Upgrading Controller Firmware By Using the MegaRAID Storage Manager Software

> Upgrading Controller Firmware By Using the MegaRAID Storage Manager Software

> The MegaRAID Storage Manager software enables you to easily upgrade the controller firmware.

> To avoid data loss because of dirty cache on the controller, the utility forces the virtual disks into Write Through mode after a firmware upgrade. It is in this mode until the server reboots. In Write Through mode, the controller sends a data transfer completion signal to the host when the disk subsystem has received all of the data in a transaction. This way, in case of a power outage, the controller does not discard the dirty cache.

> Follow these steps to upgrade the firmware:

> 1. | In the left panel of the MegaRAID Storage Manager window, click the icon of the controller you want to upgrade.

> 2. | In the MegaRAID Storage Manager window, select Go To > Controller > Update Controller Firmware.

> 3. | Click Browse to locate the .rom update file, as shown in the following figure.

> Figure 93. Update Controller Firmware Dialog

> 4. | After you locate the file, click Ok.

> The MegaRAID Storage Manager software displays the version of the existing firmware and the version of the new firmware file.

> 5. | When you are prompted to indicate whether you want to upgrade firmware, click Yes.

> The controller is updated with the new firmware code contained in the .rom file.

> 6. | Restart the system after the new firmware is flashed.

> New firmware upgrade does not take effect until you restart the system.

DB15-000988-08-December 2013
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