General purpose

The A-series and Av2-series VMs can be deployed on a variety of hardware types and processors. The size is throttled, based upon the hardware, to offer consistent processor performance for the running instance, regardless of the hardware it is deployed on. To determine the physical hardware on which this size is deployed, query the virtual hardware from within the Virtual Machine.

D-series VMs are designed to run applications that demand higher compute power and temporary disk performance. D-series VMs provide faster processors, a higher memory-to-core ratio, and a solid-state drive (SSD) for the temporary disk. For details, see the announcement on the Azure blog, New D-Series Virtual Machine Sizes.

Dv2-series, a follow-on to the original D-series, features a more powerful CPU. The Dv2-series CPU is about 35% faster than the D-series CPU. It is based on the latest generation 2.4 GHz Intel Xeon® E5-2673 v3 (Haswell) processor, and with the Intel Turbo Boost Technology 2.0, can go up to 3.1 GHz. The Dv2-series has the same memory and disk configurations as the D-series.

The basic tier sizes are primarily for development workloads and other applications that don't require load balancing, auto-scaling, or memory-intensive virtual machines. For information about VM sizes that are more appropriate for production applications, see (Sizes for virtual machines)[virtual-machines-size-specs.md] and for VM pricing information, see Virtual Machines Pricing.

DSv2-series*

ACU: 210-250

Size CPU cores Memory: GiB Local SSD: GiB Max data disks Max cached and local disk throughput: IOPS / MBps (cache size in GiB) Max uncached disk throughput: IOPS / MBps Max NICs / Network bandwidth
Standard_DS1_v2 1 3.5 7 2 4,000 / 32 (43) 3,200 / 48 2 moderate
Standard_DS2_v2 2 7 14 4 8,000 / 64 (86) 6,400 / 96 2 high
Standard_DS3_v2 4 14 28 8 16,000 / 128 (172) 12,800 / 192 4 high
Standard_DS4_v2 8 28 56 16 32,000 / 256 (344) 25,600 / 384 8 high
Standard_DS5_v2 16 56 112 32 64,000 / 512 (688) 51,200 / 768 8 extremely high

Dv2-series

ACU: 210-250

Size CPU cores Memory: GiB Local SSD: GiB Max local disk throughput: IOPS / Read MBps / Write MBps Max data disks / throughput: IOPS Max NICs / Network bandwidth
Standard_D1_v2 1 3.5 50 3000 / 46 / 23 2 / 2x500 2 / moderate
Standard_D2_v2 2 7 100 6000 / 93 / 46 4 / 4x500 2 / high
Standard_D3_v2 4 14 200 12000 / 187 / 93 8 / 8x500 4 / high
Standard_D4_v2 8 28 400 24000 / 375 / 187 16 / 16x500 8 / high
Standard_D5_v2 16 56 800 48000 / 750 / 375 32 / 32x500 8 / extremely high


DS-series*

Size CPU cores Memory: GiB Local SSD: GiB Max data disks Max cached and local disk throughput: IOPS / MBps (cache size in GiB) Max uncached disk throughput: IOPS / MBps Max NICs / Network bandwidth
Standard_DS1 1 3.5 7 2 4,000 / 32 (43) 3,200 / 32 2 / moderate
Standard_DS2 2 7 14 4 8,000 / 64 (86) 6,400 / 64 2 / high
Standard_DS3 4 14 28 8 16,000 / 128 (172) 12,800 / 128 4 / high
Standard_DS4 8 28 56 16 32,000 / 256 (344) 25,600 / 256 8 / high


D-series

ACU: 160

Size CPU cores Memory: GiB Local SSD: GiB Max local disk throughput: IOPS / Read MBps / Write MBps Max data disks / throughput: IOPS Max NICs / Network bandwidth
Standard_D1 1 3.5 50 3000 / 46 / 23 2 / 2x500 2 / moderate
Standard_D2 2 7 100 6000 / 93 / 46 4 / 4x500 2 / high
Standard_D3 4 14 200 12000 / 187 / 93 8 / 8x500 4 / high
Standard_D4 8 28 400 24000 / 375 / 187 16 / 16x500 8 / high


