Collecting the Sample of Data
This chapter explains how to collect data write samples that can be used with the VRAdvisor wizard. VRAdvisor uses the sample of data for analysis. We recommend that you collect the samples of data using the volumes that are to be part of the VVR configuration you are planning to set up. To collect a representative sample of data, we recommend that you collect the sample of data over a period of 7 to 14 days. Make sure that the collection period includes times of peak usage for your application, so that the collected data reflects your actual requirements.
Note
The data must be collected for a minimum of seven days.
VRAdvisor calculates an optimum size of the Storage Replicator Log (SRL) and the network for your VVR configuration using a sample of the write statistics. For VRAdvisor to use the sample of data for analysis, the data must be in one of the required input formats.
Depending on the operating system on which you are collecting data, you can either collect the sample of data using VRAdvisor or another tool. VRAdvisor collects the sample of data in a required format. If the data is collected using other tools, you may need to use the scripts provided with VRAdvisor to convert the data to a required format. For details, refer to the section for your platform.
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