3/28/2023 0 Comments Disk map size![]() The minimum guaranteed IOPS per disk are 1 IOPS/GiB, with an overall baseline minimum of 100 IOPS. Ultra disks with greater IOPS can be used as shared disks to support multiple VMs. The current maximum limit for IOPS for a single VM in generally available sizes is 80,000. To achieve the target IOPS for the disk, ensure that the selected disk IOPS are less than the VM IOPS limit. Ultra disks support IOPS limits of 300 IOPS/GiB, up to a maximum of 160,000 IOPS per disk. Ultra disks come in several fixed sizes, ranging from 4 GiB up to 64 TiB. Ultra disks feature a flexible performance configuration model that allows you to independently configure IOPS and throughput both before and after you provision the disk. Ultra disks are designed to provide submillisecond latencies and target IOPS and throughput described in the preceding table 99.99% of the time. Disk Size (GiB)ġ,024-65,536 (sizes in this range increasing in increments of 1 TiB) The following table provides a comparison of disk sizes and performance caps to help you decide which to use. To request an increase in capacity, request a quota increase or contact Azure Support. Ultra disk sizeĪzure ultra disks offer up to 32-TiB per region per subscription by default, but ultra disks support higher capacity by request. You should use Premium solid-state drives (SSDs) as operating system (OS) disks. Ultra disks must be used as data disks and can only be created as empty disks. Ultra disks are suited for data-intensive workloads such as SAP HANA, top-tier databases, and transaction-heavy workloads. You can change the performance parameters of an ultra disk without having to restart your VMs. Web servers, lightly used enterprise applications and dev/testĪzure ultra disks are the highest-performing storage option for Azure virtual machines (VMs). Production and performance sensitive workloads Production and performance-sensitive workloads that consistently require low latency and high IOPS and throughput ![]() IO-intensive workloads such as SAP HANA, top tier databases (for example, SQL, Oracle), and other transaction-heavy workloads. The following table provides a comparison of the five disk types to help you decide which to use. Applies to: ✔️ Linux VMs ✔️ Windows VMs ✔️ Flexible scale sets ✔️ Uniform scale setsĪzure managed disks currently offers five disk types, each intended to address a specific customer scenario: ![]()
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