Scsi Cable Connections - HP Surestore Tape Library Model 2/20 User Manual

SCSI Cable Connections

34 Connecting and Powering on the Library
Note Refer to
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
on page 39):
19
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
Use SCSI cables and HVDS differential terminators for high-
Caution
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.
Fibre Channel Cable Connections
Figure 16
on level 1 (drive module 1).
drive module
on page 41 if the
on page 36 through Figure
Chapter 1