SK0-005 Question #43: Real Exam Question with Answer & Explanation

Question

An administrator has attached an old SCSI JBOD to a server to recover archival data. However, the array will not mount to the server. Which of the following should the administrator check FIRST?

Options

• ATerminators are installed on the controller card and the array.
• BDisk drivers are not installed on the server.
• CSCSI BIOS needs to be updates.
• DTerminators are installed on each hard drive.

Explanation

When an old SCSI JBOD fails to mount, the administrator should first check if the necessary disk drivers for the SCSI controller are installed on the server.

Common mistakes.

• A. SCSI termination is crucial for proper operation, with terminators needed at both ends of the SCSI bus (the controller and the last device), but typically not on each individual device in a JBOD. While incorrect termination can cause issues, ensuring drivers are present is a more fundamental first step for initial detection.
• C. Updating the SCSI BIOS (firmware) is a less common and more advanced troubleshooting step that would typically come after verifying basic driver functionality and proper termination, especially for an "old" JBOD where the existing BIOS might already be compatible.
• D. Terminators are typically installed at the physical ends of the SCSI chain, not on each individual hard drive within the array, unless a drive itself is the "last" device on a segment. Incorrect termination will definitely cause problems, but the primary check is for OS-level driver support.

Concept tested. SCSI device drivers and mounting

Reference. https://learn.microsoft.com/en-us/windows-hardware/drivers/storage/how-storage-drivers-work

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