HP LH4r HP Netserver LXr 8000 Rack Cabling Guide - Page 29

Chapter 2 Connecting and Routing Cables to the HP NetServer LXr 8000 SCSI Cable Lengths and Distances between the Server and Storage SCSI cables (2.5 meter, 56-inch, and not extendible) limit the distance between a storage unit and its associated server. Guidelines used by rack configuration tools in generating rack layouts take this distance limitation into account. NOTE Be sure to leave sufficient data cable length to allow for a cable management loop. See the section of this chapter "Cable Routing: Creating the Cable Management Loop" and refer to Figure 2-11. Attach Data Cables to Other Components 1. Using the colored cable ties and labels attached to each data cable previously, connect each cable is to its component. 2. Fasten cable connectors to each component using captive screws. Attach Power Cables When all components have been mounted in the rack and their data cables connected the power cables can be attached. Attaching Server and Component Power Cables 1. Make sure all device switches are in the "off" position. "Off" is indicated by a circle, "on" is indicated by a straight line. 2. Attach the power cords for each device. The section of this chapter titled "Power Cabling" summarizes information for each power rating (voltage). ◊ Plug power cords into the receptacle in the server ◊ Ensure sufficient cable to fully extend the server (See "Cable Routing: Creating the Cable Management Loop" later in this chapter) ◊ Route the cables through the Cable Guide. See Figure 2-12. ◊ Form bundles of cables and tie them using hook-and-loop cable straps. 3. Plug components into the PDU beginning with the components which are lowest in the rack. If you are using more than one PDU or have a heavily loaded rack, see the section titled "Determining and Balancing Current Draw on Two Circuits in One Rack." 25