Maintaining and Managing Storage Configurations : Upgrading the Firmware

Upgrading the Firmware
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 the Write through mode, the controller sends a data transfer completion signal to the host when the disk subsystem has received all 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 controller firmware:
1.
2.
On the main menu screen, select Go To>>Controller>>Update Controller Firmware.
3.
Click Browse for the .rom flash update file, as shown in the following figure.
Figure 77 Locate the Controller Firmware File
 
4.
The MegaRAID Storage Manager software displays the version of the existing firmware and the version of the new firmware file. The MegaRAID Storage Manager software does not allow you to overwrite a newer version of the firmware with an older version.
5.
The controller is updated with the new firmware code contained in the .rom file.
6.