Adaptec DURASTOR 6320SS Manual page 125

Figure A-16 and
logical functions when the controllers are operating in a normal
condition and then in a failed condition.
Controller FC Host Ports
HOST I/O
P1
HUB
P2
HUB
P4
P3
Host I/O
Connectors
Figure A-16 Active-Passive Dual-Port, Hubs Enabled, Controller 1 Active
Controller FC Host Ports
HOST I/O
P1
HUB
P2
HUB
P4
P3
Host I/O
Connectors
Figure A-17 Active-Passive Dual-Port, Hubs Enabled, Controller 1 Failed
Figure A-17 illustrate the active-passive mode
RAID Controller
Disk
FC1 Active
CH1
Active
FC2
Disk
CH2
Disk
CH0
Disk
CH3
Controller 1
ACTIVE
RAID Controller
T
Disk
FC1 Passive
CH1
FC2 Passive
Disk
CH2
T
T
Disk
CH0
Disk
CH3
T
Controller 2
PASSIVE
Controller Disk Ports
RAID Controller
Disk
FC1 Inactive
CH1
Inactive
FC2 Disk
CH2
Disk
CH0
Disk
CH3
Controller 1
FAILED
RAID Controller
T
Disk
FC1 Active
CH1
FC2 Active
Disk
CH2
T
T
Disk
CH0
Disk
CH3
T
Controller 2
ACTIVE (FAILED OVER)
Controller Disk Ports
Theory of Controller Operation
Drives 7 - 12
Drives 1 - 6
T= Location of internal termination
Drives 7 - 12
Drives 1 - 6
T= Location of internal termination
Drive I/O Connectors
T
SEP
T
SEP
SAF-TE Disk I/O
T
T
Disk I/O
Drive I/O Connectors
T
SEP
T
SEP
SAF-TE Disk I/O
T
T
SCSI I/O
A-23