Template:SetupStep Warning Before Creating OSDs Journals

Note Before Creating OSDs and Ceph Journals

The Object Storage Daemons (OSDs) store data, while the Journals accelerate write performance as all writes flow to the journal and are complete from the client perspective once the journal write is complete. A quick review of OSD and Journal requirements in a QuantaStor/Ceph Scale-out Block and Object configuration:

• Each system should have 5x HDDs (or SSDs) for data devices to satisfy minimum Placement Group redundancy requirements
• Each system should have 1x or more journal devices (NVMe/Optane preferred)