Reset a Synology NAS Without Losing Your Data
Safely Resetting a Synology NAS While Preserving Your Data
Resetting a NAS often sounds risky, especially when it stores critical files, backups, or business data. Fortunately, a Synology NAS is designed with reset options that allow you to restore access or fix configuration issues without deleting stored data, if done correctly.
This guide explains how to reset a Synology NAS safely, the different reset modes available, and the steps you should take to avoid accidental data loss.
Why You Might Need to Reset a Synology NAS
Common reasons for resetting include:
Forgotten administrator password
Network or IP configuration problems
Corrupted system settings
DSM login or access issues
In most of these cases, a full factory reset is unnecessary and should be avoided.
Understanding Synology Reset Modes
Synology NAS systems offer multiple reset types, each designed for specific scenarios.
Mode 1: Soft Reset (Recommended)
This reset clears network settings and admin credentials only.
What it resets
Admin password
Network configuration (IP, gateway, DNS)
DSM access settings
What it keeps
All data
Storage pools and volumes
Shared folders
Installed packages
This is the safest and most commonly used reset option.
Mode 2: DSM Reinstallation (Use with Caution)
This reset reinstalls DSM while preserving data.
What it resets
DSM system files
User accounts and permissions
Most system settings
What it keeps
Storage pools and volumes
Data stored on disks
This option should only be used if DSM itself is damaged.
How to Perform a Soft Reset Without Losing Data
Step-by-Step Instructions
Power on the NAS
Locate the RESET button on the back.
Press and hold for about 4 seconds
Release when you hear a beep
The NAS will restart with default network settings and admin credentials cleared.
What to Do After
Use
find.synology.comor Synology Assistant.Recreate the admin account.
Reconfigure network settings
Your data will remain intact.
How to Reinstall DSM Without Deleting Data
If DSM is corrupted:
Perform the reset and wait for the second beep (longer press)
Access the NAS via browser.
Choose Reinstall DSM
Follow on-screen instructions
Always confirm that storage volumes are detected before proceeding.
Critical Precautions Before Resetting
To avoid accidental data loss:
Never initialize disks unless explicitly required.
Confirm storage pools are “Healthy.”
Do not remove drives during reset.
Avoid a factory reset unless replacing or decommissioning the NAS
If unsure, stop and seek guidance before proceeding.
What a Reset Will Not Fix
A reset will not repair:
Failed hard drives
Degraded RAID arrays
Physical hardware damage
In these cases, resetting can make recovery more difficult if done incorrectly.
Synology’s Data-Safe Reset Design
Synology separates system configuration from stored data. DSM settings, users, and network parameters can be reset independently of storage volumes. This design allows administrators to recover access and fix configuration problems without risking stored files, provided the correct reset method is used.
Common Reset Mistakes to Avoid
Holding the reset button too long
Selecting “Initialize” instead of “Recover.”
Resetting without understanding the reset mode
Assuming all resets are data-safe
Most data loss during resets is caused by user error, not the reset process itself.
How Epis Technology Helps with Safe NAS Recovery
Epis Technology helps organizations safely recover access to Synology NAS systems without risking data. The team guides clients through proper reset methods, validates storage integrity, and restores secure access after resets. Epis Technology also assists with rebuilding permissions, network configuration, and backup verification to ensure systems return to normal operation quickly and safely.
Resetting a Synology NAS does not have to mean losing your data. By using the correct reset mode and following proper precautions, you can restore access, fix configuration issues, and keep your storage intact.
With Synology’s data-safe reset design and expert assistance from Epis Technology, even complex NAS recovery scenarios can be handled confidently and securely.
About Epis Technology
Epis Technology provides enterprise IT infrastructure, data protection, and Synology consulting services. The company specializes in NAS recovery, secure deployments, backup architecture, hybrid cloud integration, Microsoft 365 and Google Workspace backups, fully managed PC backups, and business continuity planning. Epis Technology helps organizations protect and recover critical data without unnecessary risk.