Recovery Services vault limit increased to 500 vaults per subscription per region
Updated: April 17, 2018
Scale limits for Azure Backup have been increased. Users can now create as many as 500 Azure Recovery Services vaults in each subscription per region. Also, the number of Azure virtual machines that can be registered against each vault has increased to 1,000, from an earlier limit of 200 machines under each vault.
For more information, see the full blog post.