Troubleshooting RAID Controller Issues
Question
A technician correctly powers off and replaces a cache battery on a RAID controller.
When the server is powered back up, it restarts but indicates there are no logical disk volumes found.
The server halts.
Which of the following components should the technician check FIRST?
Answers
Explanations
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In this scenario, the technician has correctly powered off and replaced the cache battery on a RAID controller. However, upon powering the server back up, it indicates that there are no logical disk volumes found, and the server halts. In this case, the technician should first check the BIOS boot order.
The BIOS boot order determines the order in which the system checks for bootable devices when the system is powered on. If the BIOS boot order is not correctly configured, the system may not be able to locate the logical disk volumes, resulting in the issue described in the scenario.
After replacing the cache battery, the RAID controller may have reset to its default settings, which may not include the bootable device in the list of logical disk volumes. The technician should access the BIOS settings and check the boot order to ensure that the logical disk volume is listed as a bootable device.
If the BIOS boot order is correctly configured and the issue persists, the technician should then check the controller cabling and disk backplane. The controller cabling connects the RAID controller to the disk backplane, and if there is a loose or faulty connection, the controller may not be able to communicate with the logical disk volumes. The disk backplane holds the physical disks, and a faulty disk backplane may prevent the controller from accessing the logical disk volumes.
In summary, the technician should check the BIOS boot order first, followed by the controller cabling and disk backplane, to identify and resolve the issue of no logical disk volumes found.
