HP 20-Feb manual Scsi Cable Connections, Refer to Fibre Channel Cable Connections on page 41 if

SCSI Cable Connections

Note	Refer to Fibre Channel Cable Connections on page 41 if the
	library is configured with Fibre Channel.

This section illustrates a standard SCSI configuration that produces a high level of data storage performance (one SCSI host bus adapter card for each drive in the library with the library controller daisy-chained to the first drive). HP supports up to two drives per SCSI host bus adapter, but recommends only one drive per bus. If compression is used when attaching two drives per bus, keep in mind the combined transfer rate of the drives and the overhead of the bus must not exceed the throughput of the host bus adapter used.

Note	Dual port cards are available and will reduce slot usage in the
	host system.

Connect the library as follows (refer to Figure 16 on page 36 through Figure

19 on page 39):

1.Properly power off all peripheral devices connected to the host computer.

2.Power off the host. If the host is connected to a network, check with the system administrator before turning off power.

3.Connect a 68-pin jumper cable from the top connector of the library controller to the left drive module on level 1 (drive module 1).

Caution Use SCSI cables and HVDS differential terminators for high- voltage SCSI interfaces. Use SCSI cables and LVDS differential terminators for low-voltage SCSI interfaces. The label on the library controller indicates high or low voltage.

4.Connect the appropriate 68-pin SCSI terminator to the bottom connector on the library’s controller card.

5.Connect a 68-pin SCSI cable from a host SCSI card to each drive module. Add the appropriate terminators to the remaining SCSI connectors.

34 Connecting and Powering on the Library Chapter 1