Technical data

9
Configuring Systems for External
Termination or Radial Connections to
Non-UltraSCSI Devices
This chapter describes how to prepare the systems for a TruCluster Server
cluster when there is a need to access:
• Shared SCSI storage using external termination.
• Non-UltraSCSI RAID array controllers (HSZ40 and HSZ50) using a
radial connection.
This chapter does not provide detailed information about installing devices;
it describes only how to set up the hardware in the context of the TruCluster
Server product. Therefore, you must have the documentation that describes
how to install the individual pieces of hardware. That documentation
typically arrives with the hardware.
All systems in the cluster must be connected via the Memory Channel
cluster interconnect. Not all members must be connected to a shared SCSI
bus. We recommend placing the clusterwide root (/), /usr, and /var file
systems, all member boot disks, and the quorum disk (if provided) on shared
SCSI buses. All configurations covered in this manual assume the use of a
shared SCSI bus.
Before proceeding further, review Section 4.1, Section 4.2, and the first two
paragraphs of Section 4.3.
9.1 TruCluster Server Hardware Installation Using PCI SCSI
Adapters
The following sections describe how to install the KZPSA-BB or KZPBA-CB
host bus adapters and configure them into TruCluster Server clusters using
both methods of termination — the preferred method of radial connection
with internal termination used with the HSZ40 and HSZ50 RAID array
controllers, and the old method of external termination.
The descriptions are based on the assumption that you will configure and
cable your storage subsystems as described in Chapter 10 after installing the
host bus adapters, Memory Channel adapters, and network adapters. When
the system hardware (KZPSA-BB or KZPBA-CB host bus adapters, Memory
Configuring Systems for External Termination or Radial Connections
to Non-UltraSCSI Devices 9–1