Article source: All Cloud Online
In recent years, with the rapid development of cloud computing technology, bare metal and cloud servers have become the two main ways for enterprises to deploy business. Bare metal refers to computing resource services that provide an infrastructure hardware environment but do not include operating systems and middleware. Cloud servers, on the other hand, divide computing resources into multiple virtual machines through virtualization technology, providing elastic expansion and on-demand allocation of resources. Compared with cloud servers, bare metal has different advantages and disadvantages. First of all, bare metal has higher performance and stability, suitable
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What are the differences and advantages and disadvantages between bare metal and cloud servers? Which is better for your business, bare metal or cloud server?
introduction
Cloud computing is a hot topic in the field of information technology today, which provides enterprises and individuals with flexible, efficient, low-cost computing resources and services. The foundation of cloud computing is cloud servers, that is, virtual machines running on the cloud platform, which can dynamically adjust the configuration and number according to the needs of users to achieve elastic scaling. Cloud servers have many advantages, such as:
- Simplified O&M management, users do not need to care about the procurement, installation, maintenance and other issues of hardware devices, but only need to create, delete, start, stop, restart and other operations through the web page or API console.
- Reduced costs, users only need to pay according to the actual resources and time used, do not need to waste money for idle resources, and do not need to prepare excessive resources in advance for sudden traffic spikes.
- Improved availability, users can select different regions and zones to deploy ECSs, achieve disaster recovery and load balancing across regions, and enjoy the high reliability and security provided by the cloud platform.
However, cloud servers also have some limitations, such as:
- Performance loss, because cloud servers are based on virtualization technology, virtualization will introduce certain overhead and delay, resulting in the performance of CPU, memory, disk, network and other resources to decrease. For some performance-critical applications (e.g., high-performance computing, big data analytics, game development, etc.), this performance loss cannot be ignored.
- Resource sharing, because an ECS is multiple virtual machines running on the same physical machine, the resources on the physical machine are shared between them. Although the cloud platform ensures that each virtual machine is allocated a certain resource quota, when other virtual machines are suddenly under high load, it will still affect the current virtual machine usage experience. For some applications that require high stability and isolation (e.g., finance, healthcare, government, etc.), this sharing of resources is unacceptable.
- Functional limitations, because the cloud server is based on virtualization technology, some hardware devices and functions do not support virtualization, or cannot be used normally under virtualization. For example, some special hardware accelerators, network devices, storage devices, etc., may not be recognized or driven under virtualization; Some new features of the processor (e.g., IntelSGX, AMDSEV, etc.) may not be enabled or used under virtualization. This limitation is insurmountable for applications that require the use of these hardware devices and capabilities to improve performance or security (e.g., blockchain, edge computing, machine learning, etc.).
In order to solve these problems, a new type of computing service has emerged, which is bare metal servers. BMS is a computing service between physical machines and cloud servers, which combines the advantages of physical machines and cloud servers while avoiding their disadvantages. So, what exactly is a bare metal server? What are the differences and advantages and disadvantages with physical machines and cloud servers? What business scenarios are BMSs suitable for? This article will answer these questions for you from the following aspects.
What is a BMS?
Bare metal server, as the name implies, is a physical server without any operating system and software installed, it is a dedicated physical machine leased to users by cloud service providers, on which users can freely install and run any operating system and applications, and enjoy physical machine-level performance and isolation. Bare metal server is not only a physical machine, it is a combination of physical machine and cloud service, which has the following characteristics:
- Auto scaling, you can create and release BMSs at any time based on your business needs to adjust resources elastically. BMSs are also fast to create and release, typically taking only a few minutes to complete.
- Network interconnection: BMSs can seamlessly connect with and be compatible with other cloud services provided by the cloud platform, such as network services (such as VPC), storage services (such as EVS disks, object storage, etc.), and database services (such as cloud databases, data warehouses, etc.). In this way, it is convenient for BMSs to communicate and collaborate with users' existing virtualization servers, and can effectively use cloud resources.
- O&M management: BMSs can be managed through the web page or API console provided by the cloud platform, such as monitoring, alarming, backup, recovery, migration, and security. Users do not need to worry about the maintenance and troubleshooting of hardware devices, nor do they need to worry about upgrading and replacing hardware devices.
- Fee optimization: BMSs adopt a pay-as-you-go or prepaid billing model, where users only need to pay according to the actual resources and time used, and do not need to waste funds for idle resources or prepare excessive resources in advance for sudden traffic spikes.
The differences between BMSs and physical machines and cloud servers
As can be seen from the above introduction, bare metal servers have many differences from physical machines and cloud servers, and they also have their own advantages and disadvantages. Below we will compare and analyze these three computing services from the aspects of performance, security, cost, and management.
