Customer Notice: Installation of the 2025 R1 OS Security Rollup May Fail on Avamar Data Store Gen4T and Gen4S Multi-Node Systems

Summary: Installation of the 2025 R1 OS Security Rollup may fail on Dell Avamar Data Store Gen4T and Gen4S multinode systems.

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.
Check out other resources

Symptoms

An issue has been identified in Dell Avamar Data Store environments running Gen4T and Gen4S hardware. The 2025 R1 OS Security Rollup may fail during reboot on nonutility nodes, leaving storage nodes offline and disrupting the installation process. 

Note: This issue does not affect systems running Gen5A hardware.

Cause

A failure to install the GRand Unified Bootloader (GRUB2) on Gen4T and Gen4S storage nodes causes this issue. When this occurs, the operating system is unable to boot correctly, leaving the affected nodes offline. Customers are advised not to install the 2025 R1 OS Security Rollup on any multinode Avamar Data Store Gen4T or Gen4S systems. 

Resolution

Customers can resolve this issue by installing the 2025 R2 OS Security Rollup. For additional details, refer to KB 000351152 titled DSA-2025-293: Security update for Dell Avamar, Dell Networker Virtual Edition (NVE) and Dell PowerProtect DP Series Appliance / Dell Integrated Data Protection Appliance (IDPA) Multiple Third-Party Vulnerabilities.

Affected customers should initiate a support case with Dell Technical Support when failure symptoms are detected. Provide Avamar system ID and details of any affected nodes to help expedite resolution.

Affected Products

Avamar Data Store Gen4T, Avamar Server
Article Properties
Article Number: 000334245
Article Type: Solution
Last Modified: 15 Aug 2025
Version:  4
Find answers to your questions from other Dell users
Support Services
Check if your device is covered by Support Services.