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Copyright@2004~2014 Qsan Technology, Inc. All Rights Reserved.
Qsan Document – User Manual
CAUTION:
Before using trunking or LACP, the gigabit switch must support either trunking
or LACP. Otherwise, host cannot connect the link with storage device.
Dual Controllers
The Qsan storage system supports dual controllers of the same type for redundancy. Controller 1
(CTRL 1) is the master controller and controller 2 (CTRL 2) is the slave by default.
CAUTION:
If you try to increase the system memory and running in dual controller
mode, please make sure both controllers have the same DIMM on each
corresponding memory slot. Failing to do so will result in controller
malfunction, which will not be covered by warranty.
Be aware that when the LED of the Controller Health is in RED, please DO
NOT unplug the controller from the system or turn off the power
suddenly. This may cause unrecoverable damage, which will not be
covered by warranty.
Perform I/O
Please refer to the following topology and have all the connections ready. To perform I/O on dual
controllers, server/host should setup MPIO. MPIO policy will keep I/O running and prevent fail
connection with single controller failure. The following example shows the P400Q-Dxxx series.
