A RAID array isn't booting and a drive is replaced but remains unavailable. What is MOST likely the issue?

A RAID array isn't booting and a drive is replaced but remains unavailable. What is MOST likely the issue?

• A. The RAID configuration is incorrect
• B. The controller is misconfigured
• C. The backplane has failed
• D. The drives are incompatible

Answer: (C)

In scenarios where a RAID array is not booting and a replaced drive remains unavailable, one of the most common issues is a failure in the backplane. The backplane is the circuit board that connects multiple drives to the RAID controller. If the backplane has failed, it may prevent the new drive from being recognized or from communicating properly with the RAID controller. This failure can manifest as the system not detecting the new drive, leading to a situation where the RAID array is unable to function and boot correctly. While issues like incorrect RAID configuration, misconfigured controllers, or incompatible drives can certainly cause problems, a faulty backplane directly interrupts the physical connection and communication necessary for the drives to operate in an array. Therefore, it's critical to assess the backplane's functionality when diagnosing RAID array issues, especially when drive replacements do not resolve the problem.

In scenarios where a RAID array is not booting and a replaced drive remains unavailable, one of the most common issues is a failure in the backplane. The backplane is the circuit board that connects multiple drives to the RAID controller. If the backplane has failed, it may prevent the new drive from being recognized or from communicating properly with the RAID controller. This failure can manifest as the system not detecting the new drive, leading to a situation where the RAID array is unable to function and boot correctly.

While issues like incorrect RAID configuration, misconfigured controllers, or incompatible drives can certainly cause problems, a faulty backplane directly interrupts the physical connection and communication necessary for the drives to operate in an array. Therefore, it's critical to assess the backplane's functionality when diagnosing RAID array issues, especially when drive replacements do not resolve the problem.