Model 4: Single cluster with limited Hadoop nodes as IBM Spectrum Scale nodes

Use this model if you are using a SAN-based storage.

This is illustrated in the following figure:

In this deployment model, HDFS Transparency services run on IBM Spectrum® Scale NSD servers that have local connection path to SAN storages. All the other Hadoop/Spark services run on the Hadoop nodes and take network RPC to read/write data from or into IBM Spectrum Scale.