Vault raft backup from non-leader node

Hi all, I am using vault version 1.12.6 and we are facing performance issues while taking backups, the leader node was unable to serve the online traffic. Backup file size is 650 MB and the instance type is AWS t3.large. As a work around, can i use a non-leader node to take backup, is it supported?

Algorithmically, I see no reason why it couldn’t be supported - but the Vault code is not implemented to allow that.