Legacy DiskStation decision guide
The DS920+ has become a useful test of whether an older NAS should be replaced because of age or kept because its particular strengths still matter. In 2026 it combines an Intel Celeron J4125, four internal bays, two M.2 slots and continued DSM maintenance with a network design that tops out at dual 1GbE. That mixture makes the right answer highly workload-dependent, especially for Plex and Jellyfin owners who still benefit from Intel media hardware.
Quick answer
The DS920+ can still make sense when its limits match your workload
Keep a healthy DS920+ when four bays, the J4125 media engine and DSM 7.4 support still cover the job. Replace it when 1GbE is delaying real work, memory is constraining services, the chassis is becoming unreliable, or the next storage expansion would cost more than moving to a current platform. A used DS920+ only makes sense at a clear discount because the model is discontinued and Synology lists technical support as Limited.
Current Amazon listings
Previous-generation Synology models and current upgrade destinations
A listing is not evidence that a discontinued NAS is still officially supported, and marketplace price alone does not make an older model a good buy.
Technical decision
Do not replace DS920+ just because a newer suffix exists
Treat DS920+ as a capable media-era four-bay NAS with one conspicuous modern weakness: networking. A current four-bay model can bring multi-gig Ethernet and a newer expansion path, but moving to an AMD-based replacement can also surrender Intel Quick Sync. The upgrade decision should therefore compare the exact workload, not model-number age.
Interactive ownership tool
Keep, Buy Used or Upgrade Planner
Use this as a planning aid, not as a replacement for Synology's live support database. Product status and DSM availability can change, so recheck the exact model before a purchase, migration or major DSM upgrade.
Ownership checklist
Four checks before keeping, buying or replacing an older Synology
Check support separately from availability
Discontinued does not automatically mean unsupported. Compare Product Availability, DSM Update status and Technical Support as separate fields.
Verify the exact DSM path
Use the Download Center and current release notes for the exact model. Do not infer DSM 7.4 support from a similar model number.
Upgrade for a real bottleneck
Bay pressure, network speed, memory, hardware condition and workload requirements are stronger reasons to replace a NAS than age alone.
Protect data before migration
Keep an independent verified backup before drive swaps, migrations, DSM upgrades or retiring an older DiskStation.
Support is better than the word discontinued suggests
Synology lists DS920+ as Discontinued while still showing Full DSM updates and Limited technical support. Those three fields describe different things. Production has ended, operating-system maintenance continues, and the support channel is less comprehensive than it once was. For an owner, that is a reason to keep good backups and watch hardware condition, not a command to retire a functioning box immediately.
Why the J4125 still gives DS920+ a niche
The Intel Celeron J4125 is not a fast general-purpose processor by current standards, yet its integrated graphics are exactly why DS920+ remains attractive to some home-media users. Four cores, 4 GB of onboard DDR4 with an official 8 GB ceiling, and hardware video capabilities can be more useful for a Plex household than a newer CPU that wins benchmarks but lacks the same media path. Judge the processor by the services you actually run.
DSM 7.4 keeps the software story current
DS920+ remains on the DSM 7.4 path, so owners are not frozen on an obsolete operating system merely because the enclosure dates from 2020. Before installing DSM 7.4, record package versions, verify a restorable backup and read the exact model release note. Synology states that a normal downgrade to an earlier DSM release is not available after moving to DSM 7.4, which raises the importance of checking package compatibility first.
Dual 1GbE is the everyday ceiling
The most visible age marker is networking. DS920+ offers two 1GbE ports, useful for redundancy, link aggregation and serving multiple modest clients, but one workstation does not magically receive 2Gbps from a normal bonded setup. Creators moving large photo libraries, VM backups or video projects can hit this wall long before the disks are exhausted. Measure transfers from the client that matters before assuming storage drives are the bottleneck.
Plex and Jellyfin can justify keeping it
A DS920+ that mainly stores media and performs occasional hardware-assisted conversion can remain unusually well matched to its job. Direct Play is easy for many NAS units; transcoding is the differentiator. If your current clients force conversions, subtitles trigger processing or remote users need lower bitrates, test those exact streams before replacing the Intel chassis. A migration that improves Ethernet while making media conversion worse is not automatically an upgrade.
Containers need a realistic memory budget
Container Manager workloads can outgrow the DS920+ sooner than file serving does. The official memory ceiling is modest, and several always-on services can compete with DSM for RAM even when CPU utilization looks harmless. Track swap activity and application latency rather than simply counting containers. If you are adding Immich, databases, search services and automation together, moving compute elsewhere or moving to a higher-memory NAS may be cleaner than forcing everything into this enclosure.
The two M.2 slots are useful but not a new CPU
DS920+ includes two M.2 NVMe slots, originally positioned around SSD caching. They can improve workloads with repeated small reads and writes when the cache actually matches access patterns, but NVMe does not repair a 1GbE client bottleneck or create more CPU headroom. Before spending on flash, identify whether the delay is disk latency, network throughput, application memory or transcoding. Buy the component that addresses the measured constraint.
