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In VMware Cloud Foundation (VCF), SDDC Manager manages password rotation for several critical components to maintain security across the environment:

1. SDDC Manager backup user: SDDC Manager handles password management for internal accounts, including backup users, which are essential for system maintenance and recovery.

2. NSX Manager: SDDC Manager manages password rotation for NSX Manager, ensuring secure network management within the VCF environment.

3. vCenter Server Appliance: Passwords for the vCenter Server Appliance are also managed by SDDC Manager to secure the primary virtualization management interface.

In a VMware Cloud Foundation+ (VCF+) environment, the VMware Cloud Gateway facilitates connectivity between the on-premises VCF infrastructure and VMware Cloud services. Key considerations include:

1. It connects to on-premises SDDC Manager: The Cloud Gateway establishes a connection with SDDC Manager, enabling VCF to leverage cloud-based services and central management.

2. It is deployed in the VCF Management Domain: The Cloud Gateway is typically deployed within the Management Domain, where it can securely integrate with the VCF core management infrastructure.

For a VI Workload Domain that will scale to more than 300 ESXi hosts, the minimum NSX Manager form factor required is Large. The Large form factor provides the necessary resources to handle the increased load, manage network traffic, and support the scalability requirements for environments with a high number of ESXi hosts.

When the SDDC Manager in VMware Cloud Foundation (VCF) is not connected to the internet, administrators have two main options to download install bundles:

1. Using the Bundle Transfer Utility: This utility allows administrators to download bundles on an internet-connected machine and then transfer them to the isolated VCF environment. It’s specifically designed for environments without direct internet access.

2. Using a Proxy in the SDDC Manager: Configuring a proxy in SDDC Manager enables indirect access to download bundles through a controlled connection, such as a secure proxy server, if internet access is permitted only through proxy settings.