>>I am working on a new installation. The company DBA sent me email with directions where to install (attach) my database. It looks like she created two folders, one for mdf and another for .ldf. Her email says "Make sure to use default file directory for DB install (E:\AppName\data and E:\AppName\log"
>>
>>Do I understand correctly that she wants the mdf and ldf to be placed in two different directories? Why would they use this approach?
>>
>>TIA
>
>Found this recent article that confirms it's still being considered a best practice
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>http://sqlmag.com/storage/sql-server-storage-best-practices
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>See also
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>https://msdn.microsoft.com/en-us/library/bb402876.aspx
>
>and this nice presentation by Jes Borland
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>http://www.brentozar.com/archive/2012/09/how-sql-server-works-log-file-video/

I do not have time to read, but are you sure is best practice to put it in different folders and not drives?? Does not make sense to me, they should be in different drives if possible for performance reasons, but folders are meaningless...