Windows Azure 名詞定義（Glossary）

Glossary（名詞）	Definition（定義）
Availability Set 可用性組	refers to two or more Virtual Machines deployed across different Fault Domains to avoid a single point of failure. 指為避免單點故障而在不同故障域部署的兩臺或更多虛擬機器。
Cloud Services 雲端計算服務	refers to a set of compute resources utilized for Web and Worker Roles. 指用於 Web 角色和 Worker 角色的一套計算資源。
Web Role Web 角色	is a Cloud Services component run in the Windows Azure execution environment that is customized for web application programming as supported by IIS and ASP.NET. 指在 Windows Azure 執行環境中執行的雲端計算服務元件，它針對 Web 應用程式程式設計而定製，受 IIS 和 ASP.NET 支援。
Worker Role Worker 角色	is a Cloud Services component run in the Windows Azure execution environment that is useful for generalized development, and may perform background processing for a Web Role. 指在 Windows Azure 執行環境中執行的雲端計算服務元件，它對於一般性的開發很有用，並可能為 Web 角色執行後臺處理任務。
External Connectivity 外部連通性	is bi-directional network traffic over supported protocols such as UDP and TCP that can be sent and received from a public IP address. 指可使用支援的協議（如 UDP 和 TCP）通過公共 IP 地址傳送和接收的雙向網路流量。
Fault Domain 故障域	is a collection of servers that share common resources such as power and network connectivity. 指共享公共資源（如電源和網路連線）的一組伺服器。
Update Domain 更新域	refers to a set of Windows Azure instances to which platform updates are concurrently applied. 指一組 Windows Azure 例項，將同時對這些例項應用平臺更新。
Service/Services 服務	refers to the Windows Azure Cloud Services, Virtual Machines, and Virtual Network provided to Customer pursuant to the Agreement. 指根據協議提供給客戶的 Windows Azure 雲端計算服務、虛擬機器和虛擬網路。
Tenant 租戶	represents one or more roles each consisting of one or more role instances that are deployed in a single package. 指一個或多個角色，每個角色由在單個包中部署的一個或多個角色例項組成。
Virtual Machine 虛擬機器	refers to persistent instance types that can be deployed individually or as part of an Availability Set. 指可單獨部署或作為可用性組的一部分進行部署的持久化例項型別。
Virtual Network 虛擬網路	is a service supported by Windows Azure that enables customers to extend their corporate network to the cloud. The Virtual Network service consists of two parts: a VNet and a Virtual Network Gateway. 指 Windows Azure 支援的一項服務，客戶能夠利用該服務將企業網路擴充套件到雲。虛擬網路服務由兩部分組成：VNet 和虛擬網路閘道器。
Virtual Network Gateway 虛擬網路閘道器	refers to a Windows Azure service that facilitates cross-premises connectivity between one Virtual Network and one customer on-premises network over IPsec VPN. 指 Windows Azure 的一項服務，它能夠通過 IPsec VPN 提供一個虛擬網路與一個客戶本地網路之間的遠端連通性。
VNet	refers to a virtual private network consisting of a collection of user-defined IP addresses and subnets that form a network boundary within Windows Azure. VNets support IP addresses as defined in RFC 1918. 指虛擬專用網路，它由一組使用者自定義的 IP 地址和子網組成，從而構成 Windows Azure 的網路邊界。VNet 支援 RFC 1918 中定義的 IP 地址。