Dell Telecom Infrastructure Automation Suite introductionDell Telecom Infrastructure Automation Suite (Automation Suite) provides the infrastructure management and orchestration capabilities that disaggregated telecom networks require. Dell Telecom Infrastructure Automation Suite architectureDell Telecom Infrastructure Automation Suite has a distributed architecture that can manage the life cycle of large numbers of geographically distributed servers. Dell Telecom Infrastructure Automation Suite HA architecture Dell Telecom Infrastructure Automation Suite servicesDell Telecom Infrastructure Automation Suite consists of core services, bare metal provisioning services, and bare metal site services. Access and accountsFor the initial Dell Telecom Infrastructure Automation Suite installation and cluster configuration, you must have a common Linux user account. We recommend creating an account called installer on all VMs that host the Dell Telecom Infrastructure Automation Suite nodes in the cluster. However, you can use any user-defined account that meets the requirements. The Dell Telecom Infrastructure Automation Suite installation procedure includes the required step to update the dtias_config.yaml file with an Ansible user account. VM access for cloud installation The VMs where you are installing the Dell Telecom Infrastructure Automation Suite cloud require Admin access. Migrating Dell Telecom Infrastructure Automation Suite Scaling guidelinesDell Telecom Infrastructure Automation Suite (Automation Suite) 2.0 targets an onboarding limit of over 75,000 servers. The maximum number of servers tested on Automation Suite 2.0.1 is 8,500. The Automation Suite 2.0 Telemetry application has been tested to subscribe to metrics data from a maximum of 1,000 Dell PowerEdge servers.