Av2-series

ACU: 100

Size CPU cores Memory: GiB Local SSD: GiB Max local disk throughput: IOPS / Read MBps / Write MBps Max data disks / throughput: IOPS Max NICs / Network bandwidth
Standard_A1_v2 1 2 10 1000 / 20 / 10 2 / 2x500 2 / moderate
Standard_A2_v2 2 4 20 2000 / 40 / 20 4 / 4x500 2 / moderate
Standard_A4_v2 4 8 40 4000 / 80 / 40 8 / 8x500 4 / high
Standard_A8_v2 8 16 80 8000 / 160 / 80 16 / 16x500 8 / high
Standard_A2m_v2 2 16 20 2000 / 40 / 20 4 / 4x500 2 / moderate
Standard_A4m_v2 4 32 40 4000 / 80 / 40 8 / 8x500 4 / high
Standard_A8m_v2 8 64 80 8000 / 160 / 80 16 / 16x500 8 / high


A-series

ACU: 50-100

Size CPU cores Memory: GiB Local HDD: GiB Max data disks Max data disk throughput: IOPS Max NICs / Network bandwidth
Standard_A0* 1 0.768 20 1 1x500 2 / low
Standard_A1 1 1.75 70 2 2x500 2 / moderate
Standard_A2 2 3.5 135 4 4x500 2 / moderate
Standard_A3 4 7 285 8 8x500 2 / high
Standard_A4 8 14 605 16 16x500 4 / high
Standard_A5 2 14 135 4 4x500 2 / moderate
Standard_A6 4 28 285 8 8x500 2 / high
Standard_A7 8 56 605 16 16x500 4 / high


*The A0 size is over-subscribed on the physical hardware. For this specific size only, other customer deployments may impact the performance of your running workload. The relative performance is outlined below as the expected baseline, subject to an approximate variability of 15 percent.

Standard A0 - A4 using CLI and PowerShell

In the classic deployment model, some VM size names are slightly different in CLI and PowerShell:

  • Standard_A0 is ExtraSmall
  • Standard_A1 is Small
  • Standard_A2 is Medium
  • Standard_A3 is Large
  • Standard_A4 is ExtraLarge

Basic A

Size – Size\Name CPU cores Memory NICs (Max) Max temporary disk size Max. data disks 1023 GB each) Max. IOPS (300 per disk)
A0\Basic_A0 1 768 MB 2 20 GB 1 1x300
A1\Basic_A1 1 1.75 GB 2 40 GB 2 2x300
A2\Basic_A2 2 3.5 GB 2 60 GB 4 4x300
A3\Basic_A3 4 7 GB 2 120 GB 8 8x300
A4\Basic_A4 8 14 GB 2 240 GB 16 16x300

Size table definitions

  • Storage capacity is shown in units of GiB or 1024^3 bytes. When comparing disks measured in GB (1000^3 bytes) to disks measured in GiB (1024^3) remember that capacity numbers given in GiB may appear smaller. For example, 1023 GiB = 1098.4 GB
  • Disk throughput is measured in input/output operations per second (IOPS) and MBps where MBps = 10^6 bytes/sec.
  • Data disks can operate in cached or uncached modes. For cached data disk operation, the host cache mode is set to ReadOnly or ReadWrite. For uncached data disk operation, the host cache mode is set to None.
  • Maximum network bandwidth is the maximum aggregated bandwidth allocated and assigned per VM type. The maximum bandwidth provides guidance for selecting the right VM type to ensure adequate network capacity is available. When moving between Low, Moderate, High and Very High, the throughput will increase accordingly. Actual network performance will depend on many factors including network and application loads, and application network settings.

Other sizes

Next steps

Learn more about how Azure compute units (ACU) can help you compare compute performance across Azure SKUs.