大家都应该知道微软将Windows Vista操作系统分成了若干个版本，并且计划将所有版本系统集成在一张DVD光盘上，只是根据不同的安装许可号来进行区分。

不过微软实际上将Windows Vista系统分成了25个不同的版本，在微软MSDN的技术文档中，Vista中的全新API “GetProductInfo”让我们可以看到令人吃惊的25个版本：

PRODUCT_BUSINESS: Windows Vista Business
PRODUCT_BUSINESS_N: TBD
PRODUCT_CLUSTER_SERVER: TBD
PRODUCT_DATACENTER_SERVER: Windows Server "Longhorn", Datacenter Edition (Full installATIon)
PRODUCT_DATACENTER_SERVER_CORE: Windows Server "Longhorn", Datacenter Edition (Server Core installation)
PRODUCT_ENTERPRISE: Windows Vista Enterprise
PRODUCT_ENTERPRISE_SERVER: Windows Server "Longhorn", Enterprise Edition (Full installation)
PRODUCT_ENTERPRISE_SERVER_CORE: Windows Server "Longhorn", Enterprise Edition (Server Core installation)
PRODUCT_ENTERPRISE_SERVER_IA64: Windows Server "Longhorn", Enterprise Edition for Itanium-based Systems
PRODUCT_HOME_BASIC: Windows Vista Home Basic
PRODUCT_HOME_BASIC_N: TBD
PRODUCT_HOME_PREMIUM: Windows Vista Home Premium
PRODUCT_HOME_SERVER: TBD
PRODUCT_SERVER_FOR_SMALLBUSINESS: TBD
PRODUCT_SMALLBUSINESS_SERVER: TBD
PRODUCT_SMALLBUSINESS_SERVER_PREMIUM: TBD
PRODUCT_STANDARD_SERVER: Windows Server "Longhorn" (Full installation)
PRODUCT_STANDARD_SERVER_CORE: Windows Server "Longhorn" (Server Core installation)
PRODUCT_STARTER: TBD
PRODUCT_STORAGE_ENTERPRISE_SERVER: TBD
PRODUCT_STORAGE_EXPRESS_SERVER: TBD
PRODUCT_STORAGE_STANDARD_SERVER: TBD
PRODUCT_STORAGE_WORKGROUP_SERVER: TBD
PRODUCT_ULTIMATE: Windows Vista Ultimate
PRODUCT_WEB_SERVER: TBD

我们在其中可以看到一些有趣的版本，比如说“Home Server”（家庭服务器）和“Storage Servers”（存储服务器）等。

PS：上面版本中出现的TBD是To be DECided的意思，也就是尚未确定。