...
Fail back to SD PROD if necessary.
WEB into MAINT mode.
SD PROD
Stop DB replication / enable DB write.
...
Deploy config changes to GEO from trunk-HEAD.
Test.
rsynch
SF PROD WEB
Test DB replication with edit/approve.
SD PROD WEB
set mode to MAINT
SF QA
Upgrade WEB as per this page.
...
Deploy config changes to GEO from trunk-HEAD.
Test.