Adaptec 412R User Guide - Page 137
Active-Active Single-Port Mode for SAN, Hubs Disabled (Single-Port Hosts and One Switch
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Page 137 highlights
SAN Solution Strategies (DuraStor 7320SS only) Active-Active Single-Port Mode for SAN In some scenarios, where the host has a single FC port and the SAN is not truly fault-tolerant, it may be desirable to configure the controllers in active-active single-port mode. Hubs Disabled (Single-Port Hosts and One Switch) Figure B-5 shows two single ported hosts connected to the two controllers via a single switch. CH 1 CH 2 CH 0 CH 3 Disk I/O Connectors T SEP T SEP SAF-TE Disk I/O T T I/O Card Drives 7 - 12 Drives 1 - 6 T= Location of internal termination T Disk CH2 T Disk T CH0 Disk T CH1 CH3 Controller 2 Disk FC2 LUN 2 Passive FC1 LUN 2 Active RAID Controller Disk CH3 Controller 1 Disk CH0 CH2 Disk CH1 Disk Passive RAID Controller FC2 LUN 1 Active FC1 LUN 1 HOST I/O P1 P2 P3 P4 Connectors Host I/O Switch Host Link 2 Host Link 1 FC HBA Host 2 Host 1 FC HBA Figure B-5 Two Hosts, Two Controllers, One Switch B-7
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