Need for separate instance on RAC database 11g

Hi Experts,
Currently we have a RAC 11g database with two instances. Our business is requesting to create one more instance with an user to store historical data. They claim that they need this separate Instance for the following reasons
1)     Easy backup and recovery for a specific instance in case of historical data
2)     Point-in-time recovery is possible
3)     If any other node fails, then it won’t affect this instance
Please share your expertise on this regard. Thanks in advance.
Regards,
Richard

user12075620 wrote:
1)     Easy backup and recovery for a specific instance in case of historical dataWhat data will that be? If this is a 3rd RAC instance, then it will not make backup easier as the data is in the database (on shared storage media) and that needs to be backed up - the database's data does not reside locally on the instance.
2)     Point-in-time recovery is possibleAgain, I do not see how this is a specific advantage that now suddenly occurs with the introduction of a 3rd RAC instance.
3)     If any other node fails, then it won’t affect this instance Correct - a 3rd instance increases the redundancy in the cluster. It also scales it and provides additional processing capacity.

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user12075620 wrote:
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Message was edited by:
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g777 wrote:
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Max wrote:
Version: 10.2.0.4, 11.2.0.2
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Need for separate instance on RAC database 11g

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