Key Points of Data Center Network Planning

Source: Internet
Author: User
Tags node server
Enterprise data centers can achieve effective data exchange that is not supported by enterprises' Heterogeneous Data environments, and comprehensively, centrally, proactively, and effectively manage and optimize IT infrastructure, it achieves high manageability and availability of information systems, ensures smooth business operation and timely delivery of services, and finally wins users with good services. Enterprise data centers achieve the goal of data sharing and utilization by achieving a unified data definition and naming rules and a centralized data environment. Enterprise data centers are divided into department-level data centers, enterprise-level data centers, Internet data centers, and host-managed data centers by scale. Enterprises can run a variety of applications through small to large data centers. A typical enterprise data center often involves components of multiple suppliers and products, including networked devices, servers, and storage devices. These components need to be put together to ensure they can run as a whole.

We know that the data center is the provider center of enterprise application services and the center of data computing, exchange, and storage. It integrates advanced network technology and storage technology, carries more than 80% of service requests and data storage in the network, and provides a service and operation platform for the healthy operation of the customer's business system. The data center should adopt a separate architecture of services, applications, and storage, effectively reducing the cost of management and maintenance, and meeting the increasing demand for system resizing for business data. A complete data center consists of network systems, application service systems, storage systems, remote disaster recovery systems, and network management systems. The data center relies on the network system. Therefore, the high reliability of the network system platform should be protected first to avoid the impact of network system faults and performance bottlenecks on key business operations of enterprises. Three-layer switching technology can be used to effectively suppress broadcast storms and ensure data transmission for key services. Link redundancy and load balancing technology can be used to ensure high availability of the system, improve Network Transmission Performance and eliminate network bottlenecks. I. Data Center Network Construction Planning and Design Principles 1. Scalability: to adapt to business development, demand changes, and application of advanced technologies, the data center network must be scalable enough to meet the development needs. If a reasonable modular design is adopted, network devices with high port density should be used as much as possible, and layer-3 routing functions should be provided on each layer of the network as much as possible, so that the entire data center (IDC) network has a strong routing scalability. Scalability of functions is the basis for IDC to provide value-added services as it develops. 2. Availability includes network device and network redundancy. Key devices adopt carrier-level full redundancy design and redundant network design. Each layer adopts dual-Host Mode and full redundancy connection between layers. Multiple redundancy technologies are provided to provide value-added redundancy design at different levels. 3. The purpose of flexibility and flexibility is to achieve customization based on the needs of different users in the data center, networks/devices can flexibly provide various common network interfaces and reasonably match network modules according to different requirements. 4. manageability of the manageability network is the foundation for successful IDC operation management. A variety of optimized and manageable information should be provided. The complete QoS function provides SLA assurance, a complete SLA management system, multi-vendor network device management capabilities, network performance analysis, and accurate and timely network fault alarms and billing. 5. Security and security are the most important issues for IDC users. They are also the key to IDC construction, including physical space security control and network security control. 2. Data center network cabling planning: for a dynamic and constantly evolving data center environment, more powerful network connections remain the same. Whether it is an enterprise or a public service data center, it is necessary to ensure that the network infrastructure can provide scalable bandwidth, redundant business backup, flexibility, security, and ease of movement, increase, and change. To ensure service reliability, data centers must use high-density, easy-to-use, and deployed high-quality cabling systems. Data center data centers should adopt fiber-optic network cabling so that enterprises can implement data center applications more economically to further meet the needs of data storage and fast data exchange between servers and switches in the LAN, it is easy to upgrade networks in the future, saving investment and avoiding waste. It provides us with a flexible, secure, and cost-effective cabling system. Iii. Centralized Management Plan for the data center KVM network KVM refers to "keyboard, display, and mouse", which together are called a group of KVM consoles. The main purpose of the KVM switch is to allow a unified group of KVM consoles to connect to many devices (including network devices and servers), which allows users to access and control many computers or servers from the console. The data center KVM solution provides the most reliable, flexible, and secure remote access and control for multiple users. Data Centers generally use a collection of digital and analog KVM switches to achieve centralized network management, the IDC data center environment becomes concise and bright, and has an efficient, secure, simple, and orderly centralized control environment. The "independent from the Internet" analog KVM solution is usually most suitable for small and medium data centers. For the "in-network" Digital KVM solution, it is the most suitable for supporting large distributed data centers nationwide or globally. The KVM switch and centralized management software are combined to provide control and management functions for multiple data centers. Whether it is regional or global management, data center personnel can use a single IP address from a single screen to completely control many data centers in the enterprise. Iv. Network Storage and Cluster Planning of data centers network storage there are currently three main methods to connect storage devices to servers: Das (Direct Attached Storage, direct connection to storage), NAS (network attached storage, network attached storage), San (storage area network, storage area network ). San is particularly suitable for service environments with large data volumes such as server clusters and disaster recovery. San is a high-performance network established at the backend of the server to connect storage devices such as servers, disk arrays, and tape libraries. San combines various storage devices into a storage network for centralized data management. San is centered on data storage and adopts a scalable network topology. It provides multi-channel data exchange among any nodes in the San through direct connection of optical channels with high transmission rates, data Storage Management is also concentrated in a relatively independent storage Region network. The data center provides application services for the entire network. Generally, these services include some key services (such as ERP, mrp ii, his, and PACS) and other functional services (such as web, FTP, mail, DHCP, DNS, and wins ). Cluster technology is used for key services and important function services to provide redundancy and load balancing, which can effectively ensure efficient and secure network operation. A well-configured application server group can separate the application platform from the service platform, reducing the difficulty of network management and improving the network operation efficiency. With minimal user intervention, the highest availability can be achieved, this reduces management costs. A cluster is composed of two or more servers (nodes) that provide one or more application services in a group. Compared with dedicated servers, the cluster system provides higher availability and scalability, and is an effective way to provide high availability and enhance the manageability of enterprise application software. High Availability: When a node server or application service fails, the applications running on this server will be automatically taken over by other servers in the cluster system, the client will be able to quickly connect to new application services, minimizing server and application downtime. High scalability is manifested in the fact that clusters allow increasing processing capacity or storage capacity without interrupting services, thus improving system scalability. Key business applications in enterprises can adopt cluster systems to provide high-availability and stable application services. 5. Data Center comprehensive network management planning the network management system is a window for network administrators to understand network performance and is also an important tool for evaluating and adjusting network availability. Network management can identify critical resources, network traffic, and network performance, configure device failure thresholds, and submit accurate end-to-end analysis reports. More importantly, through network management, enterprises can set availability policies to automatically start when the system fails or performance declines. Network management systems can be divided into two types based on their functions: one is network device management, which mainly installs network management software, server management software, and disk drive management software, to monitor network traffic and device status. The other is network Desktop Management, which provides remote management, remote configuration, remote control, and other functions for servers or clients, so that management personnel can complete most of the technical support work without leaving the data center. With the development of data centers, new requirements for system and network management are put forward. Network management must go out of the device management circle, provide a clear view of application performance, and then provide tools to help users Ensure application performance. In addition, it will better support mobile devices, network integration and security management. Because the boundaries of data centers may exceed the boundaries of traditional data centers, network management ensures the powerful performance of distributed applications and ubiquitous data access. Network management of data centers should effectively and reasonably manage and coordinate network devices and servers of various brands, so that devices can play the maximum role and fully implement network functions. Click here to view the original text

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