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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchTo back up a NAS to cloud storage, create a scheduled, multi-version task in a NAS backup application and choose a cloud destination that the application supports. The steps here are for Synology DSM using Hyper Backup, with Backblaze B2 and Wasabi as documented S3-compatible examples; they are not universal instructions for every NAS brand. A task appearing to run successfully is not proof that you can recover your files, so finish by testing a restore.
What a cloud backup does—and what it does not do
A NAS cloud backup is a separate recovery copy of selected NAS data stored away from the NAS. With Hyper Backup, you can create a data backup task to a supported destination, including cloud services. A configured task can retain multiple versions according to its rotation settings, giving you a way to choose an earlier backup version when recovering files.
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That is different from treating cloud storage as a simple mirror or synchronization target. A mirror is intended to reflect a current state; a versioned backup is configured to preserve historical recovery points. Do not assume that every cloud task retains versions automatically: choose a schedule and a rotation policy for the task, and understand what that policy keeps. A provider’s storage bucket, by itself, does not determine which NAS files are backed up or how many recoverable versions remain.
Hyper Backup can also target destinations other than cloud storage, including another NAS, an external hard drive, and an rsync server. Those can form part of a broader backup plan, but a copy kept only beside the NAS does not serve the same off-site role as a cloud copy.
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Before you configure a task
Decide what needs to be recoverable
Make a list of the shared folders you cannot afford to lose, then determine whether supported packages and system configuration data should be included in the task. The right selection depends on what you need to restore: a folder-focused task may suit recovery of personal or work files, while package or configuration data may matter if you also need to rebuild more of the NAS environment. Check the task’s source-selection options rather than assuming that selecting one folder includes every NAS setting or application.
- Identify the shared folders whose contents need off-site protection.
- Decide whether supported packages and system configuration data belong in the same task or need separate planning.
- Consider what a recovery would look like if the NAS itself were unavailable, not only what you would do after deleting one file.
Choose a compatible destination
Confirm that the destination works with the backup application and that you can obtain its required credentials and endpoint information. The documented examples below use Hyper Backup’s S3 Storage option, but the provider-specific values differ. Neither example establishes that every cloud service is compatible with every NAS application.
Compare destinations on practical setup and recovery questions: whether your NAS application supports the service, which regional endpoint to use, what credentials the task requires, how version rotation is configured, how encryption keys are kept, and how a restore is performed. The documented instructions do not establish a like-for-like comparison of provider pricing, speed, or regional service, so those are not grounds here for declaring one option better.
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Keep the recovery credentials somewhere safe
Provider credentials and any client-side encryption password or key are part of the recovery path. Store them securely in a place separate from the NAS, and make sure an authorized person can find them if the NAS is lost or inaccessible. Backblaze says its application key is displayed only once when created; Wasabi advises recording the client-side encryption password. Do not put live credentials in notes attached to a backup task or expose them in screenshots.
How to back up a Synology NAS to cloud storage
Start in Synology DSM with Hyper Backup. The exact provider-specific setup matters: Backblaze B2 and Wasabi both have documented routes through S3 Storage, but their endpoint and credential details are not interchangeable.
Option 1: Configure Backblaze B2 through S3 Storage
- Prepare the B2 destination. Create a Backblaze B2 bucket and an application key for the backup. Save the application key securely when it is created because Backblaze says it is displayed only once.
- Create a Hyper Backup task. In Hyper Backup, create a Data backup task, then choose Cloud Service > S3 Storage.
- Enter the B2 connection details. Use the custom B2 endpoint, choose Signature Version 4, and enter the key ID, application key, and bucket information required by the task. Use the values for your own B2 setup; do not copy credentials or endpoint values from an unrelated example.
- Select the backup sources. Choose the shared folders and other available sources you intend to protect. Review the selection before proceeding so that important data is not omitted.
- Set the task’s schedule and version rotation. Configure when the task should run and how retained versions should be rotated. A schedule determines when backups are attempted; rotation determines which historical versions remain available.
- Apply the task and inspect its result. Confirm that the configuration is saved and review the task’s status after it runs. A completed task is a useful operational check, but it does not replace a restore test.
Option 2: Configure Wasabi through S3 Storage
The documented Wasabi procedure requires a Wasabi account and bucket, access and secret keys, DSM 6.2 or later, and Hyper Backup 2.1.8 or later. These are the requirements stated for that procedure; verify current compatibility for the DSM and application versions you actually run before relying on it.
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- Prepare the bucket and credentials. Create the Wasabi bucket and obtain the access key and secret key needed by Hyper Backup.
- Start a cloud data backup task. In Hyper Backup, choose the S3 Storage destination and enter the account and bucket details requested by the setup.
- Use the bucket’s regional service URL. Enter the service URL for the region where the bucket is located. Do not substitute a URL for a different region.
- Select the sources. Choose the folders and other supported data that should be included in the task.
