Adaptec 412R User Guide - Page 133
Hubs Enabled, In s
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SAN Solution Strategies (DuraStor 7320SS only) Hubs Enabled In Figures B-1 and B-2, the controllers are configured in an activeactive dual-port mode with the internal hubs enabled. Two hosts are connected via two independent loops using the enclosure's built-in hub bypass circuits. These circuits provide two internal hubs, eliminating the need for the use of external FC hardware, other than the cables. CH 1 CH 2 CH 0 CH 3 Disk I/O Connectors T SEP T SEP SAF-TE Disk I/O Card T T I/O Card T= Location of internal termination Drives 7 - 12 Drives 1 - 6 T Disk CH2 T Disk T CH0 Disk T CH1 CH3 Controller 2 Disk FC2 LUN 2 Active FC1 LUN 2 Active RAID Controller Disk CH3 Controller 1 Disk CH0 Disk CH2 CH1 Disk FC2 LUN 1 Active Active FC1 LUN 1 RAID Controller HUB HUB HOST I/O P1 P2 See's LUN 1 & LUN 2 Host I/O Connectors Host 2 P4 FC HBA P3 See's LUN 1 & LUN 2 FC HBA See's LUN 1 & LUN 2 See's LUN 1 & LUN 2 FC HBA Host 1 FC HBA Figure B-1 Two Hosts and Two Independent Loops B-3