Which option describes the difference between “high-performance” and “none” on a VM-FEX port
profile?
A.
None is software assisted, and high-performance is software and hardware assisted.
B.
None indicates that VM-FEX is not used on this interface, and high-performance indicates that is
used.
C.
None is used for management profiles, and high-performance is used for mission-critical data
profiles.
D.
None assumes default scheduling settings for the port profile, and high-performance gives the
ports priority in scheduling.
http://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/sw/vm_fex/vmware/cli/config_guide/b_CLI_VMware_VM-FEX_UCSM_Configuration_Guide/b_CLI_VMware_VM-FEX_UCSM_Configuration_Guide_chapter_01.html
“In standard mode, traffic to and from a virtual machine passes through the distributed virtual switch (DVS) and the hypervisor.”
“In high-performance mode, traffic to and from a virtual machine (VM) bypasses the DVS and hypervisor. Traffic travels directly between VMs and the virtual interface card (VIC) adapter.”
So if anything, it’s the none (standard) mode that is software and hardware assisted. High-performance bypasses the software and works directly with the adapter.
B. Is incorrect because both are VM-FEX port modes.
C. Well, what kind of answer is that? Does it imply someone forces you to use “none” mode only for management? Is that a requirement? You can’t use standard mode for non-I/O intense applications? And “mission critical” data needs redundancy in the first place, and not necessarily an ASIC-level I/O performance.
D. There is no such thing as “scheduling settings for port profile”. At least I could not find anything about neither in the guide nor in google.
So wtf Cisco, which one of that do you expect me to pick?
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