different disk controller for different disks in vmware virtual machine

Could you tell me how to create different disk controller for different disk.
For example I have windows server with  C:  D: E: and F: drives and I want to create one controller for C: , one for D: and one for E: and F:.
And also is it possible to change the settings for already created virtual machine with data on disks.
dedriAsked:
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Andrew Hancock (VMware vExpert / EE MVE^2)Connect With a Mentor VMware and Virtualization ConsultantCommented:
Controllers
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Neil RussellConnect With a Mentor Technical Development LeadCommented:
you can set the Virtual Device node when attaching a new disk. What exactly is it you are trying to achieve?
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Add a new controller.

Add a new disk and when creating the virtual disk specify the disk ID as 1:0, 2:0 etc

this will create the new disk on that controller.
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Andrew Hancock (VMware vExpert / EE MVE^2)Connect With a Mentor VMware and Virtualization ConsultantCommented:
So when adding a New Hard Disk, or Change the Current Hard Disk to SCSI Device Node (1:0), (2:0) etc will add a new controller. e.g. Controller1, Controller2 etc
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Andrew Hancock (VMware vExpert / EE MVE^2)Connect With a Mentor VMware and Virtualization ConsultantCommented:
you can add 4 Controllers per VMControllers in a VM
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Andrew Hancock (VMware vExpert / EE MVE^2)Connect With a Mentor VMware and Virtualization ConsultantCommented:
Controllers2
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Neil RussellTechnical Development LeadCommented:
Yes as per my first post. You select a new virtual device node (2:0) for example.
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dedriAuthor Commented:
And after creating a new controller and attach existing disk to this controller, can I further change the controller type to Paravirtual
What will be the effect of this operation if possible. SHould I expect any problems with data on disk, or it is not a risk operation?
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Andrew Hancock (VMware vExpert / EE MVE^2)Connect With a Mentor VMware and Virtualization ConsultantCommented:
Keep the controller to a supported controller within the OS.

and also it is not wise to change the controller of a VM, once it has data on it.
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