INTERVIEW QUESTIONS SAP SAP NETWEAVER DETAILS

Question: What do "shared nothing" and "shared all" mean?

Answer: The term “shared nothing” and “shared all” specifies a type of architecture within an active-active cluster. “Shared nothing” means that every cluster node contains its own data partition, which implicates that these kinds of setup are not highly available due to the fact that in case of a failure the data of the failed node is no longer available. In a “shared all” environment the different cluster nodes that run the same service shares a data partition and accesses the data concurrently.

These options have to be supported by the cluster software. For example, MSCS does not support the “shared all” option.

The term “shared nothing” and “shared all” specifies a type of architecture within an active-active cluster. “Shared nothing” means that every cluster node contains its own data partition, which implicates that these kinds of setup are not highly available due to the fact that in case of a failure the data of the failed node is no longer available. In a “shared all” environment the different cluster nodes that run the same service shares a data partition and accesses the data concurrently.

These options have to be supported by the cluster software. For example, MSCS does not support the “shared all” option. Source: CoolInterview.com

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