Published: February 16, 2026
Mandatory Upgrade to SFA OS 12.8 Due to Partial Rebuild Issue
Under complex conditions, a partial rebuild may not complete on drives with capacities greater than 8 TB under declustered RAID versions of SFA OS. When encountered, this issue results in data corruption. Upgrade to SFA OS 12.8.0 or higher resolves this issue and is MANDATORY for all customers running SFA OS versions 11.0.0 through 12.7.x.
Please contact DDN Support as soon as possible to obtain the latest firmware and an upgrade plan.
Published: February 16, 2026
Drive Firmware Update Advisory January 2026
Drive firmware updates for 10 drives from Phison and Western Digital/Sandisk became available from 16 November 2025 through 31 January 2026.
Drive firmware updates are never cosmetic and are MANDATORY for all affected customers. If any of these drives are installed in your DDN storage system, please contact DDN Customer Support as soon as possible to obtain the latest firmware and an upgrade plan.
Published: December 2, 2025
Drive Firmware Update Advisory November 2025
Drive firmware updates became available for 22 drive models from Phison, Solidigm, and Western Digital from 16 August 2025 to 15 November 2025.
Drive manufacturers release these updates to address issues with performance, reliability, availability, or serviceability and to fix defects that may pose risks to customer data. Drive firmware changes are never merely cosmetic, and update installation is MANDATORY for affected DDN customers.
Published: November 10, 2025
EXAScaler Log Agent Technical Support Advisory
Enable EXAScaler Log Agent on EXAScaler & A3I Systems
DDN recommends enabling the EXAScaler (ES) Log Agent, a built-in utility within EXAScaler that collects system health and configuration data from EXAScaler and associated SFA systems. When enabled, it supplies diagnostic data for DDN Support’s AI-assisted analysis, allowing faster issue detection, more accurate diagnosis, and quicker resolution.
Published: July 15, 2025
Drive Firmware Update Advisory June 2025
Drive firmware updates became available between March 15th and June 30th of 2025 for 10 drive models from Kioxia, Solidigm, and Western Digital. All are MANDATORY updates for affected DDN customers. Drive product IDs for SHOW PD are provided in the bulletin linked below. Affected customers are advised to update their drive firmware as soon as possible.
Published: April 2, 2025
Drive Firmware Update Advisory March 2025 (SPT-TSB-0188)
Newly qualified drive firmware updates became available from January 15 to March 15 of 2025 for 6 drive models from Phison and Solidigm. If any of these drives are installed in your DDN storage systems, please contact DDN Support to obtain the latest firmware and an upgrade plan. Instructions for checking installed firmware versions are provided in the bulletin.
ALERT! Drive firmware updates are never merely cosmetic. All drive firmware updates are designated MANDATORY by DDN Engineering.
Published: April 2, 2025
DataFlow May Delete Data When Management Task Is Removed (SPT-TSB-0187)
In certain versions of DDN DataFlow, under certain specific conditions, data may be deleted in error or advanced task configurations may be lost if a data management task is removed from the system. Lost task configurations must be restored manually. Deleted data must be recovered from backup. Upgrading to DataFlow 4.2.2.21 or higher prevents this issue. Details in bulletin.
Published: February 4, 2025
Drive Firmware Update Advisory January 2025 (SPT-TSB-0186)
Newly qualified drive firmware updates became available from 15 November 2024 through 15 January 2025 for 48 drive models from HGST, Phison, Solidigm, and Western Digital (WDC). If any of these drives are installed in your DDN storage equipment, please contact DDN Support to obtain the new firmware and an upgrade plan.
Drive firmware updates are mandatory unless specifically noted otherwise.
Published: December 6, 2024
Unrecoverable Bad Blocks on Shutdown, Restart, or Upgrade to SFA OS Versions Prior to 12.5.0 (SPT-TSB-0183)
In a certain corner case on versions of SFA OS prior to 12.5.0, the shutdown, restart, or upgrade of an SFA controller may lead to unrecoverable bad blocks. Customers are advised to upgrade to SFA OS 12.5.0 or higher, or to install a fix kit on both controllers in the storage subsystem. Alternative shutdown and restart procedures are also provided in this bulletin. Please contact DDN Support for the fix kit and an upgrade plan.
Published: November 11, 2024
Drive Firmware Update Advisory October 2024 (SPT-TSB-0182)
Drive firmware updates are never merely cosmetic. All drive firmware updates
are designated MANDATORY by DDN Engineering.
Newly qualified firmware updates became available in June through October of 2024 for 42 drive models. If any of these drives are installed in your storage system, please contact DDN Support to obtain the latest firmware and an upgrade plan.