Users Guide

Troubleshooting
To get help with your Dell PowerEdge RAID Controller (PERC) 10 series, you can contact your Dell Technical Service
representative or see https://www.dell.com/support.
Topics:
• Single virtual disk performance or latency in hypervisor configurations
• Adapter at baseport not responding error message
• BIOS disabled error message
• Configured disks removed or not accessible error message
• Dirty cache data error message
• Discovery error message
• Drive Configuration Changes Error Message
• Windows operating system installation errors
• Firmware fault state error message
• Extra enclosure error message
• Foreign configuration found error message
• Foreign configuration not found in HII error message
• Degraded state of virtual disks
• Memory errors
• Preserved Cache State
• Security key errors
• General issues
• Physical disk issues
• SMART errors
• Replace member errors
• Linux operating system errors
• Drive indicator codes
• HII error messages
Single virtual disk performance or latency in
hypervisor configurations
Multi-initiator or hypervisor configurations running multiple I/O workloads to a single raid array may experience degraded
performance or latency. This is caused by upper layers sending separate I/O workloads for each virtual machine to the storage
subsystem which ends up being a random I/O workload to the under lying RAID array. For I/O workload configurations that
require lower latency restrictions and higher I/O performance it may be beneficial to run fewer I/O workloads to individual RAID
arrays or to use separate RAID arrays and physical disks for each I/O workload. Other considerations are making sure write-
back, read ahead cache is enabled for rotational disks or using solid state drives (SSDs) to improve random I/O workload
performance.
Performance degradation may also be observed when background operations such as initialization, consistency check, or
reconstructions are running on the virtual disk. See your hypervisor storage best practices or performance best practices guides
for additional configuration support.
Adapter at baseport not responding error message
Error Message:
Adapter at Baseport xxxx is not responding, where xxxx is the baseport of
the controller.
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