HP LH4r HP Netserver LPr Rack Cabling Guide - Page 58
Placement Considerations Due to Data Cable Lengths
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Chapter 3 Cabling Reference Information This is a summary of key cabling guidelines. For complete details, see the HP rack configuration tools located on the worldwide web. Key guidelines help you ensure that: • component placement from rack to rack is consistent • the cables supplied with components will reach between them as intended • there is provision for a "cable management loop" so that the HP NetServer can be extended for service by trained personnel • cables are neat, and routed in a workable manner in cases where supplied cables are not long enough for a cable management loop (which may include those supplied with the video monitor and the UPS) • power supplies and distribution units supplied with the rack assembly are correctly installed to meet requirements for power, current, and number of receptacles Placement Considerations Due to Data Cable Lengths • Data cable lengths limit how far components can be located away from one another. Components can be slightly nearer to or further from the server. This depends upon whether the cables are routed to the left or to the right side of the rack after being connected with the server. And this in turn depends on Cable Guide placement. • Cable Guide placement is determined in turn by where the doors are hinged. Doors can be mounted to swing from either side of the rack. Locate the Cable Guide on the same side of the rack as the door hinge hardware. Locate the PDU opposite the cable guide (if mounted vertically), on the same side as the door latch hardware. If mounted horizontally, PDU location does not make a significant difference to cable routing. • All data connections to devices (except the monitor) are made to the server using 98 inch (2.5 meter) cables. • The monitor is connected to the video port of the server (or alternately to the HP Console Switch) with a 72 inch (1.8 m) cable. • The mounting distances provided in rack layouts assume cables between the servers and connected devices provide for cable management loop (for the LXr 8000). 54