Storage modelEdit online Internal disks (FPO)Similar to Hadoop HDFS, IBM Storage® Scale FPO takes the sharing nothing framework. Every server in the cluster is a computing node and a storage node. IBM Storage® Scale manages the local disks from each server and unifies them as one distributed file system for applications running over these nodes.IBM Storage Scale System or shared storageFor Hadoop over shared storage (such as SAN storage), use the deployment in Figure 1.Storage model considerationThis topic lists the advantages and disadvantages of different storage models.Parent topic: Hadoop performance planning over IBM Storage Scale