HP LH4r HP Netserver LC 2000 Installation Guide - Page 51
Cabling Configurations
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Chapter 4 Installing Mass Storage Devices Cabling Configurations There are various SCSI cable configurations associated with the HP NetServer and if all possible SCSI devices and connections are used, then an additional SCSI disk controller is required. Table 4-1 describes the various cables and where each one can be connected. The example configurations shown in Figures 4-6 and 4-7 assume the maximum number of SCSI devices and connections. l Do not connect the SCSI terminated cable (# 3) to the Hot Swap Mass Storage Cage's connector A or B, or unreliable operation will occur. l The Hot Swap Mass Storage Cage can have up to six drives with only one SCSI cable connected. l The Hot Swap Mass Storage Cage can also be split into two equal parts, with up to three drives each (requires duplex board accessory kit), and uses two independent SCSI busses, which require two SCSI cables. If the duplex board is installed, the two embedded SCSI controllers, a dual channel SCSI disk controller board, or a DAC board must be used to control the two halves of the Hot Swap Mass Storage Cage. Table 4-1. Internal Cable Designations Cable Designation Description Source Cable 1 Cable 2 Cable 3 Cable 4 Cable 5 This cable always connects to the Flexible disk drive in the system. This cable always connects to the Mass Storage Cage and has no termination. This cable always connects to the non-hot swap SCSI drives and has a termination at the end. This cable always connects to the IDE devices (CD-ROM) in the HP NetServer. This sheathed ribbon cable (optional) is always used for the external connector. This cable can only connect to the floppy connector on the system board. This cable is typically connected to the embedded SCSI A channel, a SCSI disk controller board, or a HP NetRAID (DAC) board. This cable can be connected to the embedded SCSI A or B channel, but is typically connected to SCSI Channel B. This cable can only connect to the embedded IDE connector on the system board. This cable can be connected to an embedded SCSI channel or a SCSI disk controller board. 43