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Yes, I agree I need to re-phrase.
Currently our OS/Hardware team built the Domain Controller with the following config:
OS - RAID 1 Array, Controller 1, Channel 1
Everything else - RAID 5 Array, Controller 1, Channel 1
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We requested that he remove the RAID 5 Array and rebuild with the Microsoft Best Practice (Three RAID 1's, detailed above).
However, he contended that we would gain nothing from this, due to the fact that the arrays would be on the same channel on the same controller.
I contended that the performance with three RAID 1's would be better than one RAID 1 (OS) and one RAID 5 (everything else) due to the fact that the log files and the database each needed their own array because of the differing read/write operation concentrations.
All else being equal, who is right?
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