Be careful before upgrading to VMware Vsphere 4.1 if using HP Flex-10

We’ve had two customers impacted by this problem, so please take notice prior to upgrading or installing Vsphere 4.1 with Flex-10.  Read links below for more specifics.

http://communities.vmware.com/message/1589996

 http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c02481155&dimid=1004743424&dicid=alr_sep10&jumpid=em_alerts/us/sep10/all/xbu/emailsubid/mrm/mcc/loc/rbu_category/alerts

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1028091

Cisco UCS vs HP Virtual Connect

Keep in mind this is written by a Cisco employee but it’s a good explanation of some of the differences between Cisco UCS networking and HP Blades Virtual Connect technology.

http://bradhedlund.com/2010/08/16/cisco-ucs-qos-vs-hp-virtual-connect-rate-limiting/

Cisco UCS QoS vs. HP Flex-10 vNICs in VMware

Great article pointing out the VMware networking differences between Flex-10 and UCS QoS.  Of course HP is getting ready to make some more changes to their Flex-10 (Flex Fabric I think it is called) so stay tuned.

http://blog.aarondelp.com/2010/03/cisco-ucs-qos-vs-hp-flex-10-vnics-in.html