For recovery purposes I would use a separate VHD for the OS and the Exchange 
database / logs, and then keep both of them on separate arrays. With that said 
you should be able to throw all the exchange files (database and logs) on the 
same volume as long as you are obtaining the IOPS required from the Exchange 
calc. Since IO has been reduced so much I don't think that should be an issue.






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On Sat, May 9, 2015 at 10:11 AM -0700, "J- P" <[email protected]> wrote:
Hi all,

I'm cross-posting this because despite it being for Exchange, it does pertain 
Windows as well.

Back in the physical days , it was always OS, LogFiles, and DB on separate 
disks/volumes/arrays etc..
Now with virtulization, is it still recommended /best practice to create 
separate VHD's for the OS/DB/Log files for performance gain?

TIA




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