Detailed explanation of Win2008 failover cluster

What is a failover cluster? I believe many users are quite vague about this concept. The failover cluster, that is, the server cluster, is composed of separate computers, which can prevent single server failure and cause all services to fail. . What are the updates and improvements for failover clusters under Windows 2008?

I. New Features of Failover Clustering

1. New Confirmation Wizard Features

In order to fully realize the benefits of high availability, all configurations must be carefully performed. , including servers, networks and storage. The new Failover Cluster Installation and Configuration Confirmation Wizard for Windows Server 2008 enables users to confirm whether the system, storage, and network configuration is suitable for integration. Some of the tests performed by the new validation wizard include:

Node testing to verify that the server is running the same operating system version and that the same software update has been made.

Network testing to determine if a planned cluster network meets specific needs, such as whether there are at least two separate subnets for network redundancy

storage tests, and analyzes whether the storage is properly stored Configured so that all shared disks can be read through all cluster nodes and to confirm that the storage meets specific needs.

2. Increased scalability of large volume data

Windows Server 2008 includes support for clustered storage of globally unique identifiers (GUIDs) or GUID partition tables (GPTs). Unlike master boot record (MBR) disks, GPT disks can have partitions larger than 2000GB and built-in redundancy. GPT has more advantages than MBR because it allows up to 128 partitions per disk and supports 18 alphabytes of data, allowing initial and backup partitioning of redundancy and supporting unique disks. With the partition ID.

Second, Failover Cluster Improvements

Windows Server 2008 Failover Clustering includes the following improvements to cluster configuration, management, and operations:

Improved cluster setup and migration : The simplified Cluster Setup Wizard enables users to complete cluster setup in one go. It also implements scriptable scriptability for the cluster to automate the configuration process. The migration process for existing clusters has also been simplified. Can a resource group be set up from running Windows Server? It was implemented in a cluster of 2003 and used in a cluster running Windows Server 2008.

Simplified management interface: After the wizards and interfaces have been improved, management tasks have been simplified and administrators have been able to centrally manage applications without having to focus on their clusters.

Improved stability and security for increased usability. The way clusters interact with storage has been improved, so quorum resources are no longer a single point of failure.

Improved network connectivity and security: Network health and security are improved by integrating Ipv6 with a DNS (Domain Name System) server that does not rely on legacy NetBIOS (Network Basic Input Output System) At the same time, other improvements in network connectivity have made the enterprise network more stable and more secure. Previous123Next page Total 3 pages