NonStop S-Series Planning and Configuration Guide (G06.26+)

System Components
HP NonStop S-Series Planning and Configuration Guide—523303-017
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SEBs and MSEBs
Selecting MSEB PICs
Ports on SEBs and MSEBs
Fabric Connections
For fault tolerance, SEBs and MSEBs are installed in an enclosure in pairs: one SEB
or MSEB provides access to only the X fabric, and one provides access to only the Y
fabric.
ECL The six-connector SEBs use the ECL interface. To connect MSEBs to six-
connector SEBs, select ECL PICs.
Serial copper For new systems or extensive upgrading, select serial-copper PICs and
use the slimmer, more flexible serial-copper cables.
MMF If enclosures are not arranged in conventional rows, select MMF PICs for
distances of 200 meters (650 feet) between processor enclosures and
between processor and I/O enclosures. Separation between enclosures is
limited if you want all enclosures to be connected to the same power grid.
MMF cabling is the preferred method of fiber-optic cabling.
SMF If enclosures are not arranged in conventional rows or if you already have
SMF cabling, select SMF PICs. Select SMF PICs for distances of 200 (650
feet) meters between processor enclosures or 5 km (3.1 mi) between
processor and I/O enclosures. Separation between enclosures is limited if
you want all enclosures to be connected to the same power grid.
NNA The NNA PIC is configured to operate with the HP NonStop ServerNet
Cluster product. The NNA PIC uses the SMF interface.
VST015.vsd
MSEB
ECL
PIC
Serial
Copper
(Fixed)
SEB
ECL
Serial
Copper
PIC
MMF PIC,
SMF PIC,
and NNA PIC