Andrew, it doesn’t seem like SMH page is accessible on the ESX hosts I tried.
Both port 2301 and 2381 timeout.
The ILO page is reachable.
As for the timing of the events, they don’t seem to follow any type of pattern.
I’m not certain if they’ve been appearing every two weeks.
I don't believe they appear on a consistent basis.
Below is a sampling of all the events I could find in SIM.
Not cleared Major Consolidated Status Collection operational status has transitioned to Error vswfhost22 7/24/16 8:59 PM
Not cleared Major Consolidated Status Collection operational status has transitioned to Error vswfhost33 6/26/16 10:37 AM
Not cleared Major Consolidated Status Collection operational status has transitioned to Error vswfhost13 5/24/16 10:42 AM
Not cleared Major Consolidated Status Collection operational status has transitioned to Error vssjhepic103 5/12/16 9:44 AM
Not cleared Major Consolidated Status Collection operational status has transitioned to Error 10.6.0.40 5/2/16 6:13 PM