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3-49
Installing the DuraStor Storage Subsystem
Hubs Disabled
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 disabled.
In
Figure 3-44
, two hosts are connected via two independent
switches. Using external switches supports higher bandwidth,
since the host ports are not required to share bandwidth on a loop.
Figure 3-44 Active-Active Dual-Port Hubs Disabled
Host 2
FC HBA
FC HBA
Host 1
Switch 1
Switch 2
FC HBA
FC HBA
Sees LUN 1 &
LUN 2
Sees LUN 1 &
LUN 2
Sees LUN 1 &
LUN 2
Sees LUN 1 &
LUN 2
Up to 12 Disk Drives
Up to 12 Disk Drives
Up to 12 Disk Drives
Up to 12 Disk Drives
P2
FC2
FC1
FC2
FC1
Controller 2
DuraStor FC RAID Appliance
Controller 1
CH0
CH0
CH1
CH1
CH2
CH2
CH3
CH3
CH0
CH1
CH2
CH3
P1
P3
P4
LUN 2
LUN 2
LUN 1
LUN 1
T
T
T
T
DuraStor IUG.book Page 49 Wednesday, January 30, 2002 10:49 AM