NonStop NS-Series Planning Guide (H06.03+)

Modular System Hardware
HP Integrity NonStop NS-Series Planning Guide—529567-004
2-36
IOMF 2 CRU
Each p-switch (for the X or Y ServerNet fabric) has up to six I/O PICs, with one I/O PIC
required for each IOAM enclosure in the system. Each NonStop S-series I/O enclosure
uses one port and one PIC, so a maximum of 24 NonStop S-series I/O enclosures can
be connected to an Integrity NonStop NS-series system, if no IOAME is installed.
IOMF 2 CRU
The Integrity NonStop NS-series system is compatible with most disks and ServerNet
adapters contained in currently installed NonStop S-series I/O enclosures equipped
with IOMF 2 CRUs. I/O multifunction 2 (IOMF 2) CRUs, each equipped with an MMF
PIC, are required for connecting NonStop S-series I/O enclosures to Integrity NonStop
NS-series systems.
To retain disks and adapters currently installed in NonStop S-series system enclosures,
you can convert these enclosures to NonStop S-series I/O enclosure, replacing the two
PMF CRUs in each enclosure with IOMF 2 CRUs. See the conversion instructions on
the CSSI Web. A link to the CSSI Web is in the left navigation area of the NTL home
page. For information on the IOMF 2 CRUs, see the NonStop S-Series Planning and
Configuration Guide.
NonStop S-Series Disks and ServerNet Adapters
Disks and ServerNet adapters (except SEB and MSEB CRUs) installed in NonStop
S-series I/O enclosures equipped with IOMF 2 CRUs, as well as devices that are
downstream of the enclosures are compatible with the Integrity NonStop NS-series
hardware, as long as the NonStop S-series I/O enclosure is properly connected to the
p-switches. For information on the NonStop S-series disks and ServerNet adapters,
see the NonStop S-Series Planning and Configuration Guide.
NonStop S-Series I/O Enclosure Group Numbers
Assignment of the group number of each NonStop S-series I/O enclosure depends on
the cable connection to the p-switch PIC by slot and port. For PIC slot and connector
locations, see Processor Switch Group-Module-Slot Numbering on page 2-32.
The cables from the two IOMF 2 CRUs must connect to PICs residing in the same slot
number in both the X and Y p-switch and to the same port number on each PIC. For
example, the preceding illustration shows the cables from the NonStop S-series IOMF
2 CRUS connected to port 1 of the PICs in slot 4 of the X and Y p-switch, assigning the
group number of 11.
Caution. Do not attempt to use NonStop S-series SEB or MSEB CRUs in NonStop S-series
I/O enclosures connected to Integrity NonStop NS-series systems. System failure will result.