types of cluster

[seenivasan]

Guys,

could please explain how many types of cluster we can configure?(ex:active - passive..etc..)Please explain

Regards,
Seenivasan

[Shibin_2]

You could better do a google search on this. There are different variety such as metro cluster, load balancing etc. The underlying switching mechanism can be active-active / active-passive etc.

[P Arumugavel]

Hi,

Active-Active & Active-Passive cluster defined based on node configuration. In Active-Active cluster if the primary node fails, the adoptive takes the resources and reactivates the services. In Active-Passive, there is no concept of primary node and adoptive node. Both runs the services, if one fails other should ensure the services to be continue of the failed node.

And HA cluster & Load balancer cluster. HA cluster is also called fail over, all the application and resources would be owned by a node or group. If fail happened in primary, the resources should get switched to next available node or group. Load balancing cluster, is improving the performance of the cluster systems. Users request would be server by all nodes, thereby load is getting balanced across all nodes.

I hope it helps.

Rgds...

[Ismail Azad]

Hi,

Adding on...Here you could talk in terms of distance as there is a classification called as "extended distance clusters" when you revolve around the planning of a "disaster tolerant" architecture. You would talk about clusters like campus, metro and continental depending on the distance as you need data in the event of a natural catastrophe as well.

Well cluster architectures could be based on a "shared disk" model or sometimes a "shared nothing" or a shared disk hybrid.

Regards
Ismail Azad