DSM upgrade decision

Should You Upgrade to Synology DSM 7.4.1?

DSM 7.4 was released June 16, 2026 and DSM 7.4.1 followed July 23, 2026. Synology’s current release notes state that once DSM 7.4 is installed, you cannot downgrade to a previous DSM version. That makes pre-upgrade package checks, backup verification and a maintenance window more important than treating the update like a routine phone patch.

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Quick answer

Upgrade when the system is supported and recoverable

DSM 7.4.1 includes fixes after the initial 7.4 release, including issues involving USB UPS recognition and USB devices on certain models. If your NAS is stable on an older DSM and runs critical third-party packages, verify compatibility before crossing the no-downgrade boundary.

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Hardware relevant to this technical workflow

This Sprint 9F catalogue is intentionally focused on current and previous Synology Plus systems. Storage-repair pages can also read compatible third-party NAS hard-drive data from Cloudzat Storage Price Intelligence in read-only mode. Product cards support the decision; they never override current Synology compatibility or model-specific repair rules.

Checking the dedicated Synology technical catalogue…

Technical decision

The right answer depends on your recovery path

A current backup, package inventory and tested access path make an upgrade manageable. A NAS with one copy of important data and undocumented containers should be fixed before any major DSM transition.

Interactive technical tool

DSM 7.4.1 Upgrade Readiness Checker

Use this as a planning aid. It identifies capacity, redundancy, deployment or repair constraints, but it does not replace the current Synology model manual, DSM documentation or upstream application release notes.

Technical safety checklist

Four checks before changing a production NAS

Protect data before maintenance

A healthy RAID state is not a backup. Confirm an independent restorable copy before repairs, DSM upgrades, RAID migration or major container changes.

Change one layer at a time

Storage, DSM, networking and application changes should be separated so an unexpected result can be traced to one action rather than several.

Record the exact state

Write down model, DSM build, pool type, drive serials, ports, mapped folders and current application versions before modifying a production NAS.

Verify the result

A repair or upgrade is complete only after storage health, services, backups and representative restores behave as expected.

DSM 7.4.1 is the current 7.4 release

DSM 7.4.1 is the current 7.4 release is central to Should You Upgrade to DSM 7.4?: Synology lists version 7.4.1-90080 dated July 23, 2026 after the original 7.4-90075 release. For Should You Upgrade to DSM 7.4?, record the dsm-upgrade path baseline before action. When checking dsm 7.4.1 is the current 7.4 release, compare the dsm-upgrade path result with that earlier dsm-upgrade path baseline.

A tested backup protects the dsm-upgrade path workflow during dsm 7.4.1 is the current 7.4 release. For Should You Upgrade to DSM 7.4?, recovery of the dsm-upgrade path state matters more than speed.

The downgrade warning is explicit

For Should You Upgrade to DSM 7.4?, the downgrade warning is explicit matters because Synology states that after installing DSM 7.4 you cannot downgrade to a previous DSM version, which changes the risk calculation for critical systems. For Should You Upgrade to DSM 7.4?, record the dsm-upgrade path baseline before action. When checking the downgrade warning is explicit, compare the dsm-upgrade path result with that earlier dsm-upgrade path baseline.

Document the dsm-upgrade path decision around the downgrade warning is explicit. In Should You Upgrade to DSM 7.4?, record why the dsm-upgrade path state changed and what outcome the dsm-upgrade path procedure expects.

Some models receive 7.4 differently

Inside Should You Upgrade to DSM 7.4?, the practical constraint is this: older supported systems may require a manual Download Center patch rather than an automatic notification, and some models remain on their most suitable DSM. For Should You Upgrade to DSM 7.4?, record the dsm-upgrade path baseline before action. When checking some models receive 7.4 differently, compare the dsm-upgrade path result with that earlier dsm-upgrade path baseline.

Keep some models receive 7.4 differently separate from other dsm-upgrade path changes. On Should You Upgrade to DSM 7.4?, isolating the dsm-upgrade path work makes a failure in the dsm-upgrade path path easier to identify.

Package compatibility should be checked first

The Should You Upgrade to DSM 7.4? reason to study package compatibility should be checked first is straightforward: Synology notes packages that are automatically updated or require compatible versions, while third-party packages and containers have their own support timelines. For Should You Upgrade to DSM 7.4?, record the dsm-upgrade path baseline before action. When checking package compatibility should be checked first, compare the dsm-upgrade path result with that earlier dsm-upgrade path baseline.

Before buying hardware for package compatibility should be checked first, decide whether the dsm-upgrade path target is capacity, redundancy or availability; verify the resulting dsm-upgrade path outcome directly.

