Adaptec 1966600 User Guide - Page 81
Hubs Enabled, provide two internal hubs, eliminating the need for the use
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Page 81 highlights
Installing the DuraStor Storage Subsystem Hubs Enabled In the following figures, the DuraStor 7220SS storage subsystem's two controllers are configured in an active-active dual-port mode with the internal hubs enabled. In Figure 3-42, 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 Fibre Channel hardware, other than the cables. DuraStor FC RAID Appliance Host 1 Sees LUN 1 & LUN 2 FC HBA FC HBA Sees LUN 1 & LUN 2 CH0 CH0 FC2 LUN 2 CH1 FC1 LUN 2 CH2 CH1 Controller 2 CH3 Host 2 FC HBA Sees LUN 1 & LUN 2 P2 HUB CH2 P1 HUB CH0 FC1 LUN 1 CH1 P3 FC2 LUN 1 CH2 CH3 P4 Controller 1 CH3 FC HBA Sees LUN 1 & LUN 2 Figure 3-42 Active-Active Dual-Port Hubs Enabled Up to 12 Disk Up to 12 Disk Up to 12 Disk Up to 12 Disk 3-47
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