NAS SETUP, MAINTENANCE & RECOVERY
Hyper Backup Explorer is useful when you need files from a Synology backup without restoring them over the live NAS. The important preparation is access to the complete repository, the correct recovery credentials and a separate destination with enough space. Treat the backup as a structured archive rather than a folder of ordinary documents that can be rearranged by hand.
Quick answer
Install Hyper Backup Explorer from Synology, make the supported backup repository accessible to the computer, and choose Browse Local Backup. Open the appropriate backup entry, unlock it if encrypted, select the required version and copy files to a separate folder. Verify the recovered contents and permissions. C2 Storage has its own recommended C2 Storage Explorer route.
Steps to follow
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Identify the backup and preserve its structure
Record which Hyper Backup task created the repository, its destination and the approximate date of the wanted version. A multi-version backup commonly uses the
.hbkrepository format. Keep its internal files and directory structure intact. Do not rename components or extract a few apparently important database files and expect the desktop tool to reconstruct the rest.If the repository resides on removable storage, connect it through a supported filesystem and confirm it can be read without modifying it. If it is remote, establish the supported way to make the complete required repository available. Do not assume every cloud destination can be browsed directly by the desktop tool. Check capacity and retrieval time before beginning a large download.
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Obtain the tool and recovery credentials
Download the supported desktop utility from Synology's Download Center for the relevant platform. Keep the backup password or exported encryption key available through a protected route separate from the failed NAS. If the repository is encrypted, its files are not made readable merely by installing the explorer. The correct decryption material remains necessary.
Avoid posting a repository, key or configuration archive publicly when requesting help. If the NAS is unavailable, use another trusted computer and an account appropriate for the sensitivity of the recovered files. A shared household or office computer may leave copies in downloads or temporary folders, so choose the recovery location and access permissions deliberately.
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Open the repository and select the required version
Launch Hyper Backup Explorer and choose Browse Local Backup. Follow the current platform instructions to open the backup entry; Synology's current retrieval guide uses the
.hbkbackup, while older tool documentation can refer to an index entry within the repository. Select the entry the installed tool expects and preserve the surrounding structure rather than renaming files to match an old screenshot.Enter the supported password or key if prompted. Use the version calendar or navigation controls to choose the recovery point before looking for the file. The newest backup is not always the desired one: an accidental overwrite may already be included there. Record the selected version date so the recovered item has a clear origin.
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Copy out and verify without overwriting current work
Use Copy to or the platform's supported extraction action to place the selected files in a new recovery folder. Keep it separate from the current working directory until the contents have been checked. For a large recovery, begin with one representative file and confirm it opens in the intended application before committing to the whole selection.
Compare content, timestamps and the expected version. Check permissions on the extracted copy before placing it back into a shared location: ordinary download or copy-out workflows do not necessarily preserve the original NAS access rules. If the file belongs to an application database or a linked project, verify its dependent files too. A successful extraction message is not proof that every application can use the result correctly.
Detailed guidance
Desktop extraction and full restoration serve different purposes
Explorer is suited to browsing retained versions and retrieving files. A full restoration of NAS settings, supported packages or service state uses the relevant Hyper Backup recovery workflow and compatibility requirements. Do not assume that copying an application's internal folder to a new computer recreates the running service, accounts or database configuration.
For a missing document, extraction to a separate folder is a straightforward way to inspect an older version safely. For a complete NAS failure, create a broader recovery plan covering compatible hardware or software, users, permissions, packages and data. Keep the file-level recovery step within that plan rather than treating it as a substitute for every other component.
Cloud repositories need a tested access route
Hyper Backup supports several destinations, but recovery from each can involve different tools and prerequisites. Synology recommends C2 Storage Explorer for accessing and downloading C2 Storage backup data. For another provider, check the supported Hyper Backup or repository-download workflow instead of assuming that the desktop explorer accepts any cloud login directly.
Estimate both the available local space and the network time needed to retrieve data. A repository containing many versions can be larger than the small set of files you want. Where a supported remote browsing or relinking method avoids an unnecessary full download, evaluate it carefully and preserve the original backup. Test the chosen route before an outage makes time pressure part of the decision.
Missing versions and errors require evidence
If a desired version is absent, inspect the task's retention policy and history when available. A backup cannot return a version that was never completed or has already been removed by retention. Check that you opened the correct repository and task before assuming corruption. Similar task names or copied archives can make this easy to confuse.
If Explorer reports damage or cannot open the backup, preserve the original and record the exact message, tool version and storage path. Avoid editing repository internals or deleting unfamiliar files to make it open. Use supported integrity checks and vendor guidance with a protected copy where appropriate. Maintaining the original structure leaves more recovery options available.
Compare the options
| Situation | Recommended action | Check before continuing |
|---|---|---|
| Need one older document | Select its version and copy to a separate folder | Open and compare the recovered contents |
| Encrypted repository will not open | Locate the correct password or exported key | The utility cannot bypass missing encryption material |
| Backup is on C2 Storage | Use the recommended C2 Storage Explorer route | Do not assume every cloud works as a local repository |
| Need complete NAS service recovery | Plan the supported Hyper Backup restoration workflow | File extraction does not recreate every setting or package |
Frequently asked questions
Can I rename files inside an hbk repository?
Avoid manual changes. The archive has an internal structure used by Hyper Backup tools, and renaming components can break browsing or relinking. Preserve the repository and use supported recovery controls.
Will extracted files retain their original access permissions?
Do not assume that. Synology notes that copy or download retrieval can lose the original permission settings. Check the recovered destination and apply the intended access rules before returning sensitive files to a shared location.
Official documentation
This guide combines current official documentation with practical recovery checks. It does not claim hands-on testing of your installation. Menu labels and supported procedures can vary by release; follow the documentation for your installed version.