What is the purpose of the Identity disk in MCS deployments?

• A. Stores OS resources
• B. Stores per-VM configuration and changes
• C. Stores network credentials
• D. Stores user data

Answer: (B)

In MCS deployments, machines are created from a shared master image and can be re-imaged while still needing to keep each desktop’s unique identity. The Identity Disk provides a separate volume for storing that machine-specific identity and persistent configuration. It holds per-VM settings that must endure across sessions or re-provisioning—things like computer name, SID-related information, domain membership state, and other configuration changes tied to the individual VM. This keeps each desktop uniquely identifiable in the environment even when the OS disk is reset or replaced.

This is distinct from storing OS resources (which live on the OS disk) or user data (which is typically handled by profile mechanisms). It’s also not about saving credentials for networks; those are managed by Windows authentication and credential storage, not the identity disk.