SK0-005 Question #377: Real Exam Question with Answer & Explanation

Question

A systems administrator is troubleshooting write speed performance issues on a server. Which of the following actions should the technician take to best resolve the issue?

Options

• AReplace the RAID controller.
• BReplace the RAID controller cable.
• CReplace the RAID cache battery.
• DReplace the RAID cache card.

Explanation

Write speed performance issues on a server, especially with RAID, often indicate a problem with the RAID controller's write cache, which relies on a functional battery for data integrity.

Common mistakes.

• A. Replacing the entire RAID controller might resolve the issue if the controller itself is faulty, but a cache battery issue is a more specific and common cause of write performance degradation, making it a more targeted first step.
• B. A faulty RAID controller cable is more likely to cause disk detection issues or complete array failure rather than a specific degradation in write speed.
• D. While the cache card itself could be faulty, the battery is a more common point of failure for cache-related performance issues, and often the battery is a replaceable component separate from the entire cache card.

Concept tested. RAID write cache battery function

Reference. https://www.dell.com/support/kbdoc/en-us/000130638/perc-controller-cache-policies-and-when-to-use-them

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