DCasv5 sizes series

Article
2024-12-03

DCasv5-series VMs offer a combination of vCPU and memory for most production workloads. These confidential VMs use AMD's third-Generation EPYC™ 7763v processor in a multi-threaded configuration with up to 256 MB L3 cache. These processors can achieve a boosted maximum frequency of 3.5 GHz. Both series offer Secure Encrypted Virtualization-Secure Nested Paging (SEV-SNP). SEV-SNP provides hardware-isolated VMs that protect data from other VMs, the hypervisor, and host management code. Confidential VMs offer hardware-based VM memory encryption. These series also offer OS disk pre-encryption before VM provisioning with different key management solutions. These VMs with no local disk provide a better value proposition for workloads where you don't need a local temporary disk. For more information, see the FAQ for Azure VM sizes with no local temporary disk.

Host specifications

Part	Quantity ^{Count Units}	Specs ^{SKU ID, Performance Units, etc.}
Processor	2 - 96 vCPUs	AMD EPYC (Milan) [x86-64]
Memory	8 - 384 GiB
Local Storage	None
Remote Storage	4 - 32 Disks	3750 - 80000 IOPS 82 - 1600 MBps
Network	2 - 8 NICs	3000 - 20000 Mbps
Accelerators	None

Feature support

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

Sizes in series

vCPUs (Qty.) and Memory for each size

Size Name	vCPUs (Qty.)	Memory (GB)
Standard_DC2as_v5	2	8
Standard_DC4as_v5	4	16
Standard_DC8as_v5	8	32
Standard_DC16as_v5	16	64
Standard_DC32as_v5	32	128
Standard_DC48as_v5	48	192
Standard_DC64as_v5	64	256
Standard_DC96as_v5	96	384

VM Basics resources

Check vCPU quotas

Remote (uncached) storage info for each size

Size Name	Max Remote Storage Disks (Qty.)	Uncached Premium SSD Disk IOPS	Uncached Premium SSD Throughput (MB/s)
Standard_DC2as_v5	4	3750	48
Standard_DC4as_v5	8	6400	96
Standard_DC8as_v5	16	12800	192
Standard_DC16as_v5	32	25600	384
Standard_DC32as_v5	32	51200	768
Standard_DC48as_v5	32	76800	1152
Standard_DC64as_v5	32	80000	1200
Standard_DC96as_v5	32	80000	1200

Storage resources

Table definitions

¹Some sizes support bursting to temporarily increase disk performance. Burst speeds can be maintained for up to 30 minutes at a time.
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.
To learn how to get the best storage performance for your VMs, see Virtual machine and disk performance.

Network interface info for each size

Size Name	Max NICs (Qty.)	Max Network Bandwidth (Mb/s)
Standard_DC2as_v5	2	3000
Standard_DC4as_v5	2	5000
Standard_DC8as_v5	4	5000
Standard_DC16as_v5	4	10000
Standard_DC32as_v5	8	12500
Standard_DC48as_v5	8	15000
Standard_DC64as_v5	8	20000
Standard_DC96as_v5	8	20000

Networking resources

Table definitions

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 size information

List of all available sizes: Sizes

Pricing Calculator: Pricing Calculator

Information on Disk Types: Disk Types

Next steps

Take advantage of the latest performance and features available for your workloads by changing the size of a virtual machine.

Utilize Microsoft's in-house designed ARM processors with Azure Cobalt VMs.

Learn how to Monitor Azure virtual machines.

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