Questions continue to pour in from all parts of the country regarding ECMPS and the Client Tool. We have even received at least one question, addressed, "ECMPS Mailbag". The writer of the mailbag appreciates that direct appeal for the question to be included in a mailbag post on the blog.
No matter how your questions are addressed, we are happy to answer your questions about ECMPS and the Client Tool.
In this edition of the mailbag, we will answer questions about "hidden" QA tests and how to estimate the disk space you will need to store your data on a shared network database.
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"Hidden" QA TestQuestionI ran an evaluation on my emissions data which indicated that there are problems with some of the RATAs, but I do not see any RATAs in the Client Tool? Where are these RATAs?
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Looking for my DataAnswerDear Looking,
During the initial synchronization, the ECMPS Client Tool retrieves what is termed Test History data. These data are the essential QA/Cert data which the Client Tool needs from all previously submitted QA/Cert data. The Test History data are a subset of all of the previously submitted QA/Cert data. The Client Tool needs these data in order to perform the data evaluations in the Client Tool which require data from previously submitted QA/Cert data. For example, the bias adjustment factor (BAF). You can view these data through the Test History Report which is found in the QA/Cert Module of the Client Tool. The data which are retrieved in the initial synchronization are all of the previously submitted QA/Cert data from 2003 to the present. Going forward the Test History data will automatically be in your Client Tool because it is generated in the Client Tool every time an evaluation is run on new QA/Cert data.
If you would like to view all of the details of the previously submitted tests, use the Retrieve module to retrieve all of the data (e.g. run data, summary data) for any of the QA/Cert data which have been previously submitted.
For more information about the initial synchronization, view the previous post on
initial synchronization. (This post does not use the term Test History data because it had not been adopted at that time, but Test History data is part of supplementary data.)
Network Database Disk Space EstimatesQuestionWhat is a good estimate of how much disk space I will need to store my data on a shared network database?
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Diligent DBA (Database Administrator)AnswerDear Diligent,
A number of stakeholders are trying to plan what they will need to support a shared network database installation of the ECMPS Client Tool. In this type of configuration, there is a network server which hosts the local Client Tool database. All of the users share that database by having their installation of the Client Tool point to that database.
In order to set up this type of configuration, stakeholders need a server class computer with an instance of Microsoft SQL Server 2005 installed. The question becomes how big does the disk space need to be to support the data which this local database will hold.
In the local Client Tool database, no matter whether it is the stand-alone version or the shared network version, there are four types of data which are stored that depend on who is using the database. These data are the monitoring plan, the QA and certification, the emissions, and the evaluation results data. These data will increase according to two factors. The more facilities which are added and the more data maintained in the database over time.
For the most part, all of the other data in the local Client Tool database will be the same no matter who is using the Client Tool. These so-called meta data which include data such as lookup codes and information on how the evaluation checks are run do not change. After you have installed the database, these data will not increase over time.
Of the data that will increase over time, emissions data are by far the most important in increasing the size of the database. Consequently, as time goes on, the only data that really take up any amount of space are the emissions data.
By our estimates, the emissions data for one quarter for one monitoring plan takes an average of 12 MB of disk space. In order to estimate your disk space needs you can use this number to cover all of the necessary disk space.
For example, if your database will host 50 separate monitoring plans (which is the equivalent to the number of EDRs which you currently submit), you will need approximately 600 MB of disk space per quarter. If you continue to maintain your emissions data in the local Client Tool database, you will need to plan for using an additional 600 MB of disk space each quarter.
If you have a question for the ECMPS Mailbag, simply send an email to
ecmps-testing@pqa.com.
Labels: Mailbag