裸金属服务器实现技术及应用场景

最早前，企业都别无选择地使用传统服务器，根据项目需求先进行采购，然后找机房托管，运维人员再去机房给物理机做配置、数据备份、维修维护等。不仅部署周期长，配置繁杂，而且占用极高的人力成本。

后来出现了虚拟化，比如最出名的VMware软件，以及Xen，KVM等技术，能够实现在单台或多台物理机上进行虚拟化，将物理资源切分成虚拟资源提供给用户。虚拟化的好处就在于用户不用单独花费成本采购服务器，而是在一台物理机上新建虚拟机，每个项目都放在一个虚拟机里面。但是当规模越来越大后，虚拟机的管理也越来越困难，问题越来越多。

云计算时代的到来，各大云服务商开始提供云服务器，实际上，这也是在物理机上进行虚拟化的模式，只是由一台物理机变成了成千上万台物理机，规模越大，对技术要求也越高。这种模式不仅要管理海量的虚拟机，还要管理网络资源、存储资源，以及安全防护、数据备份等，因此比VMware又进步了不少。

但现实问题是，底层的每台物理机上都有多个虚拟机，不同客户共享实例，难免存在超售的情况。为能解决这种问题，后来出现了企业实例独享的机型，以确保租户间的资源独享，进而保证稳定性。

然而，这种提供独享实例的模式仍然不能满足一些客户的要求，比如政务、金融等行业，对数据的安全性要求极高，无法与其他用户共用物理资源。怎么办？显然不可能再去使用“笨重”的传统服务器，于是，裸金属服务器应势而生。

裸金属服务器其实就是物理机，但它同时拥有了虚拟机的弹性等特点，裸金属服务器不用再进行虚拟化，也没有性能损耗。它解决了一些对算力、数据安全性要求高的用户需求，具备物理安全隔离能力以及较高的网络包转发能力和极低的网络延迟。

在市场需求的变化下，裸金属服务器的出现备受关注，为何？如果你的应用是在以下这类场景中，或许你能找到答案。

场景一：金融证券等对安全和监管高要求的网站和应用；

场景二：超算中心、基因测序、大数据分析等高性能应用；

场景三：搭建核心数据库，需要资源专享、网络隔离的场景；

场景四：部署手机游戏、手机APP等一站式移动式应用。

总结起来，裸金属服务器之所以走热，其优势就在于具备高安全物理隔离、弹性伸缩、按量付费、秒级交付、可随时自助获取并大规模快速批量部署等功能及特点。它让单用户拥有完全物理隔离的专属裸金属服务器，同时用户可对设备进行批量管理，完全可以像传统虚拟云服务器一样快速灵活申请并管理裸金属服务器集群。

主机参考最新推出了裸金属服务器租用产品，裸金属服务器是一种按需购买、按量付费的物理云服务器租用服务，可以提供云端专用的高性能、安全隔离的物理服务器集群。具体详询主机参考客服zhujicankao.com。

In the early days, enterprises had no choice but to use traditional servers. According to the needs of the project, they first purchase, then find a computer room for hosting, and then the operation and maintenance personnel go to the computer room to do configuration, data backup, maintenance and so on. Not only the deployment cycle is long, the configuration is complex, but also takes up a very high human cost.

Later, virtualization emerged, such as the most famous VMware software, Xen, KVM and other technologies, which can realize virtualization on a single or multiple physical machines, and provide users with virtual resources divided into physical resources. The advantage of virtualization is that users do not need to purchase servers at their own cost, but create new virtual machines on a physical machine, and each project is placed in a virtual machine. But when the scale is larger and larger, the management of virtual machine is more and more difficult, and the problems are more and more.

With the advent of the era of cloud computing, the major cloud service providers began to provide cloud servers. In fact, this is also the mode of virtualization on physical machines. Only one physical machine has become thousands of physical machines. The larger the scale, the higher the technical requirements. This mode not only manages massive virtual machines, but also manages network resources, storage resources, security protection, data backup and so on, so it is much more advanced than VMware.

But the real problem is that there are multiple virtual machines on each physical machine at the bottom, and different customers share instances, which inevitably leads to oversold. In order to solve this problem, an enterprise instance exclusive model was developed to ensure the resource exclusive among tenants and thus ensure the stability.

However, this mode of providing exclusive instances still can not meet the requirements of some customers, such as government affairs, finance and other industries, which have high requirements for data security and can not share physical resources with other users. What should I do? Obviously, it is impossible to use the "bulky" traditional server, so the bare metal server should be born.

The bare metal server is actually a physical machine, but it also has the flexibility of virtual machine and other characteristics. The bare metal server does not need to be virtualized, and there is no performance loss. It solves some users' requirements of high computing power and data security, has physical security isolation ability, high network packet forwarding ability and very low network delay.

With the change of market demand, the emergence of bare metal servers has attracted much attention. Why? If your application is in the following scenarios, maybe you can find the answer.

Scenario 1: websites and applications with high security and regulatory requirements such as financial securities;

Scenario 2: Supercomputing Center, gene sequencing, big data analysis and other high-performance applications;

Scenario 3: build a core database that requires resource exclusive and network isolation;

Scenario 4: deploy mobile games, mobile apps and other one-stop mobile applications.

In summary, the advantages of bare metal servers are high security physical isolation, elastic scaling, pay as you go, second level delivery, self access at any time and large-scale rapid batch deployment. It allows a single user to have a dedicated bare metal server with complete physical isolation. At the same time, the user can manage the equipment in batches, and can apply for and manage the bare metal server cluster as quickly and flexibly as the traditional virtual cloud server.

The host reference newly launched the bare metal server rental product. The bare metal server is a physical cloud server rental service purchased on demand and paid by volume, which can provide a high-performance, secure and isolated physical server cluster dedicated to the cloud. For details, please refer to customer service zhujicankao.com.

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