Microsoft Azure Series Seven Azure IaaS virtual machine size

When you create an azure virtual machine, there are two types of virtual machines: basic and standard.

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The basic types of virtual machines have the following characteristics:

1. Reduced functionality: Basic types of virtual machines do not include load balancing and auto-scaling capabilities

2. Single-instance applications, such as: development with virtual machines, test servers, etc., without SLA

3. The price is cheaper than the standard type of virtual confidential.

Microsoft Azure offers different sizes of computing power, and the types of virtual machines currently supported by Microsoft Azure are the A-series and D-series.

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the types of a-series virtual machines are as follows:

Virtual machine Type	Cpu	Memory	Number of external disks	IOPS
A0	Shares	768MB	1	500
A1	1	1.75GB	2	2 * 500
A2	2	3.5GB	4	4 * 500
A3	4	7GB	8	8 * 500
A4	8	14GB	16	16 * 500
A5	2	14GB	4	4 * 500
A6	4	28GB	8	8 * 500
A7	8	56GB	16	16 * 500

In addition to the A0 virtual machine type, its CPU is shared with other users. Other types of virtual machines, such as A1-a7, whose CPUs are exclusive, are not shared with other users.

the types of D-series virtual machines are as follows:

	cpu	memory	temporary disk	external disks	iops
d1	1	50GB	2	2 *
d2	2	100GB	Span style= "font-family: ' Microsoft Jacob Black '; font-size:16px;" >4 *
d3	4	200GB	8	8 *
d4	8	400GB	16	16 *
d11	2	100GB	4	4 *
d12	4	200GB	8	8 *
d13	8	400GB	16	16 *
D14	16	112GB	800GB	32	32 * 500

The benefits of the Azure Virtual Machine,d series for a series are:

1. Single VM more CPU Core

D-Series virtual machines have a maximum configuration of 16CORE/112GB ram compared to the configuration of maximum 8CORE/56GB RAM for a-series single VM

2. D-Series CPU performance increased by about 60% compared to a series

The D-series VMs are designed to run applications that require higher computing power and temporary disk performance. D-Series VMS provide faster processors, higher memory core ratios, and solid state drives (SSDs) for temporary disks.

3. Added local temporary SSD storage

Note that this is a temporary storage, which is displayed as D in Windows, and is/DEV/SDB1 on Linux systems.

Pros: High ioPS; Disadvantages: Non-persistent storage, files are at risk of loss and cannot retain important files.

4. A larger local temporary disk

As shown in the table above, the local temporary disk is 800G maximum.

Whether it's a-series VM or a D-series VM. Local persistent disks are SAS disks with IOPS of 500 per disk.

if we have higher performance requirements for disks, we can use the Cpu/ram configuration of the DS series Vm,ds series virtual machines with the D-series virtual machines in the same place, except that the DS-series VMs are on-premises persistent disks that are SSDS and can provide higher disk IOPS performance.

Virtual machine Type	Cpu	Memory	Maximum ioPS	Maximum disk throughput
Standard_ds1	1	3.5GB	3200	32mb/s
Standard_ds2	2	7GB	6400	64mb/s
Standard_ds3	4	14GB	12800	128mb/s
Standard_ds4	8	28GB	25600	256mb/s
Standard_ds11	2	14GB	6400	64mb/s
Standard_ds12	4	28GB	12800	128mb/s
Standard_ds13	8	56GB	25600	256mb/s
Standard_ds14	16	112GB	50000	512mb/s

There is also a new type of VM, known as G-series VM

will provide more memory and more local solid state drive (SSD) storage than the current VM size. The largest G-series will provide 448 GB of RAM and 6.5 TB of local SSD storage.

Azure Premium Storage is a new type of SSD-based storage designed to support I/O intensive workloads.

More Virtual Machine Size introduction

https://www.azure.cn/documentation/articles/virtual-machines-windows-sizes/

Microsoft Azure Series Seven Azure IaaS virtual machine size