NonStop NS1200 Planning Guide

Processor ID Assignment for the Blade Element
Each blade element contains one processor element. The maintenance entity (ME) firmware
running in the VIO enclosure assigns a number to each processor element based on its connection
from the blade element to the ServerNet-to-processor ports in slots 14.1 through 14.4 (processors
0 through 3) and slots 2.1 through 2.4 (processors 4 through 7). Therefore, fiber-optic cable
connections from the blade elements to the ServerNet-to-processor ports on the VIO enclosure
determine the processor number of each blade element.
Fibre Channel Ports to Fibre Channel Disk Modules
Fibre Channel disk modules (FCDMs) can be connected directly to the Fibre Channel ports on
a VIO enclosure (see “Blade Element to VIO Enclosure” (page 51)) with these exceptions:
• Only configurations with two VIO enclosures are supported.
• Up to four FCDMs (or up to four daisy-chained configurations with each daisy-chain
configuration containing 4 FCDMs) can be connected to the embedded Fibre Channel ports
on a VIO enclosure in the Integrity NonStop NS1200 system.
See “Example Configurations of the VIO Enclosures and FCDMs” (page 55).
Fibre Channel Ports to Tape Devices
Fibre Channel tape devices can be connected directly to the Fibre Channel ports on a VIO
enclosure. With a Fibre Channel tape drive connected to a server, you can use the BACKUP and
RESTORE utilities to save data to and restore data from tape.
VIO Enclosure and Disk Storage Considerations
These considerations apply to an Integrity NonStop NS1200 system:
• Only configurations with two VIO enclosures are supported.
• The group number for the VIO enclosures is 100.
• Up to four FCDMs can be connected to the embedded Fibre Channel ports on a VIO enclosure
in the Integrity NonStop NS1200 system.
• Two or four Fibre Channel connections are split between only two VIO enclosure modules,
so loss of one module takes down all primary or mirror Fibre Channel loops. See
“Recommendations for Fibre Channel Device Configuration” (page 54).
• Two Ethernet connections, one in each VIO enclosure module, that connect to the maintenance
entity are necessary to enable the OSM Service Connection and OSM Notification Director.
Fibre Channel Devices
This subsection describes Fibre Channel devices and covers these topics:
• “Factory-Default Locations for Disk Volumes” (page 53)
• “Configurations for Fibre Channel Devices” (page 54)
• “Configuration Restrictions for Fibre Channel Devices” (page 54)
• “Recommendations for Fibre Channel Device Configuration” (page 54)
• “Example Configurations of the VIO Enclosures and FCDMs” (page 55)
The only Fibre Channel device used internally with the Integrity NonStop NS1200 system is the
Fibre Channel disk module (FCDM). An FCDM and its disk drives are controlled through the
Fibre Channel ports located on the VIO enclosures. For more information on the Fibre Channel
ports, see “Versatile I/O (VIO) Enclosure” (page 17). For more information on the Fibre Channel
disk module (FCDM), see “Fibre Channel Disk Module” (page 18). For examples of cable
connections between Fibre Channel ports on the VIO enclosures and FCDMs, see “Example
Configurations of the VIO Enclosures and FCDMs” (page 55).
This illustration shows the location of Fibre Channel ports on a VIO enclosure:
52 System Configuration Guidelines