Technical data

10
Configurations Using External
Termination or Radial Connections
to Non-UltraSCSI Devices
This chapter describes the requirements for the shared SCSI bus using:
• Externally terminated TruCluster Server configurations
• Radial configurations with non-UltraSCSI RAID array controllers
In addition to using only the supported hardware, adhering to the
requirements described in this chapter will ensure that your cluster operates
correctly.
This chapter discusses the following topics:
• SCSI bus signal converters (Section 10.1)
• SCSI bus termination in externally terminated TruCluster Server
configurations (Section 10.2)
• Overview of the BA350, BA356, and UltraSCSI BA356 disk storage
shelves (Section 10.3)
• How to configure shared storage for external termination using Y cables
and trilinks (Section 10.4):
– Preparing shared storage for an externally terminated TruCluster
Server configuration (Section 10.4.1)
– Cabling a single storage shelf (Section 10.4.2)
– Connecting multiple storage shelves, for instance a BA350 and a
BA356, two BA356s, or two UltraSCSI BA356s (Section 10.4.3)
– Using the HSZ20, HSZ40, or HSZ50 RAID array controllers
(Section 10.4.4)
– Cabling a RAID Array 3000 (RA3000) with HSZ22 controller using
external termination (Section 10.4.5)
• How to configure shared storage for radial configurations using the
HSZ40 or HSZ50 RAID array controllers (Section 10.5)
Configurations Using External Termination or Radial Connections to
Non-UltraSCSI Devices 10–1