20+ practice questions focused on Storage and RAID Troubleshooting — one of the most tested topics on the CompTIA A+ Core 1 220-1201 exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Storage and RAID Troubleshooting PracticeA technician is building a workstation for video editing and needs to install two M.2 NVMe SSDs. The motherboard has one M.2 slot that supports both SATA and NVMe, and another that supports only SATA. When the technician installs both drives, only the NVMe drive is detected. What is the most likely reason?
Explanation: M.2 slots can have different interface support. If one slot only supports SATA, an NVMe SSD will not be recognized. This tests knowledge of M.2 slot compatibility.
A technician is configuring a new NAS with four 10 TB hard drives. The customer wants maximum usable capacity with fault tolerance for one drive failure. The technician sets up RAID 5, but after initialization, the usable capacity is only 10 TB instead of the expected 30 TB. What is the most likely cause?
Explanation: RAID 5 with four drives of equal size should yield (n-1) * capacity = 30 TB. A 10 TB result suggests only two drives are being used, possibly due to a misconfiguration like RAID 1 or a stripe set of two drives. This tests RAID 5 capacity calculation and troubleshooting.
A technician is troubleshooting a server that uses a hardware RAID controller with a 1 GB cache. The server experiences periodic write performance drops, and the event log shows 'Cache battery low' warnings. What is the most likely impact of this condition?
Explanation: RAID controllers use cache batteries to protect data in write cache during power loss. When the battery is low, the controller may disable write caching to prevent data loss, causing write performance to drop. This tests knowledge of RAID controller cache behavior.
A small business server with a RAID 10 array of four 2 TB hard drives experiences a drive failure. The technician replaces the failed drive with an identical model. After rebuilding, the array reports as healthy, but the total capacity is now 2 TB instead of the expected 4 TB. What is the most likely cause?
Explanation: RAID 10 combines mirroring and striping. If the replacement drive is not properly sized or the array is misconfigured, capacity can be incorrect. However, the most common cause is using a drive with different geometry or the array being rebuilt as a single mirror instead of striped mirrors. This question tests understanding of RAID 10 capacity calculation.
A user complains that their external USB hard drive is not recognized when plugged into a Windows 10 workstation. The technician checks Device Manager and sees an unknown device with a yellow exclamation mark. What should the technician do first?
Explanation: A yellow exclamation mark in Device Manager typically indicates a driver issue. The first logical step is to update or reinstall the driver for the unknown device. This tests basic USB troubleshooting.
+15 more Storage and RAID Troubleshooting questions available
Practice all Storage and RAID Troubleshooting questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Storage and RAID Troubleshooting. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
Storage and RAID Troubleshooting questions on the 220-1201 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. Storage and RAID Troubleshooting is tested as part of the CompTIA A+ Core 1 220-1201 blueprint. Practicing with targeted Storage and RAID Troubleshooting questions ensures you can handle any format or difficulty that appears.
Yes. Courseiva provides free 220-1201 practice questions across all exam topics and domains. The platform includes topic-based practice, mock exams, missed-question review, bookmarked questions, and readiness tracking — no account required.
Difficulty is subjective, but Storage and RAID Troubleshooting is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
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