DX517 expansion can extend the life of a good chassis
The four internal bays can grow to nine with one DX517, which gives existing owners an alternative to replacing the NAS solely because the first four slots filled. Expansion is most compelling when the DS920+ itself is healthy and the network remains adequate. If you need both more drives and multi-gig networking, however, putting fresh money into an older expansion ecosystem deserves comparison against a current higher-bay DiskStation.
Drive replacement is a chance to reassess the whole pool
Large CMR NAS or enterprise drives can keep DS920+ useful for years, but capacity upgrades should be planned around RAID/SHR behavior and backup recovery, not just the biggest disk that physically fits. Replacing disks one at a time may be sensible for a healthy pool. If multiple drives are aging together, use the event to compare the cost of a full drive refresh against migrating the data to a newer chassis.
Hardware age matters more than calendar age
Fans, power supplies, USB ports, Ethernet jacks and drive backplanes do not appear in CPU comparisons, yet they determine whether an old NAS is trustworthy. Listen for new fan behavior, watch unexpected reboots, review SMART warnings and keep an independent backup that does not depend on the DS920+ booting. A stable six-year-old NAS can be a better asset than a newer neglected one; repeated hardware symptoms reverse that conclusion quickly.
Buying used is a price-and-condition decision
A second-hand DS920+ should not be bought simply because the model has a strong reputation. Ask for the serial number, drive history, photos of the bays and ports, evidence that both Ethernet interfaces work and confirmation that the seller has reset the unit correctly. Compare the all-in price with a new current model after adding any required RAM, drives or expansion. The used premium sometimes attached to Intel Plex models only makes sense if you need that specific capability.
The practical replacement trigger
Replace DS920+ when its limitations are showing up in daily work: 1GbE is lengthening transfers, memory is constantly tight, expansion cost is piling up, the chassis is showing reliability signs, or your desired application no longer fits. Keep it when none of those conditions is true. An owner who already has a stable DS920+ and compatible drives starts from a very different economic position than a shopper buying into the platform today.
Questions people ask
DS920+ ownership and upgrade questions
Is the DS920+ still supported in 2026?
Yes in the important software sense, but with nuance. Synology currently marks it Discontinued, gives it Full DSM update status, and lists Technical Support as Limited. Recheck the live status page before relying on that classification for a purchase.
Does DS920+ support DSM 7.4?
The DS920+ is on the DSM 7.4 update path used for this Sprint. Confirm the exact build in Download Center before installation and verify package compatibility because DSM 7.4 is not normally downgradable afterward.
Should I replace my DS920+?
Replace it for a demonstrated limitation or reliability problem, not merely because 920 is an older model number. Native multi-gig networking and additional memory headroom are common reasons; a healthy media-focused unit may still be a strong fit.
What is the best upgrade from DS920+?
There is no universal successor. DS925+ improves infrastructure features and networking, while an Intel-based current model may be preferable when hardware media conversion is central. Match the replacement to the bottleneck you want removed.
Is DS920+ worth buying used?
Only when condition is documented and the price is meaningfully below a current alternative. The Intel media engine can justify interest, but discontinued hardware should not command a premium that erases the value of a new warranty and newer interfaces.
What CPU does DS920+ use?
It uses the four-core Intel Celeron J4125. The chip is modest for heavy compute but remains relevant because its integrated graphics can assist supported media workloads.
How much RAM does DS920+ support?
Synology specifies 4 GB onboard and an official maximum of 8 GB. If your service stack is regularly memory-bound, that ceiling is a legitimate reason to consider a newer platform.
How many drives can DS920+ use?
There are four internal drive bays. One DX517 expansion unit can take the system to nine bays, provided expansion remains the sensible investment for your workload.
Does DS920+ have M.2 NVMe slots?
Yes, two M.2 2280 NVMe slots are built in. Evaluate them around supported cache or storage behavior for your DSM configuration rather than assuming NVMe will accelerate every workload.
What is the biggest weakness of DS920+ today?
For many owners it is the dual-1GbE network design. The answer can differ for heavy container users, but large workstation transfers make the networking age especially visible.
Official references and methodology
Verify the exact model, DSM build, package versions and support state
Cloudzat cross-checks DS920+ lifecycle fields against Synology Product Support Status, uses the official 2020 datasheet for hardware limits, and treats DSM release information as a separate software signal. The recommendation layer then weighs Intel media value against gigabit networking, memory limits, expansion cost and chassis health.
- DS920+ Product Support Status
- DS920+ DSM release notes
- DS920+ official hardware documentation
- DS920+ Download Center
As an Amazon Associate, Cloudzat may earn from qualifying purchases. Prices, availability, Product Support Status, DSM builds and compatibility can change. Verify the exact model in Synology's current Product Support Status and Download Center before purchasing used hardware, replacing a NAS or changing a production system.