NetApp BlueXP backup and recovery is designed to protect data from on-premises ONTAP clusters by creating copies in cloud object storage, such as Microsoft Azure Blob. The service directly supports the backup of fundamental ONTAP data constructs. This includes ONTAP volumes, which contain file-based (NFS/SMB) and block-based (LUN) data. Additionally, BlueXP backup and recovery explicitly supports backing up data stored in ONTAP S3 buckets, which serve object data directly from the on-premises cluster. These two represent the primary, native data sources on an ONTAP system that can be targeted for backup to the cloud.

A. Microsoft SQL Server: While BlueXP can create application-consistent backups for SQL Server, it does so by protecting the underlying ONTAP volume where the database resides, making the volume the direct data source.

C. Microsoft Azure Stack: Microsoft Azure Stack is a hybrid cloud platform. It is a potential deployment location for infrastructure, not a data source residing on a separate on-premises ONTAP system.

1. NetApp BlueXP Documentation, "Learn about backing up ONTAP data": This document states, "BlueXP backup and recovery enables you to back up data from your on-premises ONTAP clusters and from your Cloud Volumes ONTAP systems to low-cost object storage in AWS, Azure, and Google Cloud... You can back up volumes from your on-premises ONTAP clusters..." This directly supports the backup of NetApp ONTAP volume data (B).

Source: NetApp BlueXP backup and recovery documentation, concept-backup-ontap.html.

2. NetApp BlueXP Documentation, "Back up ONTAP S3 data": This guide explicitly details the procedure for protecting ONTAP S3 data. It states, "You can use BlueXP backup and recovery to back up and restore data from ONTAP S3 buckets on your on-premises ONTAP clusters to object storage in the cloud or on premises." This directly supports the backup of NetApp ONTAP S3 data (D).

Source: NetApp BlueXP backup and recovery documentation, task-backup-s3-data.html.

3. NetApp BlueXP Documentation, "Learn about application-aware data protection": This reference explains that for applications like Microsoft SQL Server, BlueXP "creates an application-consistent snapshot of the volumes used by the application." This clarifies that the volume is the source being backed up, making option A an indirect answer compared to the more fundamental source in option B.

Source: NetApp BlueXP backup and recovery documentation, concept-app-aware-backup.html.