When a clustered set of ADCs is created there are now two methods of specifying how a Virtual Service will fail over.
Option
Description
Any Service
When this option is chosen, the failure of any Service within the VIP will cause the entire VIP with its Virtual Services to fail over to the cluster partner.
For example, you may have a VIP 10.0.100.101, with Virtual Services each using port 443, 8080, 4399,2020, etc. Should any of these sub-Services fail, the entire VIP will fail over.
All Services
When this option is chosen, should one or more sub-Services fail, the VIP will remain on the current cluster member. The VIP will only fail over to the cluster partner if all the Services fail.
This is useful when you wish to disable one particular Service, but not wish the VIP to fail over.