Comparison of Azure Managed Disk types

Annotated comparison table derived from official Azure documentation -
Ultra disk Premium SSD Standard SSD Standard HDD
Disk type SSD SSD SSD HDD
Scenario IO-intensive workloads such as SAP HANA, top tier databases (for example, SQL, Oracle), and other transaction-heavy workloads. Production and performance sensitive workloads Web servers, lightly used enterprise applications and dev/test


 Backup, non-critical, infrequent access
Max disk size 65,536 gibibyte (GiB)
Range - Fixed sizes from 4 GiB up to 64 TiB		 32,767 GiB 32,767 GiB 32,767 GiB
Max throughput 2,000 MiB/s
Range - 256 KiB/s for each provisioned IOPS to 2000 MBps per disk		 900 MiB/s 750 MiB/s 500 MiB/s
Max IOPS 160,000
Range - 300 IOPS/GiB to 160 K IOPS per disk		 20,000 6,000 2,000
Notes

 Outbound data transfers (data going out of Azure data centers) incur billing for bandwidth usage		 Some of the current limitations:
- Supported only in regions
- Can only be used with availability zones (availability sets and single VM deployments outside of zones will not have the ability to attach an ultra disk)
- Are only supported on ES/DS v3 VMs


* Can only be used as data disks
* Ultra disk VM reservation fee if ultra disk capability is enabled but ultra disk  not attached		 - Can only be used with VM series that are premium storage-compatible. - Like standard HDDs, standard SSDs are available on all Azure VMs
Also see - A Review of Azure Services through Comparison Charts & Summary Tables

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