Dav4 and Dasv4-series

The Dav4-series and Dasv4-series are new sizes utilizing AMD's 2.35Ghz EPYCTM 7452 processor in a multi-threaded configuration with up to 256 MB L3 cache dedicating 8 MB of that L3 cache to every 8 cores increasing customer options for running their general purpose workloads. The Dav4-series and Dasv4-series have the same memory and disk configurations as the D & Dsv3-series.

Dav4-series

ACU: 230-260

Premium Storage: Not Supported

Premium Storage caching: Not Supported

Live Migration: Supported

Memory Preserving Updates: Supported

Dav4-series sizes are based on the 2.35Ghz AMD EPYCTM 7452 processor that can achieve a boosted maximum frequency of 3.35GHz. The Dav4-series sizes offer a combination of vCPU, memory and temporary storage for most production workloads. Data disk storage is billed separately from virtual machines. To use premium SSD, use the Dasv4 sizes. The pricing and billing meters for Dasv4 sizes are the same as the Dav4-series.

Size vCPU Memory: GiB Temp storage (SSD) GiB Max data disks Max temp storage throughput: IOPS / Read MBps / Write MBps Max NICs / Expected network bandwidth (MBps)
Standard_D2a_v4 2 8 50 4 3000 / 46 / 23 2 / 1000
Standard_D4a_v4 4 16 100 8 6000 / 93 / 46 2 / 2000
Standard_D8a_v4 8 32 200 16 12000 / 187 / 93 4 / 4000
Standard_D16a_v4 16 64 400 32 24000 / 375 / 187 8 / 8000
Standard_D32a_v4 32 128 800 32 48000 / 750 / 375 8 / 16000
Standard_D48a_v4 48 192 1200 32 96000 / 1000 / 500 8 / 24000
Standard_D64a_v4 64 256 1600 32 96000 / 1000 / 500 8 / 30000
Standard_D96a_v4 96 384 2400 32 96000 / 1000 / 500 8 / 30000

Dasv4-series

ACU: 230-260

Premium Storage: Supported

Premium Storage caching: Supported

Live Migration: Supported

Memory Preserving Updates: Supported

Dasv4-series sizes are based on the 2.35Ghz AMD EPYCTM 7452 processor that can achieve a boosted maximum frequency of 3.35GHz and use premium SSD. The Dasv4-series sizes offer a combination of vCPU, memory and temporary storage for most production workloads.

Size vCPU Memory: GiB Temp storage (SSD) GiB Max data disks Max cached and temp storage throughput: IOPS / MBps (cache size in GiB) Max uncached disk throughput: IOPS / MBps Max NICs / Expected network bandwidth (MBps)
Standard_D2as_v4 2 8 16 4 4000 / 32 (50) 3200 / 48 2 / 1000
Standard_D4as_v4 4 16 32 8 8000 / 64 (100) 6400 / 96 2 / 2000
Standard_D8as_v4 8 32 64 16 16000 / 128 (200) 12800 / 192 4 / 4000
Standard_D16as_v4 16 64 128 32 32000 / 255 (400) 25600 / 384 8 / 8000
Standard_D32as_v4 32 128 256 32 64000 / 510 (800) 51200 / 768 8 / 16000
Standard_D48as_v4 48 192 384 32 96000 / 1020 (1200) 76800 / 1148 8 / 24000
Standard_D64as_v4 64 256 512 32 128000 / 1020 (1600) 80000 / 1200 8 / 30000
Standard_D96as_v4 96 384 768 32 192000 / 1020 (2400) 80000 / 1200 8 / 30000

Size table definitions

  • Storage capacity is shown in units of GiB or 1024^3 bytes. When you compare 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.

  • If you want to get the best performance for your VMs, you should limit the number of data disks to two disks per vCPU.

  • Expected network bandwidth is the maximum aggregated bandwidth allocated per VM type across all NICs, for all destinations. For more information, see Virtual machine network bandwidth.

    Upper limits aren't guaranteed. Limits offer guidance for selecting the right VM type for the intended application. Actual network performance will depend on several factors including network congestion, application loads, and network settings. For information on optimizing network throughput, see Optimize network throughput for Azure virtual machines. To achieve the expected network performance on Linux or Windows, you may need to select a specific version or optimize your VM. For more information, see Bandwidth/Throughput testing (NTTTCP).

Other sizes

Next steps

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