Install the app, sign in to your NAS, and run the free scan. Nothing is uploaded, and the NAS is only read.
—Windows 10 or 11 (64-bit) on the same network as the NAS, with Chrome, Edge or Firefox.
About 40 GB for the first scan, plus about twice the size of the folders you recover. A USB drive works too.
A Synology NAS (DSM 7) and an administrator account on it.
It installs for your Windows account only.
Open the file you downloaded. No administrator rights are needed.
NAS Salvage is new, so Windows may show “Windows protected your PC”. Click More info, then Run anyway. To check the file, compare its SHA-256 above: Get-FileHash .\NASSalvage-Setup-*.exe
From the Start menu. The app opens in your browser and keeps working in the background when you close it.
You see what can be recovered before you pay anything.
DSM: Control Panel › Terminal & SNMP › Enable SSH service › port 22 › Apply. Turn it off again when you are done.
Enter the NAS address and an administrator account. The password stays in memory only and is never saved.
A few hours, depending on the NAS size (about 3 hours per TB). It only reads the NAS and continues from the same step if it is cut off.
Pick the folders you want back and where to save them. Try a small folder first.
Check watermarked previews and save only the files you want. Files that could not be recovered cost nothing.
Press Clean up when you are done, so only your save folder is left on the PC.
Windows Settings › Apps › NAS Salvage › Uninstall.
Save the files waiting for your review before you uninstall: without the working files they can no longer be opened. If you install again, the first scan runs again.