Azure Premium Storage is a solid-state drive (SSD)–based storage solution designed to support I/O-intensive workloads. With Premium Storage, you can add up to 64 TB of persistent storage per virtual machine (VM), with more than 80,000 IOPS per VM and extremely low latencies for read operations.
Offering an SLA for 99.9 percent availability, Premium Storage is now available in the South Central US region, in addition to the other regions previously announced
For more information, visit the Premium Storage
page, and for more information about pricing, visit the Azure Storage Pricing