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Azure Kubernetes Service
https://azure.github.io/AKS/
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VM wrong cache size #2699

Closed quyet-nguyen closed 2 years ago

quyet-nguyen commented 2 years ago

I'm setting up a new AKS cluster in SEA region and get hit with wrong cache size while trying to create Ephemeral node pool Both Standard_D4d_v5 and Standard_D4ds_v5 report cache size of 0 bytes.

ghost commented 2 years ago

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ghost commented 2 years ago

Triage required from @Azure/aks-pm

phealy commented 2 years ago

This is correct; neither of those VMs have a cache disk. They only have a temporary disk. While regular Azure VMs do support running an ephemeral OS disk on the temp disk by using the DiffDiskPlacement option, that feature is not yet available in AKS and thus these VMs cannot be deployed with ephemeral OS disk at this time.

When you're looking at the VM tables in Azure, they need to show a cache size to support ephemeral OS disk in AKS at this time. Compare the Standard_D8s_v3, which shows a cache size of 200GB (the number in parentheses in the Max cached and temp storage throughput column).

Please see #2672 for further updates on when DiffDiskPlacement will be available in AKS.

ghost commented 2 years ago

This issue has been marked as duplicate and has not had any activity for 1 day. It will be closed for housekeeping purposes.