This is for 2025 or later units with a "+" at the end of the model number. (The plus models are recommended for Channels DVR.) With unapproved drives, the "NAS devices could fail to create storage pools and lose volume-wide deduplication and lifespan analysis."
No list of approved third-party drives seems to be available yet. Seagate is reportedly one of the OEMs for Synology-branded drives, and I use their IronWolf drives so may be OK if I need a new Synology NAS.
This could be yet another reason to move on from Synology. As Channels DVR has developed, these products have become unable to support browser (web UI) and remote streaming.

