About Azure Stack Hub snapshots
NetBackup provides support for incremental snapshots in Azure Stack Hub. NetBackup makes use of incremental snapshots capability provided by Azure Stack Hub to store only the changed blocks between snapshots. The snapshots are independent of each other, for example, deletion of one snapshot, does not affect the subsequent snapshot that NetBackup creates. The incremental snapshots significantly reduce the cost of backup by reducing the required disk space, and using the Azure Standard HDD/Premium HDD as storage.
Note:
Premium disks (SSD) and standard disks (HDD) are backed by the same storage infrastructure in Azure Stack Hub. They provide the same performance.