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

System Components
HP NonStop S-Series Planning and Configuration Guide—523303-021
4-45
Configurations of Memory Units
Multifunction I/O Board (MFIOB)
The multifunction I/O board (MFIOB) is a ServerNet adapter integrated into PMF CRUs
and IOMF CRUs that contains:
Multifunction I/O Board 2 (MFIOB 2)
The MFIOB 2 implements the MFIOB functions for ServerNet Router 2.
Two SCSI ServerNet
addressable controllers
(SACs)
These SACs control SCSI buses 1 and 2 and the disk
drives on the appearance side of the system enclosure.
One differential SCSI
SAC
This SAC is connected to the differential SCSI port on
the PMF CRU or IOMF CRU and controls SCSI bus 3.
One Ethernet SAC This SAC is connected to the Ethernet port on the PMF
CRU or IOMF CRU (used in group 01 for OSM or TSM
operations).
One service processor
(SP)
The SP is a processor with its own operating system that
runs independently of the rest of the system to provide
part of the system’s diagnostic and maintenance
functions. For more information, see Service Processor
(SP) on page 4-46.
One ServerNet Router 1
or Router 2
This router maintains ServerNet links to various
components. For:
•
PMF CRUs, see ServerNet Router 1 on page 4-47
•
IOMF CRUs, see ServerNet Router 1 on page 4-57
•
PMF CRUs, see ServerNet Router 2 on page 4-48
•
IOMF CRUs, see ServerNet Router 2 on page 4-57
Serial maintenance bus
(SMB) connections
The SMB connects components within a processor
enclosure to the SPs.