TAILIEUCHUNG - The Total Cost of (Non) Ownership of a NoSQL Database Cloud Service

The code executed by the replica proxy for supporting Byzantine clients is presented in Figure 4. To be able to compare if the sequence of operations submitted initially is the same that is submitted at commit time, the coor- dinator also logs the operations and their results as they are executed (line 42). At commit time, if the received list differs from the log, the coordinator discards exe- cuted operations in the current transaction and executes operations in the received list, as any other replica. For discarding the executed operations in the cur- rent transaction, we rely on a widely available database mechanism, savepoints, that enables rolling back all op- erations executed. | Amazon Web Services - The Total of Non Ownership of a NoSQL Database Cloud Service March 2012 - JKI ill amazon M web services The Total Cost of Non Ownership of a NoSQL Database Cloud Service Jinesh Varia and Jose Papo March 2012 Please consult http whitepapers for the latest version of this paper amazon web services Page 1 of 14 Amazon Web Services - The Total of Non Ownership of a NoSQL Database Cloud Service March 2012 Introduction Weighing the financial considerations of owning and operating a data center or co-located facility versus employing a cloud infrastructure or a cloud service requires detailed and careful analysis. In practice it is not as simple as just measuring potential hardware expense alongside utility pricing for compute and storage resources. The Total Cost of Ownership TCO is often the financial metric that is used to estimate and compare direct and indirect costs of a product or a service. While it is challenging to do the right apples-to-apples comparison between on-premises software and a cloud service in this whitepaper we attempt to explain the economic benefits of using a NoSQL non-relational database cloud service such as Amazon DynamoDB over equivalent NoSQL database software that is deployed onpremises or hosted in the cloud. The goal of this whitepaper is to help you understand the different cost factors involved in deploying and managing a scalable NoSQL service or solution. We walk through an example scenario a social game to support the launch of a new movie and highlight the total costs for three different options. We state our assumptions in each option so you can adjust them based on your own research or quotes from your hardware vendors and co-location providers. Major Cost Considerations that Are Often Overlooked When determining the TCO of a cloud-based service it s easy to overlook several cost factors such as administration and redundancy costs which can lead to an inaccurate and incomplete .

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