If you use the same set of load-balanced servers for multiple applications or websites, port rules are based on the destination virtual IP address (using virtual clusters).ĭirect all client requests to a single host by using optional, single-host rules. Specify the load balancing behavior for a single IP port or group of ports by using port management rules.ĭefine different port rules for each website.
#Microsoft terminal server load balancing windows
Manage and configure multiple NLB clusters and the cluster hosts from a single computer by using NLB Manager or the NLB Windows PowerShell cmdlets. To support manageability, you can do the following with NLB: Pipelining allows requests to be sent to the NLB cluster without waiting for a response to a previous request. Remove hosts from the cluster when the load decreases.Įnable high performance and low overhead through a fully pipelined implementation. Support up to 32 computers in a single cluster.īalance multiple server load requests (from the same client or from several clients) across multiple hosts in the cluster.Īdd hosts to the NLB cluster as the load increases, without causing the cluster to fail. To support scalability, you can do the following with NLB:īalance load requests across the NLB cluster for individual TCP/IP services. For NLB clusters, scalability is the ability to incrementally add one or more systems to an existing cluster when the overall load of the cluster exceeds its capabilities. Scalability is the measure of how well a computer, service, or application can grow to meet increasing performance demands. Recover and redistribute the workload within ten seconds. To provide high availability, NLB includes built-in features that can automatically:ĭetect a cluster host that fails or goes offline, and then recover.īalance the network load when hosts are added or removed. High availabilityĪ high availability system reliably provides an acceptable level of service with minimal downtime. The following sections describe how NLB supports high availability, scalability, and manageability of the clustered servers that run these applications. NLB is useful for ensuring that stateless applications, such as web servers running Internet Information Services (IIS), are available with minimal downtime, and that they are scalable (by adding additional servers as the load increases).
#Microsoft terminal server load balancing Offline
When it is ready, the offline computer can transparently rejoin the cluster and regain its share of the workload, which allows the other computers in the cluster to handle less traffic. For load-balanced applications, when a host fails or goes offline, the load is automatically redistributed among the computers that are still operating. NLB allows all of the computers in the cluster to be addressed by the same set of IP addresses, and it maintains a set of unique, dedicated IP addresses for each host. NLB can also direct all traffic to a designated single host, which is called the default host. You can also add hosts dynamically to the cluster to handle increased load. You can configure the load that is to be handled by each host. NLB distributes incoming client requests across the hosts in the cluster. The servers in an NLB cluster are called hosts, and each host runs a separate copy of the server applications. By combining two or more computers that are running applications into a single virtual cluster, NLB provides reliability and performance for web servers and other mission-critical servers.
The Network Load Balancing (NLB) feature distributes traffic across several servers by using the TCP/IP networking protocol. Maintaining Business Continuity of Virtualized Environments with Hyper-V Replica: scenario overview
Scale-Out File Server for Application Data Overview This topic describes the NLB feature and provides links to additional guidance about creating, configuring, and managing NLB clusters. By managing two or more servers as a single virtual cluster, NLB enhances the availability and scalability of Internet server applications such as those used on web, FTP, firewall, proxy, virtual private network (VPN), and other mission-critical servers. This topic provides an overview of the Network Load Balancing (NLB) feature. Applies To: Windows Server 2012 R2, Windows Server 2012
0 kommentar(er)
