Usually, Datacoral is responsible for creating the VPC in which all its resources get created, ensuring network isolation for Datacoral resources.
In certain cases, the customer would prefer to use an existing VPC. Additionally, when there is an existing Redshift cluster that the customer would like to use as their data warehouse, Datacoral requires the customer to provide details about a VPC in which to spin up resources. If a new VPC is being created by the customer, please review the VPC Creation CloudFormation template that we recommend. See here for full instructions on creating a VPC for Datacoral (with all the configurations needed for a successful installation).
If the Redshift cluster and Datacoral installation are in separate VPCs, ensure that they have non-overlapping CIDR blocks and make sure to set up VPC peering between the VPCs.
Information for existing VPC required during installation is in the screenshot below.