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Azure Disk Storage
A high-performance, durable block storage designed to be used with Azure Virtual Machines and Azure VMware Solution.
668 questions
@Ganesh Sivagurunathan Correla Welcome to Microsoft Q&A Forum, Thank you for posting your query here!
When disks are configured in a RAID, the IOPS and throughput are calculated based on the RAID configuration. The exact calculation will depend on the RAID level that's being used, as well as the number and type of disks that are being used.
For example, if you're using RAID 0 with two disks, the IOPS and throughput will be the sum of the IOPS and throughput of each individual disk. If you're using RAID 5 or RAID 6, the IOPS and throughput will depend on the number of disks in the array and the write penalty associated with the RAID level.
Configuring RAID on Premium V2 disks is supported, but keep in mind that the performance of the RAID array will depend on the RAID configuration and the number and type of disks that are being used.
Regarding the Premium SSD v2 pricing, the IOPS are calculated based on the hourly average. If the disks are configured in a RAID, the IOPS will be distributed across multiple disks, which can help to reduce the load on individual disks and prevent the IOPS from exceeding the 3,000 IOPS threshold.
IOPS and throughput of a RAID array will depend on the RAID configuration and the number and type of disks that are being used. It's important to carefully consider the RAID configuration and the number and type of disks that are being used to ensure that you're getting the performance that you need.
Premium SSD v2 IOPS: All Premium SSD v2 disks have a baseline IOPS of 3000 that is free of charge. After 6 GiB, the maximum IOPS a disk can have increases at a rate of 500 per GiB, up to 80,000 IOPS. So an 8 GiB disk can have up to 4,000 IOPS, and a 10 GiB can have up to 5,000 IOPS. To be able to set 80,000 IOPS on a disk, that disk must have at least 160 GiBs. Increasing your IOPS beyond 3000 increases the price of your disk.
Premium SSD v2 throughput: All Premium SSD v2 disks have a baseline throughput of 125 MB/s that is free of charge. After 6 GiB, the maximum throughput that can be set increases by 0.25 MB/s per set IOPS. If a disk has 3,000 IOPS, the max throughput it can set is 750 MB/s. To raise the throughput for this disk beyond 750 MB/s, its IOPS must be increased. For example, if you increased the IOPS to 4,000, then the max throughput that can be set is 1,000. 1,200 MB/s is the maximum throughput supported for disks that have 5,000 IOPS or more. Increasing your throughput beyond 125 increases the price of your disk.
To deploy a Premium SSD v2, see Deploy a Premium SSD v2.
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