Considering the Windows Server 2008 Editions
Windows Server 2008 comes in a number of versions and a number of editions. A version affects functionality in some way. For example, if your server requires a 32-bit operating system, you use the 32-bit version of the product. Likewise, anyone with an Itanium processor will require the Itanium version of the product. Windows Server 2008 breaks with tradition in that it also offers a Server Core version.
This new lightweight version is Windows without the windows; you can read more about it in the “Understanding Windows Server 2008 Server Core” section of this chapter. The Server Core version comes in Standard, Enterprise, and Datacenter editions. You can’t get Server Core in the Web or Storage Server editions because these editions require the use of a graphical interface and Server Core doesn’t provide the required support.
The Itanium Processor version is specifically designed to run on the Itanium processor. Except for not supporting a 32-bit version (because this processor doesn’t come in a 32-bit format), the features of the Itanium Processor version are much like those found in the Enterprise edition.
An edition defines the feature set of a particular version of the operating system. The Standard edition offers a different feature set from the Enterprise edition. You can get both editions in 32-bit versions. Consequently, you need to know which version and which edition you want before you purchase Windows Server 2008.
Although figuring out which version you want is relatively easy because you already know about your hardware, figuring out the edition is a lot harder because you have to consider features that you may not know about. The following sections describe each of the editions that Microsoft is offering for Windows Server 2008.
Memory considerations
The edition you choose determines how much memory the server will support. Sometimes, the memory limits aren’t a problem. If you have a small company with basic needs, you’ll never exceed the limits of even the 32-bit version of the Standard edition. However, if you’re working in a large enterprise and your server is part of a server farm, you’ll probably need something more robust than the Standard edition. Table 1-1 provides you with the memory limitations for various editions of Windows Server 2008.
Table 1-1 Memory Limits for the Windows Server 2008 Editions
Windows Server 2008 comes in a number of versions and a number of editions. A version affects functionality in some way. For example, if your server requires a 32-bit operating system, you use the 32-bit version of the product. Likewise, anyone with an Itanium processor will require the Itanium version of the product. Windows Server 2008 breaks with tradition in that it also offers a Server Core version.
This new lightweight version is Windows without the windows; you can read more about it in the “Understanding Windows Server 2008 Server Core” section of this chapter. The Server Core version comes in Standard, Enterprise, and Datacenter editions. You can’t get Server Core in the Web or Storage Server editions because these editions require the use of a graphical interface and Server Core doesn’t provide the required support.
The Itanium Processor version is specifically designed to run on the Itanium processor. Except for not supporting a 32-bit version (because this processor doesn’t come in a 32-bit format), the features of the Itanium Processor version are much like those found in the Enterprise edition.
An edition defines the feature set of a particular version of the operating system. The Standard edition offers a different feature set from the Enterprise edition. You can get both editions in 32-bit versions. Consequently, you need to know which version and which edition you want before you purchase Windows Server 2008.
Although figuring out which version you want is relatively easy because you already know about your hardware, figuring out the edition is a lot harder because you have to consider features that you may not know about. The following sections describe each of the editions that Microsoft is offering for Windows Server 2008.
Memory considerations
The edition you choose determines how much memory the server will support. Sometimes, the memory limits aren’t a problem. If you have a small company with basic needs, you’ll never exceed the limits of even the 32-bit version of the Standard edition. However, if you’re working in a large enterprise and your server is part of a server farm, you’ll probably need something more robust than the Standard edition. Table 1-1 provides you with the memory limitations for various editions of Windows Server 2008.
Table 1-1 Memory Limits for the Windows Server 2008 Editions
Other hardware considerations
You’re going to need a relatively large hard drive for Windows Server 2008. Even though Microsoft says that you can get by with a 10 GB hard drive, that’s hardly realistic. Even the 40 GB hard drive that Microsoft Recommends is quite small for a Windows Server 2008 setup. A real setup is going to have as much hard drive space as you can afford. Because hard drives are inexpensive today, you should consider getting a 500 GB or larger hard drive and make sure to include a Redundant Array of Inexpensive Disks 1+0 or 0+1 setup in your plans, for reliability reasons.
You can read more about the various RAID levels at http://en.wikipedia.org/wiki/Standard_RAID_levels,In addition to having hard drive support, you must have a Video Graphics Array (VGA) display adapter (or better) capable of at least 800 x 600 resolution. It’s important to remember that this is a server, not a workstation. In many cases,you won’t need a super-high-resolution display adapter and monitor for a server. In fact, in some cases, it’s detrimental to provide too much screen real estate because moving all those bits around will simply consume processing cycles you could use for some other task.
