Hi,
Thanks for posting on our forum!
Firstly, best practices on setting up DPM 2019 depend on which kind of environment your DPM server are in and how do you want to deploy your DPM server. If you think more disk space is used in your configuration, then just clear up some checkpoints that you do not need, or lower down the backup frequency as you said. Here is an article for you to better understand the environments for DPM server:
https://learn.microsoft.com/en-us/system-center/dpm/prepare-environment-for-dpm?view=sc-dpm-2019#storage-recommendations-for-dpm
You can also gain more information about backup of DPM:
https://learn.microsoft.com/en-us/system-center/dpm/back-up-the-dpm-server?view=sc-dpm-2019
Finally, you can discuss your question in our DPM community:
https://techcommunity.microsoft.com/t5/system-center/bd-p/SystemCenter
Thanks for your support! Besides, would you please help me Accept Answer. An accepted blog can be put on top of our forum, so that people who have a similar issue can get access to their solution more quickly. I would really appreciate it if you could support my work.
BR,
Joan
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