c.f.

Azure in Plain English

Overview

My notes on Azure, with particular reference to ARM and networking. Based on conversation with Russell Seymore (ASOS, now Chef) & Satheesh ThrikovilChandrasekharan (Microsoft).

Serverless

Azure Cosmos DB

Azure Resource Manager / ARM

Using C Sharp

Azure CLI meets Linux

Azure Networking

3rd Party

Training Courses

Microsoft Acadamy

Books


Name Cores Memory (GB) Local SSD Size (GB) Local SSD Max IOPS Local SSD Max Read MB/s Local SSD Max Write MB/s
Standard_D1 1 3.5 50 3,000 48 24
Standard_D2 2 7 100 6,000 96 48
Standard_D3 4 14 200 12,000 192 96
Standard_D4 8 28 400 24,000 384 192
Standard_D11 2 14 100 6,000 96 48
Standard_D12 4 28 200 12,000 192 96
Standard_D13 8 56 400 24,000 384 192
Standard_D14 16 112 800 48,000 768 384

IO Operations are limited by either Max IOPs or the Max Read/Write throughput (MB/s), whichever they hit first (for mixed workloads a write effectively counts double against the read limit). Small IO sizes will typically max out on IOPS before hitting bandwidth limits, while large IO sizes will typically max out on bandwidth before hitting IOPS limits.

Note that Max IOPS and maximum disk throughput limits apply only to the local SSD. OS, Data Disks, and Azure File persistent storage performance levels are described in the Azure Storage Scalability and Performance Targets document. Subscripition based limits are desribed in Azure Subscription Service Limits.

References

  • https://azure.microsoft.com/en-us/documentation/articles/storage-scalability-targets/
  • https://azure.microsoft.com/en-us/documentation/articles/virtual-machines-size-specs/
  • https://azure.microsoft.com/en-us/documentation/articles/cloud-services-sizes-specs/
  • http://www.virtualizationadmin.com/articles-tutorials/cloud-computing/microsoft/overview-virtual-machine-offerings-microsoft-azure.html
  • http://sqlperformance.com/2014/05/io-subsystem/comparing-azure-vm-performance
  • http://blogs.msdn.com/b/igorpag/archive/2014/11/11/azure-a_2d00_series-and-d_2d00_series-consistent-performances-and-size-change-considerations.aspx
  • https://azure.microsoft.com/en-us/blog/new-d-series-virtual-machine-sizes/
  • http://azure.microsoft.com/en-us/blog/d-series-performance-expectations/ «
  • http://windowsitpro.com/azure/azure-vm-network-egress-speeds «