- Set a schedule and version rotation policy. Choose a backup schedule and configure retention intentionally so that older versions are kept according to your recovery needs.
- Decide whether to use client-side encryption or compression. These are task options to consider for the particular backup. If client-side encryption is enabled, record its password securely: you will need the required password or key to restore the encrypted task.
- Save the task and review its run status. Confirm the task has been applied and check its status after a run. Plan a test recovery separately.
What to verify in either setup
- The task points to the intended bucket and provider endpoint.
- The selected sources cover the folders, packages, or configuration data you decided to protect.
- The schedule is appropriate for how often the protected data changes and how much recent work you can afford to lose. The cited instructions do not prescribe one schedule for every NAS.
- The rotation setting preserves the historical versions you intend to keep. Do not assume that a particular number of versions or retention period is universal.
- The provider credentials and, if applicable, encryption password are stored separately from the NAS and can be retrieved by someone who may need to perform a recovery.
How to choose a schedule and version rotation policy
Schedule and rotation answer different questions. A schedule controls when Hyper Backup makes or attempts a backup. Rotation controls how historical versions are managed. Select both with the recovery scenario in mind: frequent changes may make recent recovery points more valuable, while a mistaken deletion or unwanted change is only useful to recover from if a suitable earlier version has not been rotated away.
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There is no single retention setting established by the documented setup instructions as suitable for every household or organization. Consider the importance of the data, how often it changes, and how far back you may need to recover. Then choose a policy the task supports and confirm the task continues to run as expected. Avoid assuming that a cloud bucket containing backup data means every earlier version is still available.
How to restore individual files or folders
For a file-level recovery, use the restore interface for the relevant Hyper Backup task. Browse the available versions by timeline, select the files or folders you need, and choose a destination for the restored data. If the task is encrypted, provide the required password or key. Before starting, verify both the version and destination so that you restore the intended copy to the intended location.
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- Open the relevant backup task’s restore interface. Select the task that contains the data you need rather than assuming another task or bucket has the same sources.
- Choose a version. Use the timeline to browse the available backup versions and identify one from before the unwanted deletion or change.
- Select the files or folders. Select only the items needed for a focused recovery, or choose a broader set if that is the recovery you intend.
- Set the restore destination. Choose where the restored files should go. Check the destination carefully, especially if files with the same names already exist.
- Supply the encryption credential if requested. An encrypted task needs its password or key to access the backup for restoration.
- Proceed with the restore and verify the result. Check that the recovered files are present in the chosen destination and are the versions you intended to recover.
Hyper Backup’s restoration documentation also describes restoring from an existing repository, including a downloaded .hbk repository imported from a local folder or USB device. That route can matter when working with an existing repository rather than browsing a task that is already available in the normal restore view. If the repository is encrypted, the required credential still matters.
File restore versus full-system restore
Restoring a few files and restoring a broader system state are different operations. A file or folder restore targets selected items and a chosen destination. A full-system or broader restore can affect more of the NAS and may overwrite data at the destination. Confirm the recovery scope and target before proceeding; do not select a whole-system recovery when you only intend to recover one folder.
Plan for the type of loss you are trying to solve. For an accidental file deletion, first identify the relevant task and version and restore the selected item. For a NAS rebuild or larger incident, determine which backup sources and system data are available and follow the appropriate restoration flow for that scope. The restoration documentation’s existence does not mean every task contains everything required to rebuild a particular NAS.
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Test the restore before you need it
A task configuration and a successful backup run do not establish that your particular files can be recovered. Test a small, noncritical file or folder by restoring it to a separate destination, then check that the recovered content is usable. This confirms that you can locate the task and version, access the repository, provide any required encryption credential, choose a destination, and complete the recovery flow.
Do not test by overwriting a live folder or performing a full-system restore. Keep the first test narrow and use a destination where it cannot replace the only current copy. If the test fails, treat that as a configuration or recovery-path problem to resolve before counting the cloud task as a usable recovery copy.
What if you lose the encryption key or provider credentials?
If a Hyper Backup task uses client-side encryption, the required password or key is needed to restore its contents. Losing that credential can prevent access to the encrypted backup. Wasabi’s guidance specifically advises recording the encryption password. This is why the credential must be available independently of the NAS and not stored only on the device being protected.
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Provider credentials are also needed for the application to access the cloud destination. Backblaze’s application key is shown only once at creation, so save it securely at that point. If a key or password is missing, do not assume the provider or NAS can reconstruct it for you; the documented setup and restore instructions establish the need for these credentials, not a universal recovery method for lost keys.
Optional second copy on an external drive
Synology identifies an external HDD as a possible Hyper Backup destination. A USB drive can provide a local backup copy in addition to an off-site cloud task. Check that the drive is compatible with your NAS and has enough capacity for the data and version history you plan to retain. A drive kept near the NAS can be affected by the same local incident, so it should complement rather than replace the separate cloud copy.
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