ServerNet Cluster 6770 Hardware Installation and Support Guide

Introduction to the ServerNet Cluster Switch (Model
6770)
ServerNet Cluster 6770 Hardware Installation and Support Guide—522544-002
1-7
EIA Standard Rack-Mount
EIA Standard Rack-Mount
The components of the ServerNet Cluster Switch: ServerNet II Switch, AC transfer
switch, UPS, and a rack-mount kit are shipped separately to be installed at the
customer site in a customer-supplied EIA standard rack.
To use the cage nuts that are included in the rack-mount kit, you must have a rack with
square holes. You can also use the provided M5 screws if you have threaded M5
holes. Otherwise, you will need to purchase additional screws or hardware to fasten
the components to the rack.
ServerNet II Switch
The ServerNet II Switch (Figure 1-6 and Figure 1-7) is a point-to-point networking
device that routes ServerNet packets across an external ServerNet fabric. The
ServerNet II Switch uses the ServerNet router 2, an application-specific integrated
circuit (ASIC) designed by HP, that provides cross-bar wormhole routing of ServerNet
packets between 12 input ports and 12 output ports. The crossbar switch in the ASIC
receives the data packets, checks them for errors, interprets their destination
addresses, and then routes them out of one of the 12 output ports.
The ServerNet II Switch is a Class-3 CRU. A Class-3 CRU can cause a partial or total
system outage if the documented replacement procedure is not followed correctly.
Customers replacing Class-3 CRUs should have either six or more months experience
with replacing NonStop S-series CRUs or equivalent training. Customers must be able
to use the tools needed for the replacement procedure, must protect components from
electrostatic discharge (ESD), and must understand the dependencies involved in
NonStop S-series CRU-replacement procedures. Replacement by a service provider
trained by HP is recommended.
Table 1-2 describes the physical dimensions of the ServerNet II Switch.
Table 1-1. Required Rack-Mount Dimensions
Dimension Inches Millimeters
Depth of rack 24 through 26 610 through 660
Width of rack 19 483
Vertical space 10 1/2 267
Square holes for cage nuts 3/8 9.5
Table 1-2. ServerNet II Switch Physical Dimensions
Dimension Inches Millimeters
Height 3.5 89
Width 16.5 420
Length 25 635