2-23
Setting Up Your Storage Subsystem
Basic Active-Active Single-Port Topology
Choose this topology when your application requires a high-
performance, robust, full system-level fault-tolerant disk storage solution
with transparent controller failover/failback. This dual controller
configuration supports a host with a single-port HBA and is ideal when
the host driver software does not support LUNs that appear twice.
Note:
This configuration is shown with hubs enabled.
Connect the fibre channel data cables as shown in
and
Figure 2-27 Logical Diagram – Single Host, Single HBA, Hubs Enabled
Figure 2-28 Host Cabling Diagram – Single Host, Single HBA, Hubs Enabled
Jumper Cable
Host System #1 HBA #1
Host I/O
Connectors
RAID Controller
SEP
Controller 1
SAF-TE Disk I/O
Disk
CH1
Disk
CH2
Disk
CH0
Disk
CH3
FC2
FC1
P1
P2
CH 1
CH 2
P3
P4
Active
Passive
RAID Controller
Controller 2
Disk
CH1
Disk
CH2
Disk
CH0
Disk
CH3
FC2
FC1
Passive
Active
SEP
I/O Card
CH 0
CH 3
HUB
HUB
Drives 7 - 12
Drives 1 - 6
Termination
Termination
Termination
Termination
Termination
Termination
Host I/O
Fibre Channel Jumper Cable
SAFTE Disk I/O
Chl 1
Ctlr 1
Ctlr 2
SAF-TE
Chl 2
RAID Controller
RAID Controller
Power
Supply
Power
Supply
Cooling
Fans
Host Computer
Host I/O
Chl 0
Chl 3
I/O
P4
P3
P2
P1
FC HBA 1
Fibre Channel Data Cable
Connect to P2
DuraStor IUG - Online.book Page 23 Friday, July 19, 2002 3:06 PM