Chapter 1
Mobile Devices
Course: 220 1201 Comptia A Exam Core 1
Subject: 220 1201 Comptia Exam Core 1
Chapter: Network And Hardware Troubleshooting
Storage drives and RAID (Redundant Array of Independent Disks) arrays are critical components of modern computing systems, handling the bulk of data storage and retrieval. However, they can encounter various issues that, if not addressed, can lead to data loss, system failure, or performance degradation. Below are common symptoms associated with problems in these systems and how to troubleshoot them.
1. Light-emitting Diode (LED) Status Indicators
- Symptom: LEDs on storage devices, like hard drives or RAID controllers, can provide valuable diagnostic information.
A solid green light typically indicates normal operation, whereas flashing amber might signal a degraded array or failed drive.
- A solid green light typically indicates normal operation, whereas flashing amber might signal a degraded array or failed drive.
- Troubleshooting: Refer to the manufacturer’s manual to interpret LED patterns correctly. Ensure the connection cables are securely plugged in.
- Example: If a RAID controller shows a flashing amber LED, check the RAID management software, as this likely points to a degraded RAID array or a failed drive in need of replacement.