"Cluster" of six Virtualization Technologies in HP-UX"

Article Title: HP-UX six virtualization technology "cluster ". Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.

From the perspective of HP-UNIX, virtualization technology and its related products can be divided into six basic categories based on the number of cores, servers and the number of operating system instances involved. The following shows the categories and their relationships with the processing core, servers, and operating system instances.

This article introduces the third type: Cluster (multiple servers, one operating system)

The cluster technology allows multiple servers to work collaboratively, just like a computing environment. Technically, each server runs its own operating system, but these servers work together as a whole. The Cluster technology is as follows: Serviceguard Cluster, Extended Campus Cluster, Extended Campus/Extended Distance Cluster, Metro Cluster, and intercontinental Cluster)

1) Serviceguard

A Serviceguard cluster is a network group composed of HP Integrity or HP 9000 servers (called nodes in the Serviceguard group). It has sufficient software and hardware redundancy. In this way, A single point of failure will not cause serious damage to the service. The Serviceguard cluster continues to run when a software or hardware failure occurs. Therefore, this type of cluster has high availability.

Configure as much redundancy as possible for hardware and software When configuring the Serviceguard cluster. To provide the highest availability, Serviceguard is generally used in conjunction with other high availability products, such as elastic Disk/UX And VERITAS Volume Manager (ZFS) use disk arrays of different RAID levels and HP Powertrust power supply (uninterruptible power supply ).

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