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HyperV  IDE or Scsi for VMs?

Posted on 2011-03-21
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I have a 2008 R2 SP1 HyperV server.
I am creating Server and Desktop VMs.
Under the settings of the VM, the hard drives are put under the IDE controller by default, should I move it to the SCSI?  
If so, why?
Thanks
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Question by:ie0
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James Haywood earned 2000 total points
ID: 35184182
You can only boot from an IDE connected VHD. The VM will not boot if connected via SCSI.

Further VHDs can be connected via either IDE or SCSI. The main difference between the two is the fact SCSI can handle more drives than IDE (the same as physical in the real world). A few people have said connected via virtual SCSI is faster than virtual IDE but I have never noticed a signifiant difference. Saying that i always assign my data drives as SCSI for the extra flexibility.
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