HP LH4r HP NetRAID-4M Installation Guide - Page 22
Connecting External SCSI Devices, Installation Hints
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Hewlett-Packard NetRAID-4M Controller Installation Guide 3 Attach one end of the 68-pin internal ribbon cable to the internal connector (Channel 0 or 1) on the HP NetRAID-4M, as shown in Figure 2-5. Figure 2-5. Attaching a 68-pin Internal Ribbon Cable 4 Attach the remaining connectors on the ribbon cable to your remaining internal devices. Note: To connect an 8-bit internal SCSI device, you must obtain a 68-pin-to-50-pin converter for the device. Install the converter between the connector on the cable and the connector on the device. Do not mix 8-bit (Narrow) and 16-bit (Wide) devices on a channel. 5 Connect a DC power cable (from your computer's power supply) to the power input connector on each SCSI device. Connecting External SCSI Devices For each external SCSI device, you must obtain a high-quality external cable with a single-ended impedance range of 80-110 ohms. One of these cables must have a very high-density 68-pin connector on one end so that you can connect the cable to the HP NetRAID-4M. Each cable must be at least 30 cm (11.8 in.) long. For additional information on cabling SCSI devices, see Installation Hints for Connecting SCSI Devices on page 2-13. 2-8