The Synology SA3400D is a 2U rack-mountable 12-bay scalable NAS with an AMD EPYC processor, dual 25GbE ports, and dual-controller high-availability architecture, designed for mission-critical enterprise storage. It runs DiskStation Manager and provides active-active controller failover for maximum uptime in demanding business environments.
Product released: October 1, 2021
Latest firmware version
Version 7.4.1-90080 Update 1, released October 12, 2026
Last checked for updates: Oct 31, 2026 23:00 UTC
What's new in version 7.4.1-90080 Update 1
Important notes
Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version.
This update will restart the device.
Fixed Issues
Fixed security vulnerabilities.
firmware version history
LatestUpdate has tracked 20 versions of Synology SA3400D firmware, released between November 26, 2024 and October 12, 2026.
Version 7.4.1-90080 Update 1 - October 12, 2026: Important notes Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, p…
Version 7.3.2-86009 Update 5 - October 12, 2026: Important notes Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, p…
Version 7.4.1-90080 - July 23, 2026: Important Note After installing this update, you will not be able to downgrade to a previous DSM version. This update will restart your Synology NAS. If auto u…
Version 7.3.2-86009 Update 4 - June 30, 2026: Important notes Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, p…
Version 7.2.2-72806 Update 9 - June 30, 2026: Important notes Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, p…
Version 7.4-90075 - June 16, 2026: Important Note After installing this update, you will not be able to downgrade to a previous DSM version. This update will restart your Synology NAS. If auto u…
Version 7.3.2-86009 Update 3 - March 19, 2026: Important notes Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, p…
Version 7.2.2-72806 Update 8 - March 19, 2026: Important notes Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, p…
Version 7.3.2-86009 Update 2 - March 16, 2026: Important notes Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, p…
Version 7.2.2-72806 Update 7 - March 16, 2026: Important notes Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, p…
Version 7.2.2-72806 Update 6 - January 30, 2026: Important notes Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, p…
Version 7.3.2-86009 Update 1 - January 29, 2026: Important notes Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, p…
Version 7.3.2-86009 - December 2, 2025: Important Note After installing this update, you will not be able to downgrade to a previous DSM version. This update will restart your Synology NAS. If auto u…
Version 7.3.1-86003 Update 1 - November 18, 2025: Important notes Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, p…
Version 7.2.2-72806 Update 5 - November 18, 2025: Important notes Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, p…
Version 7.3.1-86003 - October 28, 2025: Important Note After installing this update, you will not be able to downgrade to a previous DSM version. This update will restart your Synology NAS. If auto u…
Version 7.3-81180 - October 8, 2025: Important Note After installing this update, you will not be able to downgrade to a previous DSM version. This update will restart your Synology NAS. If auto u…
Version 7.2.2-72806 Update 4 - July 24, 2025: Important notes Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, p…
Version 7.2.2-72806 Update 3 - February 13, 2025: Important notes Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, p…
Version 7.2.2-72806 Update 2 - November 26, 2024: Important notes Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, p…
Update prediction
A firmware update is expected soon, between October 28, 2026 and December 25, 2026.
Synology typically releases firmware updates for this product approximately every 50 days.
The Synology SA3400D is a 2U rack-mountable 12-bay scalable NAS with an AMD EPYC processor, dual 25GbE ports, and dual-controller high-availability architecture, designed for mission-critical enterprise storage. It runs DiskStation Manager and provides active-active controller failover for maximum uptime in demanding business environments. It was originally released on October 1, 2021.
What is the latest firmware version of Synology SA3400D?
The latest firmware version of Synology SA3400D is 7.4.1-90080 Update 1. It was released on October 12, 2026.
What changed in Synology SA3400D firmware version 7.4.1-90080 Update 1?
Synology SA3400D firmware version 7.4.1-90080 Update 1 includes the following changes: Important notes
Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually.
The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly.
Your DSM is working fine without having to update. The system evaluates service statuses and system set...
How often does Synology release firmware updates for Synology SA3400D?
We have tracked 20 firmware versions of Synology SA3400D. Based on historical patterns, updates are released approximately every 50 days.
When is the next Synology SA3400D firmware update expected?
Based on this product's update history, a firmware update for Synology SA3400D is expected soon, between October 28, 2026 and December 25, 2026.
Is Synology SA3400D still receiving firmware updates?
Yes, Synology SA3400D received a firmware update within the last month. The most recent version is 7.4.1-90080 Update 1.