You normally need a mouse too when working with Windows Server 2008. It’s possible to get by without a mouse by using hardware shortcuts, but you may find that some tasks become difficult when you go this route. As with the display adapter, you don’t need a fancy mouse to work with the server. 24 Considering the Windows Server 2008 Editions
Standard
The Standard edition provides functionality that the average work center, small business, or even medium-size business requires.. The main limitations for the Standard edition are the number of processors (up to four processors in a single server) and the amount of memory you can use. (See the “Memory considerations” section of this Post for details.)
Enterprise
The Enterprise edition provides functionality that a medium-size business will normally require for a centralized server. You also find this edition in larger businesses as part of a large workgroup. In addition to all the functionality that the Standard edition provides, the Enterprise edition also provides greater memory support and the ability to use more processors (up to eight processors in a single server). Additional features include clustering and hot-add memory support.
Datacenter
The Datacenter edition provides support for large businesses as part of the centralized server setup. It provides the maximum processor (up to 64 processors in a single server) and memory support allowed by Windows Server 2008. You receive, in addition to the features found in the Enterprise edition, improved clustering support and the ability to dynamically partition hardware. Additional features include hot-replace memory and hot add/ replace processor support.
Web
The Web edition is a special Windows Server 2008 setup for the sole purpose of supporting Web sites. Consequently, you won’t find many of the features found in other editions in the Web edition. This edition focuses on .NET Framework, IIS 7, and ASP.NET support. The reason you want to get this edition for Web sites is that it uses resources more efficiently and helps you support Web sites with fewer resources. In addition, having fewer features translates into a more reliable and secure server because there are fewer ways in which the server can fail. The memory and processor limits for the Web edition are the same as for the Standard edition. You can’t use the Web edition to create virtualized images.
You’re going to need a relatively large hard drive for Windows Server 2008. Even though Microsoft says that you can get by with a 10 GB hard drive, that’s hardly realistic. Even the 40 GB hard drive that Microsoft Recommends is quite small for a Windows Server 2008 setup. A real setup is going to have as much hard drive space as you can afford. Because hard drives are inexpensive today, you should consider getting a 500 GB or larger hard drive and make sure to include a Redundant Array of Inexpensive Disks 1+0 or 0+1 setup in your plans, for reliability reasons.
You can read more about the various RAID levels at http://en.wikipedia.org/wiki/Standard_RAID_levels,In addition to having hard drive support, you must have a Video Graphics Array (VGA) display adapter (or better) capable of at least 800 x 600 resolution. It’s important to remember that this is a server, not a workstation. In many cases,you won’t need a super-high-resolution display adapter and monitor for a server. In fact, in some cases, it’s detrimental to provide too much screen real estate because moving all those bits around will simply consume processing cycles you could use for some other task.
You normally need a mouse too when working with Windows Server 2008. It’s possible to get by without a mouse by using hardware shortcuts, but you may find that some tasks become difficult when you go this route. As with the display adapter, you don’t need a fancy mouse to work with the server. 24 Considering the Windows Server 2008 Editions
Standard
The Standard edition provides functionality that the average work center, small business, or even medium-size business requires.. The main limitations for the Standard edition are the number of processors (up to four processors in a single server) and the amount of memory you can use. (See the “Memory considerations” section of this Post for details.)
Enterprise
The Enterprise edition provides functionality that a medium-size business will normally require for a centralized server. You also find this edition in larger businesses as part of a large workgroup. In addition to all the functionality that the Standard edition provides, the Enterprise edition also provides greater memory support and the ability to use more processors (up to eight processors in a single server). Additional features include clustering and hot-add memory support.
Datacenter
The Datacenter edition provides support for large businesses as part of the centralized server setup. It provides the maximum processor (up to 64 processors in a single server) and memory support allowed by Windows Server 2008. You receive, in addition to the features found in the Enterprise edition, improved clustering support and the ability to dynamically partition hardware. Additional features include hot-replace memory and hot add/ replace processor support.
Web
The Web edition is a special Windows Server 2008 setup for the sole purpose of supporting Web sites. Consequently, you won’t find many of the features found in other editions in the Web edition. This edition focuses on .NET Framework, IIS 7, and ASP.NET support. The reason you want to get this edition for Web sites is that it uses resources more efficiently and helps you support Web sites with fewer resources. In addition, having fewer features translates into a more reliable and secure server because there are fewer ways in which the server can fail. The memory and processor limits for the Web edition are the same as for the Standard edition. You can’t use the Web edition to create virtualized images.
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