User Service Guide, Fifth Edition - HP Integrity rx8640 SEU

Figure 3-17 E-Link Cable Routing (Rear of Cabinets)
• When the SEU is installed in an adjacent rack to the server, adhere to the following guidelines
for installation:
— Two SEUs can be installed in a single rack cabinet.
— The racks must be either 41U or 33U. A 25U rack is not permitted for SEU installation.
— The rack cabinets must be installed with proper anti-tip feet, system interlock rods, and
ballast.
— The two rack cabinets must be secured together with rack tie together kits and the rear
doors of each rack cabinet must be removed.
— The top of the SEU must be at the same level as the top of the host server to enable a
complete SBA cable service loop. This is accomplished by routing the cable out the back
of one rack cabinet into the back of the other rack cabinet so both the host server and
the SEU can be fully extended in the locked position simultaneously.
— The space above and below the SEUs may be used, but care must be taken so equipment
installed in this space does not interfere with the interlock mechanism or SBA cable
routing.
Cabinet Label Placement There are two cabinet labels that need to be attached to the server and
to the SEU if they were not already attached at the factory. The label “Cabinet 8” must be attached
to the SEU and is installed to the left of the PCI slot label. The label “Cabinet 0” must be attached
to the server and is installed to the left of the PCI slot label. See Figure 3-18 for label placement.
56 Installing the Server Expansion Unit