Understanding Unplanned Failover; Updating The Intel ® Raid High Availability Storage Controller Firmware - Intel RAID High Availability Storage User Manual

Figure 38 Expand Tree
6. Select the node for the planned failover.

Understanding Unplanned Failover

An unplanned failover might occur if the controller in one of the controller nodes fails, or if the cable
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from one controller node to the JBOD is accidentally disconnected. The Intel RAID High Availability
Storage solution is designed to automatically switch to the other controller node when such an event
occurs, without any disruption of access to the data on the drive groups.
When an unplanned failover occurs, you must determine what caused the failover so you can fix the
problem.
NOTE: When the failed controller node returns, the management and I/O paths of the pre-failover
configurations are automatically restored.
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Updating the Intel RAID High Availability Storage Controller
Firmware
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Follow these steps to update the firmware on the Intel RAID High Availability Storage controller board.
You must perform the update only on the controller node that is not currently accessing the drive groups.
1. If necessary, perform a planned failover as described in the previous section to transfer control of the
drive groups to the other controller node.
2. Start the RWC2 utility on the controller node that does not currently own the cluster.
NOTE To determine which node currently owns the cluster in Windows Server 2012, follow the steps
in Section - Planned Failover in Windows Server 2008 R2, up to step 3, where information about the
cluster disks is displayed in the center panel. The current owner of the cluster is listed in the Owner
Node column.
3. In the left panel of the RWC2 window, click the icon of the controller that requires an upgrade.
4. In the RWC2 window, select Go To > Controller > Update Controller Firmware.
5. Click Browse to locate the .rom update file.
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Intel High Availability Storage User Guide 47