Merge pull request #281619 from roygara/ultraClarity

Clarifying Ultra Disk Sizes

Author: prmerger-automator[bot]

articles/virtual-machines/disks-types.md

@@ -3,7 +3,7 @@ title: Select a disk type for Azure IaaS VMs - managed disks
 description: Learn about the available Azure disk types for virtual machines, including Ultra Disks, Premium SSDs v2, Premium SSDs, standard SSDs, and Standard HDDs.
 author: roygara
 ms.author: rogarana
-ms.date: 08/06/2024
+ms.date: 08/12/2024
 ms.topic: conceptual
 ms.service: azure-disk-storage
 ms.custom: references_regions
@@ -52,6 +52,8 @@ Ultra disks must be used as data disks and can only be created as empty disks. Y
 
 Ultra Disks offer up to 100 TiB per region per subscription by default, but Ultra Disks support higher capacity by request. To request an increase in capacity, request a quota increase or contact Azure Support.
 
+Ultra Disk sizes work like Premium SSD, Standard SSD, and Standard HDD sizes. When you create or modify an Ultra Disk, the size you set is billed as the next largest provisioned disk size. So if you were to deploy a 200 GiB Ultra Disk or set a 200 GiB Ultra Disk, you'll have a 200 GiB Ultra Disk that's billed as if it was 256 GiB, since that's the next largest provisioned disk size.
+
 The following table provides a comparison of disk sizes and performance caps to help you decide which to use.
 
 |Disk Size (GiB)  |IOPS Cap  |Throughput Cap (MB/s)  |

articles/virtual-machines/disks-understand-billing.md

@@ -3,7 +3,7 @@ title: Understand Azure Disk Storage billing
 description: Learn about the billing factors that affect Azure managed disks, including ultra disks, Premium SSDs v2, Premium SSDs, standard SSDs, and Standard HDDs.
 author: roygara
 ms.author: rogarana
-ms.date: 03/08/2024
+ms.date: 08/12/2024
 ms.topic: conceptual
 ms.service: azure-disk-storage
 ---
@@ -20,11 +20,13 @@ There are two kinds of snapshots offered for Azure managed disks: Full snapshots
 
 ## Ultra Disks
 
-The price of an Azure Ultra Disk is determined by the combination of how large the disk is (its size) and what performance you select (IOPS and throughput) for your disk. If you share an Ultra Disk between multiple VMs that can affect its price as well. The following sections focus on these factors as they relate to the price of your Ultra Disk. For more information on how these factors work, see the [Ultra disks](disks-types.md#ultra-disks) section of the [Azure managed disk types](disks-types.md) article.
+The price of an Azure Ultra Disk is determined by the combination of how large the disk is (its disk size) and what performance you select (IOPS and throughput) for your disk. If you share an Ultra Disk between multiple VMs that can affect its price as well. The following sections focus on these factors as they relate to the price of your Ultra Disk. For more information on how these factors work, see the [Ultra disks](disks-types.md#ultra-disks) section of the [Azure managed disk types](disks-types.md) article.
 
 ### Ultra Disk size
 
-The size of your Ultra Disk also determines what performance caps your disk has. You have granular control of how much IOPS and throughput your disk has, up to that size's performance cap. Pricing increases as you increase your disk's size, and when you set higher IOPS and throughput. Ultra Disks offer up to 32 TiB per region per subscription by default, but support higher size by request. To request an increase in size, request a quota increase or contact Azure Support. 
+Ultra Disk sizes work like Premium SSD, Standard SSD, and Standard HDD sizes. When you create or modify an Ultra Disk, the size you set is billed as the next largest provisioned disk size. So if you were to deploy a 200 GiB Ultra Disk or set a 200 GiB Ultra Disk, you'll have a 200 GiB Ultra Disk that's billed as if it was 256 GiB, since that's the next largest provisioned disk size.
+
+The disk size of your Ultra Disk also determines what performance caps your disk has. You have granular control of how much IOPS and throughput your disk has, up to that size's performance cap. Pricing increases as you increase your disk's size, and when you set higher IOPS and throughput. Ultra Disks offer up to 32 TiB per region per subscription by default, but support higher size by request. To request an increase in size, request a quota increase or contact Azure Support. 
 
 The following table outlines the available disk sizes and performance caps. Pricing increases as you increase in size.