Hi Vincent Walker,
Thank you for posting in Q&A forum.
Microsoft Data Protection Manager (DPM) 2022 uses the Advanced Encryption Standard (AES) for encrypting data on tapes. Specifically, it employs AES-256 bit encryption to ensure data security. This is a robust encryption standard widely used in the industry for securing sensitive information.
Please refer to the official documentation:
Data Protection Manager: https://zcusa.951200.xyz/en-us/system-center/dpm/dpm-overview?view=sc-dpm-2022
Encryption in Azure Backup: https://zcusa.951200.xyz/en-us/azure/backup/backup-encryption
I hope the information above is helpful.
Best Regards,
Yanhong Liu
============================================
If the Answer is helpful, please click "Accept Answer" and upvote it.