Supported
Synology DSM (DiskStation Manager) · DSM 7.3 (LTS)
Inside the published support window. The published end-of-support date is 2028-10 — 820 days from today.
Scope: software releaseAs of 2026-08-01
Lifecycle timeline
- 2027-10 — End of active support · End of maintenance
- 2028-10 — End of support · End of standard support
Why this status?
GA Oct 2025. Also the final release supporting Mail Station/Synology Mail Server (EOL 2026-04-08).
DSM (DiskStation Manager) releases still inside the support window
- DSM 7.4 — support ends 2028-06
Reported as still supported by the cited source. Synology documents the upgrade path for your edition and contract — confirm there before planning change work.
Evidence
- Synology Software Life Cycle Policy (PDF, last updated Jul 3, 2026) Official · checked 2026-07-15
- End-of-Life Announcement for DSM 6.2 Official · checked 2026-07-15
- End-of-Availability notice for legacy DSM, Surveillance Station, SRM, and more Official · checked 2026-07-15
- End-of-Life Announcement for Mail Station and Synology Mail Server Official · checked 2026-07-15
- Synology Product Support Status (model lookup portal) Official · checked 2026-07-15
- Synology DSM 6.2 EOL announcement Official · checked 2026-07-15
Keep going
Status derived deterministically from the published milestones. When a vendor does not publish a date, this page says so — it never guesses.