Hi 지영 윤,
Hope you're doing well.
How many affected machines are there currently? Are they physical or virtual machines?
Ensure all disks are connected to your server. If servers are physical machines, open your computer case and verify that the data cable is properly attached to an appropriate port on the motherboard and that the power cable is connected to the power supply.
Below is the relevant doc for your reference:
Storage pool, hard drive is not displayed after deleting volume, - Microsoft Community
Best Regards,
Ian Xue
If the Answer is helpful, please click "Accept Answer" and upvote it.