Linux OS Ceph Configuration(Minimum) 1） Ceph OSD server: Volume Storage: 1x storage drive per daemon block.db: Optional, Recommended, 1x SSD or NVMe or Optane partition or logical volume per daemon. Sizing is 4% of block.data for BlueStore block.wal：Optional, 1x SSD or NVMe or Optane partition or logical volume per daemon. Use a small size, for example 10 GB, and only if it’s faster than the block.db device.

2） ceph-mon: Monitor Disk: Optionally,1x SSD disk for leveldb monitor data.

3） ceph-mgr: 4) ceph-radosgw 5) ceph-mds： Disk: 2 MB per daemon, plus any space required for logging, which might vary depending on the configured log levels.

Containerized Ceph Configuration（Minimum): 1) Ceph-osd-container：
OSD Storage: 1x storage drive per OSD container. Cannot be shared with OS Disk. block.db：Optional, Recommended, 1x SSD or NVMe or Optane partition or lvm per daemon. Sizing is 4% of block.data for BlueStore block.wal: Optionally, 1x SSD or NVMe or Optane partition or logical volume per daemon. Use a small size, for example 10 GB, and only if it’s faster than the block.db device.

2） Ceph-mon-container: Monitor Disk： Optionally, 1x SSD disk for Monitor rocksdb data

3) Ceph-mgr-container 4）ceph-radosgw-container 5）ceph-mds-container

Ceph Client architect:

Reference: https://software.intel.com/content/www/us/en/develop/articles/using-intel-optane-technology-with-ceph-to-build-high-performance-oltp-solutions.html