How to disable automatic rescan of HBAs initiated by vCenter

11 07 2011

http://kb.vmware.com/kb/1016873

Posting the link to this KB article mainly as a reminder to myself since this setting gets whacked back to the default after every vCenter Server upgrade.  In larger environments, allowing all of the hosts in a DRS/HA Cluster to initiate automatic rescans after a new datastore has been added can sometimes trigger “rescan storms” – updating the advanced setting config.vpxd.filter.hostRescanFilter to ‘false’ will prevent the automatic rescans, allowing you to do them in a more controlled manner.

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