Troubleshooting Sun Storage[TM] Array Impending Drive Failures (Doc ID 1103184.1)

Last updated on SEPTEMBER 11, 2023

Applies to:

Purpose

The purpose of this document is to help troubleshoot disk impending drive failures for Sun Storage Arrays.

Impending drive failures can occur in two ways:

1) The disk drive itself keeps track of errors on the disk and will report to the subsystem. If too many errors have occurred on the drive, the drive will be flagged. This is known as a Drive Reported Predictive Failure Alert (PFA).
2) The system keeps track of the number errors a drive has in communicating with the RAID controllers. If too many events occur in given period, the drive will be flagged. This is known as Synthesized PFA.

PFA's are NOT drive failures. They are an early warning service supplied by the array and drives in order to give the administrator a warning that the drive may or is about to fail. This document is designed to help clarify when a drive should be replaced, if this fault should be present on an array.

Symptoms Include:

• SANtricity Storage Manager shows an alert for Impending Drive Failure Low Risk
• Common Array Manager shows an alarm for Impending Drive Failure Risk Low (xx.66.1026)
• SANtricity Storage Manager shows an alert for Impending Drive Failure Medium Risk
• Common Array Manager shows an alarm for Impending Drive Failure Risk Medium (xx.66.1025)
• SANtricity Storage Manager shows an alert for Impending Drive Failure High Risk
• Common Array Manager shows an alarm for Impending Drive Failure Risk High (xx.66.1024)

If you have been replacing a lot of drives, especially due to these faults, you will want to go through this exercise to identify the reason for the failure.

Troubleshooting Steps

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