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

System Components
HP NonStop S-Series Planning and Configuration Guide—523303-021
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I/O Multifunction (IOMF) CRUs
Ports
•
ServerNet port (on 1952 IOMF CRU)
You connect an I/O enclosure to a processor enclosure by connection a ServerNet
cable between as SEB or MSEB in the processor enclosure and the ServerNet port
on an IOMF CRU in the I/O enclosure.
•
Three configurable ServerNet ports (on 1980 IOMF 2 CRU)
You connect an I/O enclosure to a process or enclosure by connecting a ServerNet
cable between a SEB or MSEB in the processor enclosure and the PIC in
ServerNet port 1 on an IOMF 2 CRU in the I/O enclosure.
ServerNet port 2 and ServerNet port 3 are currently unused.
•
Differential SCSI port
The differential SCSI port is on SCSI bus 3 and can be used to attach a supported
tape drive or an Open SCSI device to the system.
•
Ethernet port
This port is used during online system resizing.
•
AUX port (currently unused)
•
Modem port (not present on 1980 IOMF 2 CRUs) (currently unused)
•
Serial console port (currently unused)
Plug-In Cards (PICs)
For IOMF 2 CRUs, ServerNet port 1 can be configured with one of four models of
PICs:
•
Emitter-coupled logic (ECL) PICs used with the original ServerNet cables
•
Serial-copper PICs used with lighter, more manageable serial-copper cables
•
Multimode fiber-optic (MMF) PICs used to separate enclosures up to 200 meters
feet (656)
•
Single-mode fiber-optic (SMF) PICs used to separate enclosures up to 200 meters
(656 feet). NonStop S76000 and S86000 servers, and later, support a distance of
200 meters between processor enclosures and 5 kilometers between processor
and I/O enclosures