There are two modernization paths available: on-premises upgrade, or migration by rehosting in Azure. If you rehost in Azure, you can migrate your existing Server images free of charge. As you upgrade, you still have the option to migrate to Azure by rehosting. See supported upgrade paths for Windows Server , for more information about your on-premises upgrade options.
If you are running Windows Server , you will need to upgrade to Windows Server Server Core provides you with a minimal installation of Windows Server that supports installing only certain server roles, as described later in this chapter. Contrast this with the Full installation option for Windows Server , which supports installing all available server roles and also other Microsoft or third-party server applications, such as Microsoft Exchange Server or SAP.
Before we go any further, the phrase "installation option" needs to be explained. Normally, when you purchase a copy of Windows Server , you purchase a license to use certain editions or stock-keeping units SKUs. Table lists the various editions of Windows Server that are available. The table also indicates which installation options Full, Server Core, or both are available for each edition.
Table Windows Server editions and their support for installation options. To understand what an "installation option" is, let's say you've purchased a volume license that lets you install a copy of Windows Server Enterprise Edition.
When you insert your volume-licensed media into a system and begin the installation process, one of the screens you'll see, as shown in Figure , presents you with a choice of editions and installation options. In Figure , your volume license or product key, for retail media gives you two installation options you can choose between: the second option a Full Installation of Windows Server Enterprise and the fifth option a Server Core Installation of Windows Server Enterprise , with the latter selected in this example.
Since the early days of the Microsoft Windows platform, Windows servers were essentially "everything" servers that included all kinds of features, some of which you might never actually use in your networking environment.
For instance, when you installed Windows Server on a system, the binaries for Routing and Remote Access Service RRAS were installed on your server even if you had no need for this service although you still had to configure and enable RRAS before it would work. Windows Server improves earlier versions by installing the binaries needed by a server role only if you choose to install that particular role on your server.
However, the Full installation option of Windows Server still installs many services and other components that are often not needed for a particular usage scenario. That's the reason Microsoft created a second installation option—Server Core—for Windows Server to eliminate any services and other features that are not essential for the support of certain commonly used server roles.
The result is the new Server Core installation option, which can be used to create a server that supports only a limited number of roles and features.
When you finish installing Server Core on a system and log on for the first time, you're in for a bit of a surprise. Figure shows the Server Core user interface after first logon. There's no desktop! That is, there is no Windows Explorer shell, with its Start menu, Taskbar, and the other features you may be used to seeing. When planning the installation of such system it must been take into account that the functions of failover cluster and AD Federation Services are functions of the Enterprise edition or Datacenter edition.
It supports cluster Load Balancing Network , but does not support failover clustering. Windows Server Enterprise The Enterprise edition will be indicated for large companies running heavy applications like SQL Server or Exchange Server , these applications will require more memory than the Standard edition supports.
The wise thing to do is put the Standard and Enterprise working together when these demands exist, the Standard running the most plain papers and Enterprise applications running the heavier ones or working in failover cluster. Windows Server Datacenter The Datacenter edition is intended only to large enterprise market , the main difference from the Enterprise is on the number of virtual machines that can be used with a single license is unlimited.
Before you download and install Windows Server R2 SP1, make sure that your server meets the given requirements. It is the stable and reliable server with much better support. I was having boot-up issues, with the computer freezing at the log-in screen for several minutes, and app icons seemed to bounce endlessly before the app would open. Now, from pressing the power button to the desktop takes 30 seconds, and apps open in a mere two bounces of the icon. With the release of SP1 for Windows 7 and Windows Server R2, the evaluation version of Windows Server R2 has also been updated by slipstreaming and integrating with the service pack.
0コメント