Types of clustering systems

Clustering is a virtualization technique to make two or more computers that are running individually act as a single machine. By using this technique, you can distribute a large amount of processing to multiple servers and reduce the overall processing time. In addition, even if a failure occurs on one server, another server continues the work in place of the failed server.

The following types of systems (cluster configuration systems) use clustering.

High Performance Computing clustering (HPC cluster)

In this type of clustering function, multiple servers work in collaboration to enhance the overall processing capacity.

High Scalability clustering (load-balancing cluster)

This clustering function distributes requests from clients to multiple servers in order to balance the processing workload as evenly as possible among the servers.

High Availability clustering (HA cluster)

In a failover cluster, two or more servers share the disks and the primary server (ACTIVE server) executes the processing during the normal operation.

If a failure occurs on the ACTIVE server, the alternate server (STANDBY server) takes over the data and processing. This mechanism is called 'failover.'

This mechanism minimizes the downtime when a failure occurs.

 

The HULFT Clustering function is intended to operate HULFT in a failover clustering environment that is provided by high availability (HA) platforms.

 

For HULFT, the following products support the HULFT Clustering function:

  • HULFT10 for Linux-Enterprise CL License

  • HULFT10 for Linux-Enterprise CL Add License

  • HULFT10 for AIX-Enterprise CL License

  • HULFT10 for AIX-Enterprise CL Add License

  • HULFT10 Cipher Option(AES) for Linux CL License

  • HULFT10 Cipher Option(AES) for Linux CL Add License

  • HULFT10 Cipher Option(AES) for AIX CL License

  • HULFT10 Cipher Option(AES) for AIX CL Add License