Technical data

Figure 3–9 shows a four-member TruCluster Server configuration and an
RA3000 controller shelf with active/passive failover radially connected to a
DS-DWZZH-05 UltraSCSI hub. Table 3–6 describes the callouts.
Figure 3–9: TruCluster Server Configuration with an RA3000 Controller
Shelf with Active/Passive Failover
Host 0 I/O
Module
Host 1 I/O
Module
Host
In
Host
Out
Host
In
Host
Out
T
T
T
T
TT
1
DS-DWZZH-05
KZPBA-CB
KZPBA-CB
1
1
1
AlphaServer
Member
System 2
KZPBA-CB
T
AlphaServer
Member
System 1
AlphaServer
Member
System 3
T
KZPBA-CB
AlphaServer
Member
System 4
T
T
RAID Array 3000
Controller Shelf
2
ZK-1477U-AI
Cluster Interconnect
Shared SCSI Bus Requirements and Configurations Using UltraSCSI Hardware 3–29