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General Guidance for Diagnosis (Disk Failures/Errors) and Replacing Internal Server Disks and JBOD Disks within Solaris (Doc ID 1010946.1)

Last updated on JANUARY 30, 2024

Applies to:

Sun Solaris Volume Manager (SVM) - Version 11.9.0 to 11.10.0 [Release 11.0]
Sun SPARC Enterprise M5000 Server
Oracle Solaris on SPARC (64-bit)
Oracle Solaris on SPARC (32-bit)
Oracle Solaris on x86-64 (64-bit)
Oracle Solaris on x86 (32-bit)


The most commonly replaced hardware in any computer system is the disk drive.  A failed disk will trigger many faults, by many monitoring utilities.  Correct interpretation of these utilities is critically important to verify the following:

In this article, we discuss some approaches to disk failures. Included are the internal disk drive (where the disk is resident inside the server) as well as externally-attached JBODs (just a bunch of disks).


This document is NOT intended for any disk being managed by a hardware RAID controller, either internal or external to the server.


All subsequent references to volume management software is for Solaris Volume Manager. This article does not discuss the volume management features of ZFS.


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In this Document
 SECTION 1 - Examples where no disk replacement is required.
 Example 1 - (SVM report "Needs Maintenance" where disk label is overwritten)
 Example 2 - (Hard errors reported by 'iostat')
 Example 3 - (After disk replacement SVM still report "Needs Maintenance")
 SECTION 2 - Examples where the disk drive is repaired instead of replaced.
 Example 4 - (Reseat the disk physically)
 Example 5 - (Errors on specific disk blocks) 
 Example 6 - (Known bug in disk firmware)
 SECTION 3 - Actual Disk Replacement Procedures
 Resolution Path Document of Disk Replacements if Solaris Cluster is installed.
 Resolution Path Documents of Disk Replacements if Volume Management Software is used.
 Resolution Path Documents of Disk Replacements for Server
 Legacy Servers
 Blade Servers
 T3, T4 and M Series
 Resolution Path Documents of Disk Replacements for JBODS

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