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Figure 9–12 shows two AlphaServer systems in a TruCluster Server
configuration with dual-redundant HSZ50 RAID controllers in the middle
of the shared SCSI bus. Note that the SCSI bus adapters are KZPSA-BB
PCI-to-SCSI adapters. They could be KZPBA-CB host bus adapters without
changing any cables.
Figure 9–12: Externally Terminated Shared SCSI Bus with Mid-Bus HSZ50
RAID Array Controllers
KZPSA-BB (ID 7)
Network
Memory
Channel
Interface
Memory Channel
KZPSA-BB (ID 6)
Memory Channel
Member
System
2
Member
System
1
2
1
1
2
T
T
3
4
3
3
4
HSZ50
Controller A Controller B
HSZ50
ZK-1596U-AI
Table 9–3 shows the components used to create the cluster shown in
Figure 9–12 and Figure 9–13.
Figure 9–13 shows two AlphaServer systems in a TruCluster Server
configuration with dual-redundant HSZ50 RAID controllers at the end of
the shared SCSI bus. As with Figure 9–12, the SCSI bus adapters are
KZPSA-BB PCI-to-SCSI adapters. They could be KZPBA-CB host bus
adapters without changing any cables.
9–26 Configurations Using External Termination or Radial Connections to Non-UltraSCSI Devices