I have noticed that with VSC 4.1, in the vsc.log, the Disk.QFullSampleSize and Disk.QFullThreshold values are ignored for ESXi 5.1 hosts.
Excerpts from vsc.log:
Quietly ignoring Disk.QFullSampleSize value from host because host is version [5.1.0]
Quietly ignoring Disk.QFullThreshold value from host because host is version [5.1.0]
I understand that the original release of ESXi 5.1 did not support globally setting Disk.QFullSampleSize and Disk.QFullThreshold values, but we have installed ESXi510-201212001 which adds back the ability to set these values globally (see http://kb.vmware.com/kb/2035777). It appears that VSC 4.1 assumes that any patch release of ESXi 5.1 does not support these values. Is there a way to override this behavior of VSC 4.1?