IBM RS/6000 SP Handbook page 349

It is composed of seven Enterprise Servers M/T 7017 and 12 Enterprise Servers
M/T 7026. The CWS is an 7025-F80 RS/6000 system with one 128-port
Asynchronous adapter and a chain of two necessary RANs.
Each 7017 server has two serial line connection and each 7026 server has one
serial connection to the CWS. Each server is connected by the SP administrative
Ethernet LAN to the CWS.
Administrative
ethernet
Figure 10-15 Pure CES system environment
Example 10-4 shows a sample feature codes configuration for the Pure CES
system environment considered.
Example 10-4 Sample configuration for a pure CES system environment
M/T 7017 (Quantity: 7)
Clustered Enterprise Servers
M/T 7017 Supported Models
RAN
RS232
RAN
Clustered Enterprise Servers
M/T 7026 Supported Models
7025-F80 as
CWS
Chapter 10. Clustering configurations
325