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An OS Cannot Be Installed Due to the Faulty Hard Disk Backplane

Publication Date:  2015-06-18 Views:  44 Downloads:  0
Issue Description
Hardware configuration:
An RH2285 V2 configured with an LSISAS2308 controller card

Symptom:

Errors are repeatedly reported during operating system (OS) installation, as shown in Figure 1.

Figure 1 Errors reported during OS installation



Enter the configuration screen for the LSISAS2308 controller card and find that the hard disk status is incorrect, as shown in Figure 2.

Figure 2 Inc RAID hard disk status

Handling Process
1.  Check the error code of the LSISAS2308 controller card and find that the controller reads data from a hard disk. The connection to the hard disk times out. Problem may occur in the controller - SAS cable - backplane - hard disk link, as shown in Figure 3 and Figure 4.

Figure 3 Error Code



Figure 4 Timeout



2.  Keep only one hard disk for installing the OS. The problem persists.

3.  Replace the RAID controller card with a new one. The problem persists.

4.  Connect only one SAS cable to the hard disk backplane. Errors are reported when the SAS cable is connected to ports 0 to 3 on the hard disk backplane. Replace the SAS cable. Errors are reported when a new SAS cable is connected to ports 0 to 3 on the hard disk backplane. Therefore, the hard disk backplane is faulty.

5.  Replace the hard disk backplane. The problem is solved.
Root Cause
The hard disk backplane is faulty. As a result, the OS cannot be installed.

Solution
Replace the hard disk backplane.

Suggestions
This problem is related with the entire storage link. Analyze the SAS error code first. If the fault cannot be located on a component, locate the fault in components one by one in the controller - SAS cable - backplane - hard disk link.

END