IBM 8659-71Y Maintenance Manual - Page 143
SCSI Connectors
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SCSI Connectors Your server comes with a 16-bit UltraSCSI controller on the system board, which provides two independent SCSI channels. This controller has two 68-pin, shielded, high-density connectors: one internal, on the controller, and one external, on the back of the server. You can use these connectors to install an additional internal SCSI device in your server or to attach up to fifteen external SCSI devices to your server. Internal SCSI Connector: A 2-drop, 68-pin (16-bit) cable is installed in your server. One drop is connected to the backplane, the other drop can connect to an additional SCSI removable media device (not a hard disk drive). This cable is connected to the internal connector for the 16-bit UltraSCSI controller. You can use this cable to install an additional internal SCSI device in your server. External SCSI Connector: To attach an external SCSI device to your server, connect an external SCSI cable from the SCSI device to the SCSI connector on the back of the server. Ensure that the last device on the external SCSI cable is terminated. Table 7 shows the pin-number assignments for the 68-pin SCSI connectors. Netfinity 5000 - Type 8659 135
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