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Article Number: 000126418

PowerEdge HDD: What is Predicted Drive Failure and How to Solve it?

Summary: How to address Predicted Drive Failure when the disk is identified as "Predictive Failure."

This article may have been automatically translated. If you have any feedback regarding its quality, please let us know using the form at the bottom of this page.

Article Content

Symptoms

Note: The following article provides information about Predictive Failure on a hard drive.

What is Predicted Drive Failure and how to solve it?

Periodically, a Patrol Read is launched on a Virtual Disk. This is a consistency check on the RAID and the hard drives composing the Virtual Drive. 

If the consistency check finds bad blocks, it marks them as bad and reallocates the information to another section of this disk.

A disk is always a bit bigger than specified, so it has room to relocate some bad blocks. This can also be a firmware or a reporting issue so it is recommended to update the firmware before any drive replacement.

Cause

A consistency check on the RAID and the hard drives composing the Virtual Drive identifies "Predictive Failure."

Resolution

Perform a backup before any steps are taken.

Perform firmware updates to the Hard Drive, RAID controller, BIOS, and iDRAC to ensure that they are running the latest firmware. This is to ensure that all reporting information is up-to-date and correct.

More information about firmware update is located in Dell knowledge base article 128194: Updating Firmware and Drivers on Dell PowerEdge Servers.
Note: Reboot required to complete firmware install for RAID card.
 
If you are running Dell OpenManage Server Administrator, ensure that you are running the latest version of OMSA. See Dell knowledge base article 132087: Support for Dell OpenManage Server Administrator (OMSA)

Solution:

If the hard drive is still showing predictive failure after updates, a hard drive replacement is required.

Export the RAID controller log using Dell knowledge base articles: Send the log to Dell Technical Support for further review. 

Offline the disk and replace the hard drive.

Replace the drive with a new physical disk of equal or higher capacity and perform the Replaced Member operation. The Replaced Member operation copies data from the source physical disk of a virtual disk to a target physical disk that is not a part of the virtual disk.
 

Additional Information:

Note: This article is part of the Server Tutorials: "RAID and Disks" available here

Predictive Failures can occur due to hard drive errors detected by Self-Monitoring, Analysis, and Reporting Technology (SMART) or due to RAID Array errors such as a Double Fault or a Puncture (KB 000139251).

More troubleshooting or maintenance may be required to ensure the health of the array.

Additional Information

SupportAssist Enterprise - Setting up Automated Dispatch: SupportAssist Enterprise: Setting up Automated Dispatch - YouTube This hyperlink is taking you to a website outside of Dell Technologies.

Article Properties

Affected Product

Servers, PowerEdge, Storage

Last Published Date

02 May 2024

Version

10

Article Type

Solution

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