Adaptec 412R User Guide - Page 115
A-8, A-9
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Theory of Controller Operation Figure A-8 and Figure A-9 illustrate the active-passive mode logical functions when the controllers are functioning in a normal condition and then in a failed condition. Host System #1 or Host System #2 HBA#2 Host System #1 HBA#1 Termination Termination Termination Termination Termination Figure A-8 Active-Passive, Dual-Port, Controller 1 Active Host System #1 or Host System #2 HBA#2 Host System #1 HBA#1 Termination Termination Termination Termination Termination Figure A-9 Active-Passive, Dual-Port, Controller 1 Failed A-13
![](/manual_guide/products/adaptec-6320ss-user-guide-670ae53/115.png)
A-13
Theory of Controller Operation
Figure A-8
and
Figure A-9
illustrate the active-passive mode
logical functions when the controllers are functioning in a normal
condition and then in a failed condition.
Figure A-8
Active-Passive, Dual-Port, Controller 1 Active
Figure A-9
Active-Passive, Dual-Port, Controller 1 Failed
Host System #1
or Host System #2
HBA#2
Host System #1
HBA#1
Termination
Termination
Termination
Termination
Termination
Host System #1
or Host System #2
HBA#2
Host System #1
HBA#1
Termination
Termination
Termination
Termination
Termination