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On-Premises (On-Prem) 介绍
本文将简单介绍on-premises（常简称为on-prem）的概念、优缺点、以及与云服务的对比。
一、什么是On-Premises？
On-premises，通常被简称为on-prem，指的是在公司自有物理设施内部署和管理IT基础设施。这可能包括数据中心、服务器、网络硬件、存储设备等等1。
# 一个假设的服务器配置命令 $ sudo apt update $ sudo apt upgrade $ sudo apt install apache2 二、On-Prem 的优势
2.1 完全控制
对于on-prem部署，企业可以享有对所有硬件、软件和数据的完全控制权。这使得企业可以根据具体需求定制其IT环境2。
# 自定义配置示例 config = { 'server_ip': '192.168.1.100', 'server_port': '8080', 'database_name': 'my_database', } 2.2 数据安全性
由于所有数据都存储在企业自有的硬件中，因此on-prem可以提供更高的数据安全性和隐私保护3。
三、On-Prem 的挑战
3.1 高昂的前期投入
On-prem部署需要大量的前期投入，包括购买和设置硬件、购买软件许可证、建设和维护数据中心等等。
{ "hardware_costs": 50000, "software_licenses": 20000, "data_center_maintenance": 10000 } 3.2 需要专门的IT团队
运行和维护on-prem部署需要一个专门的IT团队，这也会带来额外的成本4。
四、On-Prem与云服务的对比
参考文章：On-Premise Or Cloud Infrastructure: Which Is Right For Your Business?
云服务，如AWS、Google Cloud或Azure，提供了一种替代on-prem的方法。虽然云服务可能无法提供on-prem同样级别的控制权，但它们能够降低前期投入，并提供更好的扩展性5。
五、结论
选择on-prem还是云服务取决于企业的具体需求和目标。总的来说，on-prem可以提供更高的控制权和安全性，但同时也需要较高的前期投入和维护成本。
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ᅟᅠ ᅟᅠ ᅟᅠ ᅟᅠ ᅟᅠ ᅟᅠ ᅟᅠ ᅟᅠ ᅟᅠ ᅟᅠ ᅟᅠ ᅟᅠ ᅟᅠ ᅟᅠ ᅟᅠ ᅟᅠ ᅟᅠ ᅟᅠ ᅟᅠ ᅟᅠ
Wikipedia. On-premises software↩︎
Techopedia. What does On-Premises Software mean?↩︎
Datamation. Cloud vs. On-Premise: Cost (TCO) Calculator↩︎
Information Age. The hidden costs of on-premises software↩︎
Skyhigh. Cloud vs On-Premise Software↩︎
