About Azure snapshots
NetBackup provides support for incremental snapshots in Azure. NetBackup creates the incremental snapshots for new changes to the disks, since the previous snapshot. 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 as storage, instead of Premium HDD.