-flash arrays to accessing servers via Ethernet instead of a Fibre Channel fabric. Testers from the Evaluator Group, who carried out the study on behalf of Brocade, hooked up blade servers to an all-flash array and compared data access speed, latency and consistency between 16Gbit/s FC and FCoE links.

They found:

  • A single 16Gbit/s FC connection outperformed two 10GBitE connections as measured by application latency
  • FC provided 2x to 10x faster response as workloads surpassed 80 per cent SAN utilisation
  • FC caused 20 - 30 per cent lower CPU utilisation than FCoE
  • AT 50 per cent load FCoE provided 50 per cent or more variance in response time predictability than FC at a 50 per cent load
  • As workload increased FCoE variance increased faster than FC response time variance and grew to 10X that of FC

The setup involved scaling to three NL Video rendering instances at 250MB/sec each, 126 virtual database applications, 126 email instances and 560 virtual desktop users. Blade systems from two vendors were tested.

Russ Fellows, a senior partner at the Evaluator Group, said: "For FCoE, there were 4 bonded, 10 GbitE links between the Cisco UCS chassis and the 6248UP fabric extender. Those links could run multiple protocols, including FCoE. The 6248 then bridged to two 8Gbit/s FC links, which were two 16 Gbit/s FC connections to the 100 per cent solid FC storage."

"For FC, there was one 16Gbit/s FC link between the HP/IBM blade chassis and the Brocade 6510 FC switch. From there, there were two 16Gbit/s FC connections to the 100 per cent solid state FC storage."

Fellows said: ”Our testing found that heavily utilised solid-state storage environments function at their highest levels with Fibre Channel connectivity.”

Brocade’s money was well spent. Get the report here (registration needed). ®

The Power of One eBook: Top reasons to choose HP BladeSystem

More from The Register

next story
Sysadmin Day 2014: Quick, there's still time to get the beers in
He walked over the broken glass, killed the thugs... and er... reconnected the cables*
Auntie remains MYSTIFIED by that weekend BBC iPlayer and website outage
Still doing 'forensics' on the caching layer – Beeb digi wonk
SHOCK and AWS: The fall of Amazon's deflationary cloud
Just as Jeff Bezos did to books and CDs, Amazon's rivals are now doing to it
BlackBerry: Toss the server, mate... BES is in the CLOUD now
BlackBerry Enterprise Services takes aim at SMEs - but there's a catch
The triumph of VVOL: Everyone's jumping into bed with VMware
'Bandwagon'? Yes, we're on it and so what, say big dogs
Carbon tax repeal won't see data centre operators cut prices
Rackspace says electricity isn't a major cost, Equinix promises 'no levy'
prev story

Whitepapers

Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Consolidation: The Foundation for IT Business Transformation
In this whitepaper learn how effective consolidation of IT and business resources can enable multiple, meaningful business benefits.
Application security programs and practises
Follow a few strategies and your organization can gain the full benefits of open source and the cloud without compromising the security of your applications.
How modern custom applications can spur business growth
Learn how to create, deploy and manage custom applications without consuming or expanding the need for scarce, expensive IT resources.
Securing Web Applications Made Simple and Scalable
Learn how automated security testing can provide a simple and scalable way to protect your web applications.