I was wondering if it's actually possible to have Jumbo Fibre Channel Frames running on a UCS? I've read these two articles which provide some excellent information on implementing Jumbo Frames and Fibre Channel Jumbo Frames: http://datacenteroverlords.com/2013/04/01/jumbo-fc-frames/ http://www.ccierants.com/2013/10/ccie-dc-definitive-jumbo-frames.html Everything within the SAN I'm administrating has the ability to set the MTU up to 9036 except for the UCS. For example on the NetApp gear I can set the MTU per interface, on the Cisco MDS I can set the MTU per vsan. However in the UCS manager when I go to QoS System Class, the option to set the MTU for Fibre Channel is greyed out and it doesnt look like there's anyway to override the preset frame size. I can set the MTU of Best Effort however my understanding is Fibre Channel traffic within the UCS will use the Fibre Channel system class. Furthermore I noticed I can set the Maximum Data Field Size on the vHBA's within the UCS manager however my understanding is the maximum this can go up to is 2048.
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