XigmaNAS

Q: Can I recover deleted files and or directories?
A: Unfortunately, the most likely answer is “you can't”. Second most likely is “Maybe, with infinite time and finances”. There are a few options for data recovery. R-Studio - Available here - is one many people report success with. Read this topic for important info: Fatal Trap 12 on XigmaNAS causes Restart when accessing Raid5.

You can also try UFS Explorer.

Then there are a few other alternatives reviewed in Five Best Free Data Recovery Tools:

1. Test Disk.
2. Recuva.
3. PhotoRec.
4. Restoration.
5. Undelete Plus.
6. Did you accidentally format your NTFS drive or have you lost data on it? Try NTFS Data Recovery and Unformat tool. This software is reported to work well, read [SOLVED] Please help me I lost 50 gigas of family data.