Hello,
Thank you for posting in Q&A forum.
According to Microsoft's license agreement, the RDS CAL license is device or user based. Each device or user requires a license to access remote desktop services. Therefore, you need to assign a valid RDS CAL license to each device or user.
For your situation, if you have 200 RDS CALs and want to use them in DC and DR settings, you need to ensure that each device or user has a valid license in the DC and DR environment. This means that you need to assign a license to the devices or users in the DC, and another license to the devices or users in the DR.
I hope this can help you clarify the issue of using RDS CAL licenses. If you have any other questions, please feel free to raise them.
Best regards,
Jill Zhou
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