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C. From single controller to dual controllers
This SOP applies to upgrading from DSN-6110 to DSN-6120 as well as from DSN-6410 to
DSN-6420. Before you do this, please make sure that either DSN-6110 or DSN-6410 is
properly installed according to the manuals, especially the HDD trays. If you are
NOT
using
SAS
hard drives, you need to use HDD trays with either multiplexer board or bridge
board to install your HDDs in order to utilize the dual controller mode features. Otherwise,
the IP SAN system will not be able to recognize the HDDs.
Before you can insert the second controller to the IP SAN storage, the IP SAN storage
system should be up and running and looks like the following screenshot in
“Maintenance\System”. Note that the status is single and you have one controller only.
You can also verify controller mode in “Maintenance\Upgrade”. Check out the “Controller
Mode” section.