Performance aspect
In terms of performance, BMSs have high computing performance that is no different from that of physical machines, without the overhead and latency of the virtualization layer, and can make full use of all resources on physical machines. In contrast, due to the influence of virtualization technology, cloud servers will have a certain degree of performance loss in CPU, memory, disk, network, etc. Therefore, in the face of some applications with high performance requirements, bare metal servers have more powerful performance than cloud servers.
Security aspects
In terms of security, BMSs have the same physical isolation advantages as physical machines, and they do not share the same physical machines with other tenants, which can ensure the security isolation of data and applications. In contrast, cloud servers run multiple virtual machines on the same physical machine due to virtualization technology, and although there is a certain degree of logical isolation, there are still some potential security risks. For example, other tenants may steal or tamper with the current tenant's data or applications through some means; or the current tenant
It may be attacked by some virtualization vulnerabilities, resulting in the disclosure or corruption of data or applications. Therefore, bare metal servers have higher security guarantees than cloud servers in the face of some applications with high security requirements.
Cost aspect
In terms of cost, BMSs have pay-as-you-go and prepaid billing models similar to cloud servers, and users can pay according to the actual resources and time used, without wasting money on idle resources or preparing excessive resources in advance for sudden traffic spikes. In contrast, physical machines usually require users to purchase one-time or lease for a long time, and users need to spend a lot of money and time for the procurement, installation, maintenance, upgrade, replacement, etc. of hardware equipment, and it is difficult to achieve flexible adjustment of resources. Therefore, in the face of some applications with flexible cost requirements, BMSs have lower cost overhead than physical machines.
Management aspects
In terms of management, BMSs have the same advantages as ECSs in simplified O&M and network interconnection, and users can use the webpage or API console provided by the cloud platform to perform O&M management, such as monitoring, alarming, backup, recovery, migration, and security. Users do not need to worry about the maintenance and troubleshooting of hardware devices, nor do they need to worry about upgrading and replacing hardware devices. At the same time, BMSs can seamlessly connect with and be compatible with other cloud services provided by the cloud platform, such as network services, storage services, and database services. In this way, it is convenient for BMSs to communicate and collaborate with users' existing virtualization servers, and can effectively use cloud resources. In contrast, physical machines usually require users to perform their own O&M management, such as monitoring, alarming, backup, recovery, migration, and security. Users need to spend a lot of manpower and material resources for the maintenance and troubleshooting of hardware devices, and it is difficult to achieve docking and compatibility with other cloud services. Therefore, in the face of some applications that require simple and efficient management, BMSs have a better management experience than physical machines.
What business scenarios are BMSs suitable for?
From the above analysis, it can be seen that bare metal server is a computing service that combines the advantages of physical machine and cloud server, which not only has physical machine-level performance and security, but also has cloud service-level elastic scaling and network interconnection. Therefore, BMS is suitable for the following business scenarios:
- Business scenarios that require high performance, such as high-performance computing, big data analysis, and game development. These business scenarios need to make full use of all resources on the physical machine, such as CPU, memory, disk, network, etc., to achieve the best computing efficiency and user experience. Bare metal servers can provide high computing performance that is no different from physical machines without the overhead and latency of the virtualization layer.
- Business scenarios with high security requirements, such as finance, healthcare, and government. These business scenarios need to ensure the security isolation of data and applications to prevent them from being stolen or tampered with by other tenants or attackers. BMSs can provide the same physical isolation benefits as physical machines, and do not share the same physical machine with other tenants.
- Business scenarios with special functional requirements, such as blockchain, edge computing, and machine learning. These business scenarios require the use of hardware devices and features to improve performance or security, such as special hardware accelerators, network devices, storage devices, new features of processors, and so on. Bare metal servers give users the freedom to install and run any operating system and application, support any hardware device and function, and have no virtualization technology limitations.
- Business scenarios that require flexible costs, such as e-commerce, social networking, and media. In these business scenarios, you need to create and release computing resources at any time based on business needs to achieve elastic adjustment of resources. BMSs can adopt a pay-as-you-go or prepaid billing model, where users only need to pay for the resources and time they use, and do not need to waste money on idle resources or prepare excessive resources in advance for sudden traffic spikes.
- Business scenarios that require simple and efficient management, such as the Internet, education, and scientific research. These business scenarios need to be managed through the web page or API console provided by the cloud platform, such as monitoring, alarming, backup, recovery, migration, and security. At the same time, it also needs to communicate and collaborate with other cloud services provided by the cloud platform, such as network services, storage services, and database services. BMSs can be managed through the webpage or API console provided by the cloud platform, and can also be seamlessly connected to and compatible with other cloud services provided by the cloud platform.
epilogue
BMS is a new type of computing service that combines the advantages of physical machines and cloud servers while avoiding their disadvantages. It not only has physical machine-level performance and security, but also cloud-level auto scaling and network interconnection. It is suitable for some business scenarios that have special requirements for performance, security, functionality, cost, management, etc. If you want to experience the benefits of BMS, you can use the following links to learn more and apply for a trial: