@Anshul_Lokras Could you please give me the steps for in place upgrade from 6.4 to 6.5. Thanks.

@shelly-goel : Thank you very much for the info and the suggestions. Really appreciated.

@shelly-goelThanks for the response. I am not looking for snapshot or storage backup.Our environment is having only one author. so if that author goes down, immediately to switch over to any secondary author( which has same information like mirror of primary author). Usually in databases we have primary and secondary db and if primary db goes down , they can switch to the secondary one. so, looking for that setup to achieve it. Thanks again.