Backups should be tested before the reboot

Should You Upgrade to DSM 7.4? planning can fail here because a successful scheduled job is weaker evidence than restoring representative files and confirming credentials for the offsite copy. For Should You Upgrade to DSM 7.4?, record the dsm-upgrade path baseline before action. When checking backups should be tested before the reboot, compare the dsm-upgrade path result with that earlier dsm-upgrade path baseline.

In Should You Upgrade to DSM 7.4?, make the dsm-upgrade path step reversible. Back up the dsm-upgrade path state; change one variable for backups should be tested before the reboot; verify the dsm-upgrade path result before continuing.

Containers deserve a separate inventory

A safer Should You Upgrade to DSM 7.4? interpretation starts with one fact: Compose projects, environment variables, databases and mapped volumes should be recorded so application problems can be distinguished from DSM problems. For Should You Upgrade to DSM 7.4?, record the dsm-upgrade path baseline before action. When checking containers deserve a separate inventory, compare the dsm-upgrade path result with that earlier dsm-upgrade path baseline.

If a tutorial conflicts with the dsm-upgrade path behavior on Should You Upgrade to DSM 7.4?, stop at containers deserve a separate inventory; follow the model-specific Synology instructions for the dsm-upgrade path condition.

UPS and USB users should read 7.4.1 notes

UPS and USB users should read 7.4.1 notes is central to Should You Upgrade to DSM 7.4?: the 7.4.1 release specifically fixes USB UPS recognition and USB-device issues that affected some systems after 7.4. For Should You Upgrade to DSM 7.4?, record the dsm-upgrade path baseline before action. When checking ups and usb users should read 7.4.1 notes, compare the dsm-upgrade path result with that earlier dsm-upgrade path baseline.

A tested backup protects the dsm-upgrade path workflow during ups and usb users should read 7.4.1 notes. For Should You Upgrade to DSM 7.4?, recovery of the dsm-upgrade path state matters more than speed.

Network access should be documented

For Should You Upgrade to DSM 7.4?, network access should be documented matters because record the NAS IP, local discovery method and administrator access path before the update so a changed service does not become a recovery panic. For Should You Upgrade to DSM 7.4?, record the dsm-upgrade path baseline before action. When checking network access should be documented, compare the dsm-upgrade path result with that earlier dsm-upgrade path baseline.

Document the dsm-upgrade path decision around network access should be documented. In Should You Upgrade to DSM 7.4?, record why the dsm-upgrade path state changed and what outcome the dsm-upgrade path procedure expects.

Storage health should be green first

Inside Should You Upgrade to DSM 7.4?, the practical constraint is this: do not combine a major DSM update with an unresolved degraded pool, failing drive or active rebuild unless vendor support explicitly directs it. For Should You Upgrade to DSM 7.4?, record the dsm-upgrade path baseline before action. When checking storage health should be green first, compare the dsm-upgrade path result with that earlier dsm-upgrade path baseline.

Keep storage health should be green first separate from other dsm-upgrade path changes. On Should You Upgrade to DSM 7.4?, isolating the dsm-upgrade path work makes a failure in the dsm-upgrade path path easier to identify.

Legacy models deserve extra caution

The Should You Upgrade to DSM 7.4? reason to study legacy models deserve extra caution is straightforward: when DSM 7.4 is the final upgradable release for a model, future package support and hardware age should be part of the upgrade decision. For Should You Upgrade to DSM 7.4?, record the dsm-upgrade path baseline before action. When checking legacy models deserve extra caution, compare the dsm-upgrade path result with that earlier dsm-upgrade path baseline.

Before buying hardware for legacy models deserve extra caution, decide whether the dsm-upgrade path target is capacity, redundancy or availability; verify the resulting dsm-upgrade path outcome directly.

Security fixes push in favor of staying current

Should You Upgrade to DSM 7.4? planning can fail here because the release includes security fixes, so delaying forever also carries risk; the goal is controlled updating, not permanent avoidance. For Should You Upgrade to DSM 7.4?, record the dsm-upgrade path baseline before action. When checking security fixes push in favor of staying current, compare the dsm-upgrade path result with that earlier dsm-upgrade path baseline.

In Should You Upgrade to DSM 7.4?, make the dsm-upgrade path step reversible. Back up the dsm-upgrade path state; change one variable for security fixes push in favor of staying current; verify the dsm-upgrade path result before continuing.

Schedule for verification time

A safer Should You Upgrade to DSM 7.4? interpretation starts with one fact: the maintenance window should include post-reboot checks for storage, packages, containers, remote access, backups and UPS behavior rather than ending when DSM shows the login screen. For Should You Upgrade to DSM 7.4?, record the dsm-upgrade path baseline before action. When checking schedule for verification time, compare the dsm-upgrade path result with that earlier dsm-upgrade path baseline.

