PowerStoreOS 4.2.0.x Patch Release Notes

Summary: This document describes the issues resolved in the patch releases of PowerStoreOS.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
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Instructions

Known issues, environmental and system requirements, and installation or update considerations associated with these patch releases are the same as the parent release. For more information, see the Dell PowerStoreOS 4.2.0.0 Release Notes on the PowerStore Info Hub. 

Release Revision History

Release Description
4.2.0.1
  • Initial release notes for PowerStoreOS 4.2.0.1 (October 2025)
4.2.0.0
  • Initial release notes for PowerStoreOS 4.2.0.0 (September 2025)

PowerStoreOS 4.2.0.1 (Build: 2594695)

Resolved issues

Issue ID Description
PSSLDF-28773 Performing a non-disruptive upgrade (NDU) to PowerStoreOS 4.2 on a PowerStore cluster with metro volumes that are mapped to a Windows or Linux cluster may result in a Data Unavailable (DU) event.
PSSLDF-24333 Performing a non-disruptive upgrade (NDU) to PowerStoreOS 4.2 on an appliance with an NVMe expansion enclosure may result in a Data Unavailable (DU) event due to an issue with upgrading the enclosure firmware.
PSSLDF-20147 Upgrading the firmware on Intel SSDs may fail because of a timing issue during firmware activation, resulting in a Data Unavailable (DU) event. 

Known issues

Issue ID Description Workaround
PSSLDF-32866 When Windows Server Failover Clustering (WSFC) is used with Metro volumes that are configured on ESXi hosts using Raw Device Mappings (RDMs), arbitration errors may appear in the Windows host log if a WSFC disk fails over. If a Windows node fails over, I/O may be interrupted. 

Use Windows Cluster Failover Manager to bring the failed disk online.

Upgrade package

If automatic download is not enabled on your PowerStore cluster, download the PowerStore upgrade package from the Dell Technologies Support site.

The name of the upgrade package on the support site is PowerStore T OS Upgrade 4.2.0.1-2594695, and the file name of the downloadable upgrade package is PowerStore T OS Upgrade 4.2.0.1-2594695-retail.tgz.bin.

PowerStoreOS 4.2.0.0 (Build: 2563584)

See the Dell PowerStoreOS 4.2.0.0 Release Notes on the PowerStore Info Hub. 

Affected Products

PowerStore, PowerStore 1000T, PowerStore 1200T, PowerStore 3000T, PowerStore 3200Q, PowerStore 3200T, PowerStore 5000T, PowerStore 500T, PowerStore 5200Q, PowerStore 5200T, PowerStore 7000T, PowerStore 9000T, PowerStore 9200T
Article Properties
Article Number: 000371351
Article Type: How To
Last Modified: 28 Oct 2025
Version:  2
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