Hyper-V Question of the Week: VMs Require Booting from Virtual IDE Drives, but isn’t SCSI Faster. Are we giving up performance booting from virtual IDE?

Hyper-V Question of the Week: VMs Require Booting from Virtual IDE Drives, but isn’t SCSI Faster. Are we giving up performance booting from virtual IDE?

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We know that Hyper-V virtual machines require booting from virtual IDE. Historically, in the physical world, SCSI can provide better performance than IDE.  Does that mean we’re giving up performance booting from virtual IDE?

On the surface you’d think that is the case as the I/O performance of physical SCSI and IDE devices can differ significantly.  In a Hyper-V environment this is not true for the virtualized IDE and SCSI devices.  In Hyper-V IDE and SCSI devices both offer equally fast I/O performance when integration services are installed in the guest operating system, so requiring to boot from a virtual IDE vs. a virtual SCSI drive does not affect the boot performance of the virtual machine.

 

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Comments
  • <p>&quot; virtual SCSI drive doesn’t not affect the boot performance of the virtual machine.&quot;</p> <p>The double negative makes that a little confusing. &nbsp;Could you state it another way? &nbsp;Or remove the double negative. &nbsp;:)</p>

  • <p>Thanks for pointing that out. &nbsp;I&#39;ll have to fire my proof reader..... &nbsp;wait thats me... &nbsp;:-)</p>

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