CODEWITHSUNDEEP
azureazure-blob-storage
Mihai Albert
Mihai Albert

Reputation: 1483

Lower disk sizes in Azure with high IOPS

If one looks at the pricing tiers for disks in Azure storage (Premium SSDs one below as of today for the East US region), the higher the IOPS offered the higher the disk size.

One can choose a higher performance tier but use a lower disk size (although it won't make much sense probably, as you'd still be paying for the respective tier and corresponding size). But why isn't there an option to get a small disk (e.g. 32 GB) with a high number of IOPS?

In another words, why is there this forced correlation between disk size and IOPS?

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Upvotes: 2

Views: 390

Answers (1)

David Browne - Microsoft
David Browne - Microsoft

Reputation: 89111

But why isn't there an option to get a small disk (e.g. 32 GB) with a high number of IOPS?

For most storage technologies IOPS and Size are linked, and premium storage offers provisioned IOPS. Conceptually* a P4 is just 1/32nd of a P30, and you can't allow a P4 to use more than 1/32nd of the available IOPS without degrading the performance of the other small disks that share the storage.

*The actual implementation is probably more complex.

Upvotes: 2

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