Technical data
Table 3–5: Installing Cables for RA3000 Radial Configuration with a
DWZZH UltraSCSI Hub
Action Refer to:
Install a BN38C HD68 to VHDCI cable between each
KZPBA-CB UltraSCSI host adapter and a DWZZH port.
The DWZZH accepts the VHDCI connector. You may
use a BN38E-0B technology adapter cable with a BN37A
cable instead of the BN38C cable.
ab
Figure 3–9 through
Figure 3–12
Install BN37A cables:
c
—
RA3000 controller shelf with active/passive failover:
Install a BN37A cable between any DWZZH-03 port or
the DWZZH-05 controller port and the RA3000 controller
shelf Host 0 I/O module Host In port.
Figure 3–9
RA3000 pedestal with active/passive failover: Install a
BN37A cable between any DWZZH-03 port or the DWZZH-05
controller port and the RA3000 pedestal Host 0 port.
Figure 3–10
RA3000 pedestal with active/active or active/passive
failover: Install a BN37A cable between the DWZZH-05
controller port and the RA3000 pedestal Host 0 port.
Install a second BN37A cable between a DWZZH-05 host
port and the RA3000 pedestal Host 1 port.
Figure 3–11
RA3000 controller shelf with active/active or
active/passive failover: Install a BN37A cable between
any DWZZH-03 port or the DWZZH-05 controller port
and the RA3000 controller shelf Host 0 I/O module Host
In port. Install a BN37A-0E 50-centimeter (19.7-inch)
cable between the Host 0 I/O module Host Out port and
the Host 1 I/O module Host In port.
Figure 3–12
______________________ 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.
a
The maximum length of the SCSI bus segment, including the combined length of BN38C cables and
internal device length, must not exceed 25 meters (82 feet).
b
The maximum length of the SCSI bus segment, including the combined length of BN38E-0B and BN37A
cables and internal device length, must not exceed 25 meters (82 feet).
c
The maximum length of the SCSI bus segment, including the BN37A cables and internal device length,
must not exceed 25 meters (82 feet).
In the configuration shown in Figure 3–9 through Figure 3–12, it is assumed
that the RA3000 contains two HSZ22 controllers.
3–28 Shared SCSI Bus Requirements and Configurations Using UltraSCSI Hardware