项目完工后,在部署实施的时候经常会听到 Private Cloud 环境和 On-Premise (更常见的是简称 On-Prem) 两个专业术语,下面通过维基百科词条作下解释说明:
Private Cloud 定义:
第一句“Private cloud is cloud infrastructure operated solely for a single organization, whether managed internally or by a third party, and hosted either internally or externally.”划重点,表明的是,私有云是专为单个组织运营的云基础架构,无论是内部管理还是第三方管理,无论是内部还是外部托管。
On-Premise Software 定义:
内部部署软件(也称为内部部署,缩写为“本地内部”)使用该软件安装并运行在个人或组织所在地的计算机上,而不是在远程设施。注意第一句 on the premises of the person or organization using the software.是指自有使用。通常是在内网内可用。
狭义 Private Cloud 定义分类(On-Premise 和 Hosted):
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On-Premise Private Cloud, often called Internal Cloud, is hosted within an organizations own offices, or data center, and provides an internal solution for hosting needs.
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A hosted Private Cloud solution is owned and operated by third-party service providers.
总结
从话术来看,公有云厂家站在卖服务的立场,更愿意把Private Cloud叫做“专有云”,其实就是Hosted Private Cloud,并希望为该组织提供第三方的运维服务。
而传统的设备厂家和软件厂家,更喜欢把Private Cloud叫做“私有云”,On-Premise Private Cloud,从而在强调“自有”的基础上更好的卖软件和硬件。