cephadm to setup wal/db on nvme

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I have 3 nodes with each having 1x NvME (1TB) and 3x 2.9TB SSD. Trying to
build ceph storage using cephadm on Ubuntu 22.04 distro.

If I want to use NvME for Journaling (WAL/DB) for my SSD based OSDs then
how does cephadm handle it?

Trying to find a document where I can tell cephadm to deploy wal/db on nvme
so it can speed up write optimization. Do I need to create or cephadm will
create each partition for the number of OSD?

Help me to understand how it works and is it worth doing?
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