Ceph seamlessly runs on heterogeneous commodity hardware. There are possibilities that you can use for your existing hardware systems for Ceph and develop a storage cluster of different hardware types. As a Ceph storage administrator, your use case might require creating multiple Ceph pools on multiple types of drives. The most common use case is to provide a fast storage pool based on SSD disk types where you can get high performance out of your storage cluster. The data, which do not require higher I/O is usually stored on pools backed by slower magnetic drives.

Our next hands-on demonstration will focus on creating two Ceph pools, ssd-pools backed by faster SSD disks, and sata-pools backed by slower SATA disks. To achieve this, we will edit CRUSH maps and do the necessary configurations.

The sandbox Ceph cluster that we deployed in the earlier chapters is hosted on virtual machines and does not have real SSD disks backing it. Hence, we will be considering...