The symptom here is that the Vcenter Server Database grows really fast. This is linked with Netvault Vmware plugin backup.
When the Vmware plugin is forced to use the SAN based transport mode and no secondary transport mode is set, the VDDK will keep retrying the backup if the SAN transport does not work. When it retries, it has to re-authenticate. The result is a loop of logged out, logged in sessions of the user specified in the plugin. These events are then reported and flooded in the vcenter which stores them in its database.
Found out why the SAN transport mode is not working. Trace the event and check the trace file as well as the VDDK log. Check the Netvault Vmware plugin and the Vmware SAN configuration documents for pre-requisites and supported configuration – specifically for virtual machines using RDM.
If SAN is not configured properly then use temporarily another transport mode (network) as the secondary – at least until you fix the SAN configuration issue.
