Synology
Synology DSM 6.x NAS: check support, backup and exposure
An outdated NAS combines security and data risks. The priority diagnostic is external backup, Internet exposure, then DSM compatibility.
- Risk level
- High risk
- Category
- NAS and storage
- Last reviewed
- 2026-05-23
- Confidence
- medium
Support status
DSM 6.2 reached the end of its extended life phase on October 1, 2024; also verify the exact model because some NAS remain limited to DSM 6.2.
Typical symptoms
- DSM no longer offers a major update
- Critical packages are incompatible
- NAS exposed through port forwarding
- External backup absent or never tested
Fixes to try
- Test restore from backup before migration
- Close direct Internet exposure and prefer VPN
- Install available DSM/package updates
- Check SMART, disk space and RAID status
Alternatives
- NAS compatible with a recent DSM release
- Encrypted cloud storage for off-site backup
- Maintained local mini-server for advanced users
Affiliate slot ready: add an approved partner URL in the environment.