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What is Vertical and Horizontal Clustering?

Deepak Dew
Ranch Hand

Joined: Mar 29, 2004
Posts: 79
Hi
Can someone please tell me What is Vertical and Horizontal Clustering in weblogic?
Also Vertical and Horizontal scaling of hardware/applications?
Thanks

Deepak
[ December 20, 2004: Message edited by: Deepak Dew ]

IBM Certified Advance WAS Administrator on 6.1, BEA Certified WebLogic Server 81 Administrator, Vitria Certified BusinessWorks Administrator, SCJP 2
David Chung
Greenhorn

Joined: Dec 15, 2004
Posts: 11
Deepak,

Vertical (or linear) clustering is running multiple server instances on the same hardware to better utilize memory or threading and allow for protection against software failure.

Horizontal clustering then is clustering across hardware boundaries for both load balance and failover.

--Dave
Deepak Dew
Ranch Hand

Joined: Mar 29, 2004
Posts: 79
Thanks Dave,
But in vertical clustering I dont see any advantage apart from better utilization of cpu and memory in comparison with horizontal scaling.
Thanks
Deepak
Ravinder Sudhini
Greenhorn

Joined: Aug 29, 2014
Posts: 1
Vertical Clustering can do 2 things as I know:
Let us take an example: 1 Cluster with 2 application servers running on the same box
1) Protection against software failure: If one of the application server run into problems other server can still take the requests
2) Application update without outage: After updating the Application (Ear), Rolling recycle (One application recycle at a time) of application servers need to be performed. This way one server is available to server the request at any time.

Ravinder
 
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subject: What is Vertical and Horizontal Clustering?