You create a virtual machine (VM) on a Windows Server 2008 R2 Hyper-V server. The VM has a single VHD file that is connected to an IDE controller. You need to add five new virtual disks to the VM…

Question

Options

• AAdd the virtual disks to IDE Controller 0.
• BAdd the virtual disks to an existing SCSI controller.
• CRemove the virtual DVD drive, and add the virtual disks to IDE Controller1.
• DAdd five SCSI controllers to the VM, and add one virtual disk to each SCSI controller.

• A
  12% (5)
• B
  81% (35)
• C
  5% (2)
• D
  2% (1)

Explanation

Use of virtual SCSI devices requires integration services to be installed in the guest operating SCSI devices. Each virtual machine supports up to 256 SCSI disks (four SCSI controllers with each controller supporting up to 64 disks). SCSI controllers use a type of device developed specifically for use with virtual machines and use the virtual machine bus to communicate. The virtual machine bus must be available when the guest operating system is started. Therefore, virtual hard disks attached to SCSI controllers cannot be used as startup disks. By default, SCSI commands are filtered in Hyper-V in Windows Server 2008 R2. Although it is possible to disable filtering of SCSI commands, we do not recommend that you arbitrarily disable filtering because it represents a possible security risk (when filtering of SCSI commands is turned off, SCSI commands pass directly from the virtual machine to the storage stack on the management operating system). Programmatically disabling SCSI filtering is supported in Hyper-V in Windows Server 2008 R2 and may be required for certain storage management applications. You should only disable SCSI filtering after consulting with your storage vendor and determining that it is necessary for application compatibility. Although the I/O performance of physical SCSI and IDE devices can differ significantly, this is not true for the virtualized SCSI and IDE devices in Hyper-V. Hyper-V. IDE and SCSI devices both offer equally fast I/O performance when integration services are installed in the guest operating

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