If a tutorial conflicts with the dsm-upgrade path behavior on Should You Upgrade to DSM 7.4?, stop at schedule for verification time; follow the model-specific Synology instructions for the dsm-upgrade path condition.

Questions people ask

Should You Upgrade to DSM 7.4?: common questions

What is the latest DSM 7.4 version?

Synology currently lists DSM 7.4.1-90080, released July 23, 2026.

For Should You Upgrade to DSM 7.4?, "What is the latest DSM 7.4 version?" depends on the dsm-upgrade path: check the exact DSM build for the dsm-upgrade path, the NAS model, and the current dsm-upgrade path state.

Can I downgrade from DSM 7.4?

Synology states that you cannot downgrade to a previous DSM version after installing DSM 7.4.

For Should You Upgrade to DSM 7.4?, "Can I downgrade from DSM 7.4?" depends on the dsm-upgrade path: check the exact DSM build for the dsm-upgrade path, the NAS model, and the current dsm-upgrade path state.

Should I upgrade immediately?

Not blindly. Verify model support, package compatibility, storage health and backups first.

For Should You Upgrade to DSM 7.4?, "Should I upgrade immediately?" depends on the dsm-upgrade path: check the exact DSM build for the dsm-upgrade path, the NAS model, and the current dsm-upgrade path state.

Does DSM 7.4.1 fix USB issues?

Synology lists fixes for USB UPS recognition and USB devices on certain models after the 7.4 update.

For Should You Upgrade to DSM 7.4?, "Does DSM 7.4.1 fix USB issues?" depends on the dsm-upgrade path: check the exact DSM build for the dsm-upgrade path, the NAS model, and the current dsm-upgrade path state.

Will every NAS receive an automatic update?

No. Synology notes that some models must download the patch manually and some remain on a different suitable version.

For Should You Upgrade to DSM 7.4?, "Will every NAS receive an automatic update?" depends on the dsm-upgrade path: check the exact DSM build for the dsm-upgrade path, the NAS model, and the current dsm-upgrade path state.

Should I stop containers before upgrading?

Plan container downtime and ensure application state is consistent. Whether you stop each service manually depends on the application and maintenance procedure.

For Should You Upgrade to DSM 7.4?, "Should I stop containers before upgrading?" depends on the dsm-upgrade path: check the exact DSM build for the dsm-upgrade path, the NAS model, and the current dsm-upgrade path state.

Do I need a backup if I use RAID?

Yes. RAID availability is not a substitute for a restorable backup before an operating-system upgrade.

For Should You Upgrade to DSM 7.4?, "Do I need a backup if I use RAID?" depends on the dsm-upgrade path: check the exact DSM build for the dsm-upgrade path, the NAS model, and the current dsm-upgrade path state.

What should I test after upgrading?

Storage health, shares, packages, containers, remote access, UPS, scheduled backup and representative restore paths.

For Should You Upgrade to DSM 7.4?, "What should I test after upgrading?" depends on the dsm-upgrade path: check the exact DSM build for the dsm-upgrade path, the NAS model, and the current dsm-upgrade path state.

Is DSM 7.4 the last version for some models?

Yes. Synology lists several older models for which DSM 7.4 is the last upgradable version.

For Should You Upgrade to DSM 7.4?, "Is DSM 7.4 the last version for some models?" depends on the dsm-upgrade path: check the exact DSM build for the dsm-upgrade path, the NAS model, and the current dsm-upgrade path state.

Should a business NAS wait longer than a home NAS?

A business system may use a more conservative validation window because downtime and package compatibility have higher consequences.

For Should You Upgrade to DSM 7.4?, "Should a business NAS wait longer than a home NAS?" depends on the dsm-upgrade path: check the exact DSM build for the dsm-upgrade path, the NAS model, and the current dsm-upgrade path state.

Official references and methodology

Verify the exact model, DSM build and application state

This Should You Upgrade to DSM 7.4? guide uses primary documentation for the dsm-upgrade path. Cloudzat evaluates the dsm-upgrade path capacity, redundancy, deployment and recovery layers separately. Interactive dsm-upgrade path results support planning; final dsm-upgrade path changes need exact model guidance and current upstream documentation.

As an Amazon Associate, Cloudzat may earn from qualifying purchases. Prices, NAS models, drive compatibility, DSM behavior and upstream application requirements can change. Verify the exact DiskStation model, current DSM documentation and application release notes before changing storage pools, replacing drives, exposing network services or upgrading production containers.