HP A7143A RAID160 SA Controller Support Guide, February 2007

Installing the RAID160 SA Controller
Connecting the Cables and the StorageWorks‘ Disk Enclosures
Chapter 4
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Connecting the Cables and the StorageWorks™ Disk Enclosures
• Each channel on the RAID160 SA controller supports up to 14 drives
• Ports 1 and 2 each have two SCSI connectors, one for external storage units and one for internal hard
drives in the server
• The internal and external connectors on channel 1 cannot be used simultaneously
• The internal and external connectors on channel 2 cannot be used simultaneously
• Ports 3 and 4 can only be connected to external storage units
NOTE Currently the internal ports on the RAID160 SA controller are not supported.
Peripherals attached to any of the connectors must have a unique SCSI ID value in the range of 0 to 15
(except ID 7, which is reserved for controller use). The SCSI ID value determines the priority given to the
device when it attempts to use the SCSI bus.
The supported HP StorageWorks™ disk enclosures automatically set the SCSI IDs for the physical disks they
contain.
IMPORTANT To preserve an existing configuration when replacing an existing RAID160 SA controller with a
different RAID160 SA controller, be certain to reconnect the SCSI cables to the same channels
on the replacement controller as the channels they had been connected to on the original
controller, (channel 1 to channel 1, channel 2 to channel 2, and so on).
To prevent signal degradation, SCSI buses require termination on both ends. In HP servers and storage
systems, the controller, SCSI cable, and backplane provide the required termination.
Supported StorageWorks™ Disc Enclosures
The RAID160 SA controller supports the following HP StorageWorks™ disc enclosures:
• StorageWorks 43xxT (Tower) Ships with one VHDCI to VHDCI 6-foot cable
• StorageWorks 4314R (Rack) Ships with one VHDCI to VHDCI 12-foot cable
• StorageWorks 4354R (Rack) Ships with two VHDCI to VHDCI 12-foot cables
External Cabling for HP Servers
All HP StorageWorks™ storage enclosure models include external SCSI cables. Check the connector type on
your storage device to identify the cable type needed. See Figure 3-2 and Table 3-1 for details.