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Copy file name to clipboardExpand all lines: articles/virtual-machines/disks-types.md
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@@ -3,7 +3,7 @@ title: Select a disk type for Azure IaaS VMs - managed disks
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description: Learn about the available Azure disk types for virtual machines, including ultra disks, Premium SSDs v2, Premium SSDs, standard SSDs, and Standard HDDs.
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author: roygara
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ms.author: rogarana
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ms.date: 07/12/2023
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ms.date: 08/17/2023
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ms.topic: conceptual
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ms.service: azure-disk-storage
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ms.custom: references_regions, ignite-2022
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## Premium SSDs
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Azure Premium SSDs deliver high-performance and low-latency disk support for virtual machines (VMs) with input/output (IO)-intensive workloads. To take advantage of the speed and performance of Premium SSDs, you can migrate existing VM disks to Premium SSDs. Premium SSDs are suitable for mission-critical production applications, but you can use them only with compatible VM series. Premium SSDs only supports 512E sector size.
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Azure Premium SSDs deliver high-performance and low-latency disk support for virtual machines (VMs) with input/output (IO)-intensive workloads. To take advantage of the speed and performance of Premium SSDs, you can migrate existing VM disks to Premium SSDs. Premium SSDs are suitable for mission-critical production applications, but you can use them only with compatible VM series. Premium SSDs support the [512E sector size](https://en.wikipedia.org/wiki/Advanced_Format#512_emulation_(512e)).
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To learn more about individual Azure VM types and sizes for Windows or Linux, including size compatibility for premium storage, see [Sizes for virtual machines in Azure](sizes.md). You'll need to check each individual VM size article to determine if it's premium storage-compatible.
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## Standard SSDs
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Azure standard SSDs are optimized for workloads that need consistent performance at lower IOPS levels. They're an especially good choice for customers with varying workloads supported by on-premises hard disk drive (HDD) solutions. Compared to standard HDDs, standard SSDs deliver better availability, consistency, reliability, and latency. Standard SSDs are suitable for web servers, low IOPS application servers, lightly used enterprise applications, and non-production workloads. Like standard HDDs, standard SSDs are available on all Azure VMs. Standard SSD only supports 512E sector size.
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Azure standard SSDs are optimized for workloads that need consistent performance at lower IOPS levels. They're an especially good choice for customers with varying workloads supported by on-premises hard disk drive (HDD) solutions. Compared to standard HDDs, standard SSDs deliver better availability, consistency, reliability, and latency. Standard SSDs are suitable for web servers, low IOPS application servers, lightly used enterprise applications, and non-production workloads. Like standard HDDs, standard SSDs are available on all Azure VMs. Standard SSDs support the [512E sector size](https://en.wikipedia.org/wiki/Advanced_Format#512_emulation_(512e)).
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### Standard SSD size
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## Standard HDDs
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Azure standard HDDs deliver reliable, low-cost disk support for VMs running latency-tolerant workloads. With standard storage, your data is stored on HDDs, and performance may vary more widely than that of SSD-based disks. Standard HDDs are designed to deliver write latencies of less than 10 ms and read latencies of less than 20 ms for most IO operations. Actual performance may vary depending on IO size and workload pattern, however. When working with VMs, you can use standard HDD disks for dev/test scenarios and less critical workloads. Standard HDDs are available in all Azure regions and can be used with all Azure VMs. Standard HDDs only supports 512E sector size.
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Azure standard HDDs deliver reliable, low-cost disk support for VMs running latency-tolerant workloads. With standard storage, your data is stored on HDDs, and performance may vary more widely than that of SSD-based disks. Standard HDDs are designed to deliver write latencies of less than 10 ms and read latencies of less than 20 ms for most IO operations. Actual performance may vary depending on IO size and workload pattern, however. When working with VMs, you can use standard HDD disks for dev/test scenarios and less critical workloads. Standard HDDs are available in all Azure regions and can be used with all Azure VMs. Standard HDDs support the [512E sector size](https://en.wikipedia.org/wiki/Advanced_Format#512_emulation_(512e)).
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