Managed Disk: In Managed disk storage accounts creation/Management done on the backend. It will help you with the scalability of storage accounts and backed by Standard/premium Tires.
Unmanaged Disk: Unmanaged disks are the disk in which you will create the storage accounts. Create the disk and Managed it by you and you need to make sure you can’t exceed the Storage limit up 20K IOPS while adding many disks which may throttle the VMs performance.
