Dell Express Flash NVMe PCIe SSD AIC Руководство пользователя - Страница 11

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I/O device error on write to NVMe PCIe SSD

Description

Windows event log may report the following entries on the first write attempt to an NVMe PCIe SSD: Event ID

7: The device, \Device\Harddisk\DRX, has a bad block.

When attempting to initialize the device using Computer Management > Storage > Disk Management, the

following message is displayed: Virtual Disk Manager, Data Error (cyclic redundancy

check).

Linux messages log may report the following entries on a write attempt to an NVMe PCIe SSD:

•

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 a number of factors that may alter the performance of an NVMe PCIe SSD. Dell recommends to take

basic setup measures to ensure performance optimization of these devices.

Cause

NVMe PCIe SSD has not been preconditioned and/or BIOS settings are not optimal.

Solution

Without preconditioning the NVMe PCIe SSD, performance measurements can be misleading as they may not

reflect long-term performance of the device. Preconditioning enables flash management, which stabilizes data

throughput over a period. For the Solid-State Storage Performance Test Specification, see snia.org.

System becomes unresponsive when NVMe PCIe SSD is

surprise removed

Description

System becomes unresponsive when the device is removed without first preparing the device for removal.

Cause

Surprise Removal is not supported in PowerEdge servers for NVMe PCIe SSD.

Solution

Execute the Prepare For Removal operation for the specific NVMe PCIe SSD from a Dell Management

application. .

Buffer I/O error on device nvmeXn1, logical block Y (where X is the number

corresponding to the device and Y is the logical block)

nvmeXn1: unable to read partition table (where X is the number corresponding

to the device)

Troubleshooting