Technical data

Figure 3–11 shows a two-member TruCluster Server configuration and
an RA3000 pedestal with active/active or active/passive failover radially
connected to a DS-DWZZH-05 UltraSCSI hub. This configuration uses
independent connections to the two pedestal host ports to increase the
available bandwidth to the RA3000 controllers. Table 3–6 describes the
callouts.
______________________ Note _______________________
If you connect a DWZZH-05 host port to an RA3000 pedestal
host port to provide active/active failover, you must disable fair
arbitration on the DWZZH-05 by placing the fair arbitration
switch in the DISABLE position.
Figure 3–11: TruCluster Server Configuration with an RA3000 Pedestal
with Active/Active or Active/Passive Failover
T
T
T
TT
1
DS-DWZZH-05
KZPBA-CB
KZPBA-CB
1
T
T T
RAID Array
3000 Pedestal
Host
0
Host
1
2 2
AlphaServer
Member
System 1
AlphaServer
Member
System 2
ZK-1480U-AI
Cluster
Interconnect
Shared SCSI Bus Requirements and Configurations Using UltraSCSI Hardware 3–31