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## General node 

A general node  ( gNode ) can be considered a vNode and an hNode sharing a physical controller. The current implementation of the TS7700 runs on a gNode. The engine features a vNode and hNode that are combined in an IBM POWER8fi (TS7760) or IBM POWER9 (TS7770) processor-based server. 

Figure 2-2 shows a relationship between nodes. 

<img src='content_image/1012212.jpg'>

## Cluster 

The TS7700 cluster combines a vNode, hNode (or gNode), and an external disk cache system into one operational server. 

Figure 2-3 shows the TS7700 configured as a cluster. 

<img src='content_image/1012213.jpg'>

