Reference Guide

Cause NVMe PCIe SSDs have a finite number of write cycles. When an NVMe PCIe SSD exhausts the number of writes,
it goes into Write Protect (Read Only) mode.
Solution By using system management applications, you may check the NVMe PCIe SSD state to confirm if the NVMe
PCIe SSD is in Read-Only Mode. For further instructions, contact a Dell Technical Service representative.
NVMe PCIe SSD performance measurement not optimal
Description There are several factors that may alter the performance of an NVMe PCIe SSD. It is recommended that you
configure performance optimization of these devices using the basic setup options.
Cause NVMe PCIe SSD has not been preconditioned, or the BIOS settings are not optimized.
Solution Without preconditioning the NVMe PCIe SSD, performance measurements can be misleading as they might not
reflect long-term performance of the device. Preconditioning enables flash management, which stabilizes data
throughput over a period of time. For the Solid-State Storage Performance Test Specification, see snia.org.
System becomes unresponsive when NVMe PCIe SSD is
surprise removed
Description The system becomes unresponsive when the device is removed without first preparing the device for removal.
Cause Surprise removal is only supported in PowerEdge servers for NVMe PCIe SSD running under Windows.
Solution Execute the Prepare For Removal operation for the specific NVMe PCIe SSD from a Dell Management application.
System becomes unresponsive or fails when NVMe PCIe
SSD is inserted
Description
The system becomes unresponsive or fails when inserting an NVMe PCIe SSD while accessing the system BIOS
or HII configuration utilities.
Cause Hot insertion is not supported in pre-operating system configuration utilities.
Solution
Insert only after allowing the operating system to fully load or when the server is powered off.
Troubleshooting 11