preferredAvailabilityZones
A list of PreferredAvailabilityZone
strings that specify which availability zones the replication group's nodes are to be in. The nummber of PreferredAvailabilityZone
values must equal the value of NewReplicaCount
plus 1 to account for the primary node. If this member of ReplicaConfiguration
is omitted, ElastiCache selects the availability zone for each of the replicas.