I have two m1.large RDS instances, a master and a read-replica.
The master is able to keep up with the write load just fine, but occasionally read load on the replica comes to a point where the latency is a little too close for comfort.
Is it possible to have a replica that is larger than the master instance? I haven't see any confirmation if this is possible or if there are any gotchas.
Best Answer
Yep, it is possible with many ways:
Via management console
Via CloudFormation template
Just create new item of type
AWS::RDS::DBInstance
and set parameterSourceDBInstanceIdentifier
to master DBInstance. You can set parameters as you want.