8464ch02_Architecture.fm General node Draft Document for Review February 7, 2020 3:15 pm 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. 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. Figure 2-3 TS7700 cluster Figure 2-2 Node architecture Controller vNode vNode Controller hNode hNode Controller hNode gNode vNode Cache Controller TS7700 Cluster Controller hNode vNode Cache Expansion Cluster 16  IBM TS7700 Release 5.0 Guide