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Bv1 sizes series

Note

These virtual machine sizes are a previous generation series. While older VM sizes are supported until further notice, we recommended using newer generations for improved performance and security. Check out the sizes overview's list of VM size families by type for a selection of newer sizes.

The B-series VMs can be deployed on various hardware types and processors, so competitive bandwidth allocation is provided. B-series run on the third Generation Intel® Xeon® Platinum 8370C (Ice Lake), the Intel® Xeon® Platinum 8272CL (Cascade Lake), the Intel® Xeon® 8171M 2.1 GHz (Skylake), the Intel® Xeon® E5-2673 v4 2.3 GHz (Broadwell), or the Intel® Xeon® E5-2673 v3 2.4 GHz (Haswell) processors. B-series VMs are ideal for workloads that don't need the full performance of the CPU continuously, like web servers, proof of concepts, small databases, and development build environments. These workloads typically have burstable performance requirements. To determine the physical hardware on which this size is deployed, query the virtual hardware from within the virtual machine. The B-series provides you with the ability to purchase a VM size with baseline performance that can build up credits when its using less than its baseline. When the VM has accumulated credits, the VM can burst above the baseline using up to 100% of the vCPU when your application requires higher CPU performance.

Read more about the B-series CPU credit model.

Host specifications

Part Quantity
Count Units
Specs
SKU ID, Performance Units, etc.
Processor 1 - 20 vCPUs Intel Xeon Platinum 8370C (Ice Lake) [x86-64]
Intel Xeon Platinum 8272CL (Cascade Lake) [x86-64]
Intel Xeon 8171M (Skylake) [x86-64]
Intel Xeon E5-2673 v4 (Broadwell) [x86-64]
Intel Xeon E5-2673 v3 (Haswell) [x86-64]
Memory 0.5 - 80 GiB
Local Storage 1 Disk 4 - 160 GiB
IOPS (RR)
MBps (RR)
Remote Storage 2 - 32 Disks 160 - 4320 IOPS
10 - 50 MBps
Network 2 - 8 NICs Mbps
Accelerators None

Feature support

Premium Storage: Supported
Premium Storage caching: Not Supported
Live Migration: Supported
Memory Preserving Updates: Supported
Generation 2 VMs: Supported
Generation 1 VMs: Supported
Accelerated Networking: Supported
Ephemeral OS Disk: Supported
Nested Virtualization: Not Supported

Note

Accelerated Networking is only supported for Standard_B12ms, Standard_B16ms and Standard_B20ms.

Sizes in series

vCPUs (Qty.) and Memory for each size

Size Name vCPUs (Qty.) Memory (GB)
Standard_B1ls2 1 0.5
Standard_B1s 1 1
Standard_B1ms 1 2
Standard_B2s 2 4
Standard_B2ms 2 8
Standard_B4ms 4 16
Standard_B8ms 8 32
Standard_B12ms 12 48
Standard_B16ms 16 64
Standard_B20ms 20 80

VM Basics resources

Other size information

List of all available sizes: Sizes

Pricing Calculator: Pricing Calculator

Information on Disk Types: Disk Types

Next steps

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

Check out Azure Dedicated Hosts for physical servers able to host one or more virtual machines assigned to one Azure subscription.

Learn how to Monitor Azure virtual machines.