Active Backup for Office 365

Take complete control over Office 365 data with an on-premises backup solution to protect your data in OneDrive for Business, email, contacts and calendar.

Comprehensive Office 365 backup 

Back up your Office 365 mail, contacts, calendar, and OneDrive for Business with this on-premise solution.

Drive data protection

Drive data and the corresponding metadata, such as last modified time and sharing permissions, are both supported for backup.

Mail protection

Backed up data stored in a wide variety of Office 365 mailboxes, such as personal, shared, along with their folders, folder structures, and attachments.

Contacts protection

Customer and partner relationships are key to business success. By backing up the contacts on Office 365, Active Backup for Office 365 helps reduce the risk of losing such assets.

Calendar protection

More often than not, data is deleted only for us to realize that it’s still needed, so start backing up your business events in Office 365 calendars now for unexpected needs.

Fear license fee no more

Free your business from license fees. Select an ideal Synology NAS to back up unlimited user accounts, as long as storage capacity allows – completely free of licenses.

Your responsibility

There is a common misunderstanding that data is backed up once stored to Office 365, but in fact, Microsoft only provides hardware infrastructure and related services.

Protect your intellectual assets

When it comes to data security, businesses should take full responsibility to control their precious data and protect against human errors or malicious attacks.

Hold data for compliance and legal purposes

With industry regulations in place, organization often face the challenge of data retention. On the long run, however, the space storage needed could incur significant costs.

Optimize the process for data restoration

As data on Office 365 might take considerable time and effort to restore, it is crucial to enhance restoration efficiency and minimize work disruption.

Your NAS, your control

Businesses can enable continuous backup to minimize the risk of data loss while flexibly preserving backup versions by setting a specific time period for file retention.

Continuous backup 

Continuous backup allows businesses to back up users' services continuously, thereby minimizing the risk of data loss.

Flexible file versioning 

If changes are made, data will be backed up. When a backed-up file is updated to a new version, its previous version will be preserved for the period of time you set for file retention, so that at least the previous version will be available for restoration.

Smart restoration

With Active Backup for Office 365 Portal enabled, both employees and admins can easily locate items for restoration and restore/export them with simple clicks.

  • Granular restoration 

    Facilitate the restoration process by restoring a single file along with its metadata, email, email attachment, contact, or calendar event instead of an entire backup task.

  • Content search

    Content search helps filter out any email, mail attachment, contact, or calendar that contains search keywords instantly so that you don’t have to look through piles of backup data.

  • Data preview

    Users can preview the content of an email or the detailed info of any contact before executing restoration to avoid restoring wrong items.

  • Data export

    Mail, contacts, and calendar data can be exported in the eml, csv, and isc format respectively, while drive data and mail attachments can be exported in Office file formats.

Management  redefined

The added support for mail, contacts, and calendar services doesn't necessarily mean more time spent on data management. With the dashboard redesigned and the account discovery feature enriched, admins can monitor and manage backup tasks effortlessly, no matter how many domains are set to be backed up.

  • Centralized dashboard 

    The redesigned dashboard enables IT admins to monitor real-time and historical protection of mail, contacts, calendar, and drive services, storage consumption by each service and top users, as well as data transmission history from a single interface.
  • Account discovery 

    Apart from drive data, account discovery is also supported for mail, contacts, and calendar services now. With this feature turned on, users with any of the aforementioned services enabled on Office 365 will be automatically detected and selected for backup, which saves admins the trouble of manual setup.
  • Login with Office 365 accounts

    Join your Synology NAS as an SSO client to Microsoft Azure AD, and employees can log into the self-restore portal simply with their Office 365 account. Learn more

Storage efficiency

Synology's advanced storage technologies enable businesses to keep  the most data while using the least storage space.

  • Single instancing

    Mail/calendar attachments (if stored in Btrfs volumes) and OneDrive files that contain identical content will only be stored to Synology NAS once, which saves storage space.
  • Block-level deduplication

    Files stored in Btrfs volumes on Synology NAS can be deduplicated with previous versions, minimizing the storage space required.


  • Which Office 365 platform services are supported?

      Office 365, Office 365 Germany, and Office 365 operated by 21 Vianet are supported.

    Which Office 365 plans are supported?

      Business, Enterprise, and Education, and Exchange Online are supported.

    Which Office 365 mailboxes are supported for backup?

      Office 365 personal, shared, room, and equipment mailboxes are supported.

    Are there any NAS limitations or requirements?

      Yes, a NAS device running DSM 6.1-15217 or above is required and only x64 Synology NAS servers and the Btrfs file system are supported (if using deduplication technology). Find compatible models here.

    Is Microsoft SharePoint supported for backup?

      SharePoint Online is in beta now. To join the beta program, please refer to this page.

    Can I back up Active Backup for Office 365 data to another device to have a second copy?

      The backup copy feature is not supported at this time, but it is in out roadmap.

    DSM accounts have to match Office 365 accounts in order to allow backup users to log in to the Active Backup for Office 365 Portal. How to efficiently add Office 365 accounts to a Synology NAS?

      Synology NAS supports Microsoft Azure Active Directory, allowing businesses to efficiently add Office 365 accounts to a Synology NAS.

    Are there any license requirements or maximum account limits?

      No, it's completely license-free without limits to the maximum number of accounts. However, if the number exceeds 500, we recommend you reach out to our sales team for a consultation.

Watch the video

Learn how to create Office 365 & G Suite backup tasks & restore data easily.

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