NonStop S-Series Planning and Configuration Guide (G06.29+)

System Components
HP NonStop S-Series Planning and Configuration Guide—523303-021
4-47
Configurations of Memory Units
Service Processor Communication
Service processor communication takes place along routes that depend on the
destination of the message:
•
The MSPs communicate with the OSM or TSM Low-Level Link running on the
system console through the Ethernet ports on the PMF CRUs in group 01 and
using the Remote Procedure Call (RPC) protocol.
•
The pair of SPs in one enclosure communicate with each other through the dual-
ported SMB within that enclosure.
•
The SP pairs in a group communicate with SP pairs in other groups and the
operating system through the ServerNet communications network.
ServerNet Router 1
The PMF CRUs that are not PMF 2 CRUs contain one ServerNet router 1, which has
connections to:
•
The processor in the same PMF CRU
•
The processor in the other PMF CRU in this enclosure, through the backplane
•
One of the SEB or adapter slots 51 and 52:
°
The PMF CRU in slot 50 links to slot 51
°
The PMF CRU in slot 55 links to slot 52
•
Both SEB or adapter slots 53 and 54
•
Other internal components including:
°
Two SCSI controllers to the internal disk drive buses
°
One SCSI controller to the differential SCSI port
°
A service processor (SP)
°
The other ports on the PMF CRU faceplate
°
The ServerNet bus interface (SBI) on the MFIOB
°
The SMB, which provides communication between the SP and the other
components within the enclosure