you mean master election (which needs to know host object id in the cluster and number of connected datastores and ...) is done by agents themselves ? and it needs no intervention of vCenter ?
Correct - no intervention of vCenter for a master election.
and another thing. when the host with vCenter machine on it and master role fails, how the other agents find that the master is away? is it not the job of vcenter to notice and tell the others when master is not functioning?
Its not vCenter's job - thats the job of the master and the hearbeating process amongst the slaves.
what i doubt is that: if slave hosts loose connectivity with master, they think they are themselves faulty and should introduce themselves as isolated or partitioned and it is the duty of the vcenter to find out when the master is not functioning ! can you please correct me here
See above - its not vCenter's job to determine which node is failed or isolated - thats the job of the FDM agents.
You should read Duncan's book: http://www.amazon.com/dp/B005C1SARM/ref=as_li_tf_til?tag=yellowbricks-20&camp=0&creative=0&linkCode=as1&creativeASIN=B005C1SARM&adid=16Q69JRGDTX1DHPRKTQM
It covers all of this in depth.
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Re: Questions about New HA Features in vsphere 5
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