Azure Temporary Storage Drive throughput

Question

We have application where we are using Azure Windows VM with Premium disks. Our application creates lot of temporary files. We want the best read/write performance for these files. We are trying to figure out what to use for these temporary files,

1 - Premium disk
2 - Temporary storage drive
3 - RAM Drive (Use a utility that will create a drive utilizing a portion of VM's RAM

Various Azure Premium Disks ratings is available on Azure documentation. But there is no information available on throughput of the temporary storage drive. Can someone provide this information and if it is dependent upon VM - we are using several VMs, M series and E Series.

Thank You.

Answer 1

@ajaynshah We will not provide performance metrics on temp drive has it varies with every VM size. Hence it's not been documented and since temp drive are provided to VMs, from underlying compute machine itself the read/write operations will be fast. However it can't be expanded or increased based on requirement. You may have to increase the size of VMs if you need more temp drive space and if that temporary files are important, then you need to go for premium disks as it provide persistent data.
About temporary files, we are not sure what duration is temporary for your VMs.
Note: If 2-3 hours of data is temporary for you and if any VM crash happens redeploying VM, those files are gone

Hope this helps!

Kindly let us know if the above helps or you need further assistance on this issue.

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Answer 2

@a Firstly apologies for delay in responding here! M-series offers a high vCPU count (up to 128 vCPUs) and a large amount of memory (up to 3.8 TiB). It's also ideal for extremely large databases or other applications that benefit from high vCPU counts and large amounts of memory.

The Mv2-series offers the highest vCPU count (up to 416 vCPUs) and largest memory (up to 11.4 TiB) of any VM in the cloud. It's ideal for extremely large databases or other applications that benefit from high vCPU counts and large amounts of memory.

High performance computing VM sizes

For any temporary drive we not provide performance metric,

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Answer 3

Someone provided an answer that makes sense here...https://dba.stackexchange.com/questions/279640/azure-virtual-machine-local-temp-storage-d-drive-how-much-iops-it-can-han/279648#279648