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How to implement Microsoft Windows Server 2012 R2 feature parsing, I believe many inexperienced people do not know what to do. Therefore, this paper summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.

In fact, according to the previous rule, Microsoft releases a new version of the server operating system every two years, and less than a year after the release of Windows Server 2012, Microsoft brought us the R2 version of Server 2012. Perhaps in the eyes of many people, the R2 version will not bring significant updates or improvements, but we do see a lot of changes in Hyper-V. The new generation of Windows virtual machines will better support Linux. This article will introduce ten new features of Windows Server 2012 R2 Hyper-V.

Second generation virtual machine

For a long time, the basic structure of the virtual machine has not changed, because the operating system is built on the running physical device, and the virtual machine has a wide range of support for hardware, such as feature NIC card, IDE disk controller and so on. In Windows Server 2012 R2, Hyper-V brings a whole new concept in architecture based on modern devices without virtual devices. This allows Hyper-V to add many new features, such as secure startup of virtual machines, virtual network adapters, etc., but the only disadvantage is that it is limited to 64-bit versions of Windows 8 and Windows Server 2012.

Directly connect to the virtual machine

If you want to connect a running virtual machine through RDP, you must do it through an available network. In addition, the virtual machine must have an IP address and then try to connect through the system, which requires a clear understanding of the existing network environment (including security, etc.). However, in Windows Server 2012 R2, you don't have to do this. Because Hyper-V supports direct connection to virtual machines, it allows remote desktops to connect directly to any running virtual machine, which we now call a virtual bus.

Enhanced Hyper-V replication

With Hyper-V replicas, administrators can replicate their Hyper-V virtual machines from one Hyper-V host on the primary site to the replica site, but is currently limited to replicating one target virtual machine, which makes many people feel that this feature is only suitable for small and medium-sized enterprises, but not for large enterprises. With the release of Server 2012 R2, Hyper-V copy functionality has also been enhanced.

More reasonable Hyper-V replication interval option

The existing Hyper-V replication function provides a replication interval of 5 minutes, and even if your hardware performance is very high, you will not be able to copy faster. And if you don't need to copy so often, you can't help it, because there's only one option. In Windows Server 2012 R2, Microsoft added two options for replication intervals, 30 seconds and 15 minutes, which made administrators more flexible.

Improve migration performanc

There are two ways to improve the performance of live migration in Windows Server 2012 Hyper-V. * compressed data can effectively reduce the total amount of data transmitted by the line, but it should be noted that data compression operations especially consume CPU resources and may affect other operations during the compression process. The second is to use SMB, which requires a network adapter that supports RDMA.

Now, the official advice from Microsoft is:

If you have 10Gb data, it is recommended to use RDMA

Otherwise, data compression is used, which is also the way that enterprises choose in most cases.

Export / copy virtual machines online

One of the disadvantages of Windows Server 2012 Hyper-V is that it needs to be stopped while exporting / copying the virtual machine. But in the actual production environment, this must not be allowed. In Windows Server 2012 R2 Hyper-V, Microsoft removed this restriction. It only takes a few mouse clicks to export or copy a virtual machine from Server 2012 R2. At the same time, you can use PowerShell to manage all related operations about Windows Server 2012.

Resize VHDX online

In Windows Server 2012, it was impossible to resize the virtual hard disk of a running virtual machine online, which was improved in Server 2012 R2. You can expand or decrease the size of the virtual hard disk (in VHDX format) without stopping the virtual machine.

Storage QoS

In Windows Server 2012 R2, you can limit a specific level of Icano throughput to a single virtual machine. As we can see in the screenshot below, you can set the minimum and * IOPS. If there are applications in your system that consume a lot of Imax O, you can consider using this feature to ensure that other virtual machines or hosts are not affected by a single Imax O.

Dynamic memory supports Linux

Microsoft will continue to improve its support for Linux VM. In the Windows Server2012 R2 version, Hyper-V can dynamically expand the amount of memory available to a running virtual machine, which is particularly convenient for Linux virtual machines (especially Web servers). In many Linux virtual machine environments, managing the total memory used by all running virtual machines becomes particularly important.

Share VHDX

In Windows Server 2012 R2, Windows Guest virtual machine clusters no longer require iSCSI or fibre Channel SAN, but can use a new feature called shared VHDX.

After reading the above, have you mastered how to implement Microsoft Windows Server 2012 R2 feature parsing? If you want to learn more skills or want to know more about it, you are welcome to follow the industry information channel, thank you for reading!

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