CompTIA Server+ (SK0-005)TroubleshootingHard
A server administrator is trying to diagnose why a newly deployed virtualization host running ESXi is experiencing frequent, unexplainable crashes (Purple Screen of Death - PSOD). The server hardware was recently upgraded with new RAM modules from a different vendor than the original. Which of the following is the MOST likely cause?
- AInsufficient network bandwidth.
- BOutdated storage controller firmware.
- COverheating CPU due to inadequate cooling.
- DIncompatible or faulty RAM modules.
Show answer & explanationAnswer & explanation
Correct answer: D. Incompatible or faulty RAM modules.
Purple Screen of Death (PSOD) on ESXi (VMware's hypervisor) is analogous to a Windows Blue Screen of Death and indicates a critical kernel-level error. Given that new RAM modules from a different vendor were recently installed, incompatible or faulty RAM is a very common cause for such low-level, frequent, and unexplainable system crashes in virtualization hosts.
Why the other options are wrong
- A. Insufficient network bandwidth would cause network performance issues for VMs, not host-level kernel crashes (PSOD).
- B. Outdated storage controller firmware could lead to storage performance issues, data corruption, or VM failures, but less commonly to direct ESXi host PSODs unless it's a critical bug interacting with the kernel.
- C. While CPU overheating can cause crashes (and sometimes PSODs), the specific detail about 'new RAM modules from a different vendor' points more strongly towards memory compatibility or fault as the primary suspect.
ESXi Purple Screen of Death (PSOD)
A diagnostic screen displayed by VMware ESXi upon encountering a critical error, indicating a kernel panic or unrecoverable system failure, often due to hardware issues.
- Analogous to a Windows Blue Screen of Death (BSOD).
- Common causes include faulty RAM, CPU issues (overheating, unsupported features), driver bugs, or storage controller problems.
- Memory-related issues (incompatibility, faulty modules) are a very frequent cause, especially after upgrades.
- Requires analysis of the PSOD message and log files for deeper diagnosis.
Memory trick: Purple Screen? Your ESXi host is in a 'Memory' Maze!