Connecting Scsi Devices - HP D7171A - NetServer - LPr Installation Manual

Hewlett-Packard NetRAID-4M Controller Installation Guide
Channels 0 and 1, connect the cable to pins 3 and 4 of the LED
connector on the HP NetRAID-4M. To show activity on Channels 2
and 3, connect the cable to pins 1 and 2. Pins 1 and 4 are ground
pins.
Note:
If you are using non-SCSI disk drives (for example,
IDE), the LED will no longer indicate activity on these
drives when you connect the LED cable to the HP NetRAID-
4M.
Figure 2-4. Connecting the LED Activity Indicator

Connecting SCSI Devices

You can connect internal or external SCSI devices, or a combination
of internal and external SCSI devices to each channel (Channels 0, 1, 2,
and 3) of the HP NetRAID-4M controller.
Each channel supports up to 15 SCSI devices, either Ultra 3 devices
alone or a combination with Ultra2 SCSI, Ultra2, Ultra, and Fast
devices. We recommend keeping Ultra 3 devices on separate
channels from non-Ultra 3 devices. Peak transfer rates on Ultra 3
2-6
2-pin
LED
Cable
Shows Combined
Activity on Channels
0 and 1 only
2-pin
LED
Cable
Shows Combined
Activity on Channels
2 and 3 only