computeRedundancy

Specifies whether to create standby instances for the DB shard group. Valid values are the following:

• 0 - Creates a single, primary DB instance for each physical shard. This is the default value, and the only one supported for the preview.

• 1 - Creates a primary DB instance and a standby instance in a different Availability Zone (AZ) for each physical shard.

• 2 - Creates a primary DB instance and two standby instances in different AZs for each physical shard.