How to enable secondary controller on Equalogic

Question

I have a freshly installed Equalogic 4000 with two controllers. The primary controller in slot 0 works great. The secondary controller in slot 1 does not appear to be active. How do you initialize the second controller? The current status is "seconadary", with good for battery and good for nvram battery. I plugged in an ethernet cable to port 0 but there is no activity.

Also, does anybody know what write-thru mode for the memory cashe does? There are 2 available policies.

Thanks,

Doug

mfkelly_tx · Answer

You don't want to use write-thru unless your backup battery for the cache is dead, otherwise you will degrade performance by waiting on disk/raid  latency for every read/write operation.

Dev Mgr · Answer

The Equallogic design only has 1 active controller at a time. If the active controller were to fail or restart, the other controller becomes the active controller.

At no time will both controllers be active.

dougolive · Answer

That was helpful. Thanks! Doug

EqualLogic

How to enable secondary controller on Equalogic

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