NonStop NS1000 Planning Guide (H06.08+)

Dedicated Service LAN Cables
The Integrity NonStop NS1000 system also uses Category 5, unshielded twisted-pair Ethernet
cables for the internal dedicated service LAN and for connections between the VIO enclosure
and the application LAN equipment.
Cable Length Restrictions
Maximum allowable lengths of cables connecting the modular system components are:
Product IDMaximum LengthConnectorsFiber TypeConnection
M8900nnn
1
125 mLC-LCMMFBlade element to VIO
enclosure
(ServerNet-to-processor
port)
M8900nnn
1
50mLC-LCMMFVIO enclosure to VIO
enclosure (cross-link
connection)
M8900nnn
1
250 mLC-LCMMFVIO enclosure (Fibre
Channel port) to Fibre
Channel disk module
M8900nnn
1
250 mLC-LCMMFVIO enclosure (Fibre
Channel port) to ESS
M8900nnn
1
250 mLC-LCMMFVIO enclosure (Fibre
Channel port) to FC
switch
1
nnn indicates the length of the cable in meters. For example, M8900125 is 125 meters long; M8900-15 is 15 meters
long.
Although a considerable cable length can exist between the modular enclosures in the system,
HP recommends that cable length between each of the enclosures as short as possible.
Internal Cable Product IDs
For product IDs, see “Internal Cables” (page 107).
Blade Element to VIO Enclosure
Fiber-optic cables provide communication between the ServerNet PCI adapter card in each blade
element and the ServerNet-to-processor ports on the VIO enclosure. The Fibre Channel ports
and Ethernet ports on the VIO enclosure then provide Fibre Channel and high-speed Ethernet
links to storage and communication LANs.
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.
Internal ServerNet Interconnect Cabling 79