Managed disk type on solid-state storage aimed at production and IO-heavy work, such as SQL Server data and log files. For example, a P50 gives 7,500 IOPS and a P60 gives 16,000.
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Terms in this definition
- General-purpose v1
The older storage account kind (
Storage), which lacks access tiers, Archive and premium file shares and retires on 13 October 2026. Converting to ZRS requires first upgrading to GPv2, a one-way change. - SQL Server
The relational database from Microsoft that organisations host and run themselves, in their own data centres or on VMs. Its engine also sits underneath the Azure SQL services and SQL database in Fabric.
- IOPS
Input/output operations per second measure how fast a disk performs; a P50 disk, for instance, offers 7,500.
Related terms
- FileStorage
Storage account kind on premium SSD dedicated to Azure Files, supporting only ZRS or LRS redundancy.
- Performance tier
Choice made when a storage account is created and not changeable afterwards: Standard (HDD-based GPv2) or Premium (SSD) for latency and throughput. To cut costs for cold data, change the access tier instead.
- Premium SSD ZRS
Variant of Premium SSD that writes synchronously to three availability zones so the disk survives the loss of a datacentre. Ultra Disk and Premium SSD v2 do not offer it.
- Standard SSD
Managed disk with a ceiling of 6,000 IOPS, sitting below Premium SSD in performance.
- Write Accelerator
Available only on M-series VMs, this option for Premium SSD disks reduces write latency for database logs. Disks using it don't support ADE.