From Domino 12.0.2, Domino VSS Writer was provided , we can do Snapshot backups with the following document
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Volume Shadow Copy Service (VSS) writer
https://help.hcl-software.com/domino/14.0.0/admin/admn_vsssnapshots.html?scLang=en
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But this document does not mentioned the list of 3rd party backup applications which are tested and supported except for Veeam.
We know Veeam was fully tested supported, and also restore script was also provided on
https://opensource.hcltechsw.com/domino-backup/backup-providers/veeam/
So please verify other 3rd party backup applications, publish the results, and provide related scripts if it is needed.
This customer also has the following requests:
Windows Server Backup relies on the same VSS infrastructure and is designed to interact with any properly registered VSS Writer on the system. For this reason, we believe that confirming the expected behavior and compatibility of the Domino VSS Writer with the Windows Server backup service should take precedence over evaluating third‑party backup solutions.
Please consider to add the following description in the following Domino 14.x document
https://help.hcl-software.com/domino/14.0.0/admin/admn_vsssnapshots.html
Description in Japanese:
Domino が提供する VSS Writer は Windows 標準の VSS フレームワークに準拠していますが、動作検証を行っているのは Veeam などの特定のサードパーティ製品のみです。そのため、Windows Server バックアップ(WindowsBackupService)を含む他のバックアップアプリケーションとの動作保証は行っておりません。Veeam 以外のバックアップアプリケーションを使用する場合は、お客様の責任において連携・ご利用いただく必要があります。
Description in English:
While the VSS Writer provided by Domino complies with the standard Windows VSS framework, its operation has been verified only with specific third-party products, such as Veeam. Consequently, operation is not guaranteed with other backup applications, including Windows Server Backup (Windows Backup Service). If you choose to use a backup application other than Veeam, you do so at your own responsibility.
Thanks!
We can not test every backup vendor. The list of backup providers is intentionally published as a github repo in order to allow ANYONE (=e.g. you!) to contribute to the list.