Technical data

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3. If necessary, power on the MSA as instructed in Connecting the Power and Applying power to

the MSA.

NOTE:

Each time a system with two controllers is powered on or restarted, or if a second controller is

hot-plugged into a single-controller conﬁguration, the ﬁrmware versions on the controllers are compared.

If the ﬁrmware versions on the two controllers are not the same, the controller LCD panel prompts to clone

the ﬁrmware from the controller with the latest version onto the other controller. For information, see

Cloning controller ﬁrmware.

Verifying proper operation

After replacing the array controller, controller cache module, or cache module battery pack, verify that:

• The controller Heartbeat LED is blinking.

• The controller Fault LED is off.

• No new error messages are displayed on the array controller LCD display panel.

After installing a new array controller, verify that the latest available ﬁrmware is installed. See Array

controller ﬁrmware for the following instructions:

• Determining the currently-installed ﬁrmware version

• Updating controller ﬁrmware

• Cloning controller ﬁrmware

• Recovering corrupted ﬁrmware

Customer replaceable components