IBM RS/6000 SP Handbook page 38

Thin nodes
The thin nodes occupy half of a drawer (one slot). Up to sixteen of these nodes
can be housed in a tall frame. When installed singly within a drawer, these nodes
must be placed in an odd-numbered node slot. The wide nodes are compatible
with the SP Switch and the SP Switch-8, but they are not compatible with the
High Performance Switch.
The following thin nodes are supported:
375 MHz POWER3 SMP nodes (F/C 2056)
332 MHz SMP nodes (F/C 2050)
The following thin nodes are currently available:
375 MHz POWER3 SMP nodes (F/C 2056)
SP-attached servers and Clustered Enterprise Servers
The SP-attached server is an ^ pSeries or an RS/6000 Enterprise
Server, supported to be configured to operate with an RS/6000 SP system.
The Table 1-1 shows the list with the ^ pSeries and RS/6000 Enterprise
Servers supported as an SP-attached server.
Table 1-1 Servers supported as SP-attached servers
Server name
^ pSeries 680 Model S85
RS/6000 Enterprise Server 7017 Model S80
RS/6000 Enterprise Server 7017 Model S7A
RS/6000 Enterprise Server 7017 Model S70
RS/6000 Enterprise Server 7026 Model M80
^ pSeries 660 Model 6H1
^ pSeries 660 Model 6H0
RS/6000 Enterprise Server 7026 Model H80
Note: Up to 16 of the supported M/T 7017 Models and up to 32 of the
supported M/T 7026 Models, up to 32 mixed servers in total, can be integrated
on an SP system as SP-attached servers.
14 RS/6000 SP and Clustered IBM ^ pSeries Systems Handbook
Machine Type Model
(M/T)
7017 S85
7017 S80
7017 S7A
7017 S70
7026 M80
7026 6H1
7026 6H0
7026 H80
Availability
Yes
Yes
No
No
Yes
Yes
Yes
Yes