Lower latency and higher performing server-to-server data traffic (East-West) have become key discussion points as customers look to modernize their infrastructures. Cisco specifically designed UCS unified fabric for this type of traffic to create a highly-available infrastructure with reduced latency and unmatched consistency as the solution scales. Without providing any supporting data, HP and IBM have been incorrectly asserting that Cisco UCS unified fabric would increase latency and slow blade-to-blade traffic. Cisco ran the tests, and the results were simply amazing.
Full Blog:
http://blogs.cisco.com/datacenter/cisco-ucs-outperforms-hp-and-ibm-blade-servers-on-east-west-latency/
Cisco UCS Outperforms HP Blade Servers on East-West Latency
Cisco UCS Outperforms IBM Flex System Blades on East-West Latency

-Kevin