Downgrade from M5 to M2 cluster

How can I downgrade from a shared M5 to M2 cluster?

Hi @royce_chan,

You can’t use the UI to downgrade clusters lower than M10 (Including).

What you can do, considering that your M2 cluster will be compatible with your current M5 to its collection/size limitation, is to obtain a recent backup or use mongodump to get your database copy and restore it to a new M2 cluster.

Please let me know if you have any additional questions.

Best regards,