ML370 G6 support hyper-v technology ?

I can't think of anything obvious that would prevent it from working.

Did you receive any error messages?

OK
is there any document or PDF file explain how to install and enable hyper-v technology on windows 2008
hyper-v server ?
best regards

Depends on your Processor, you can check from bios, you mention you have problem while installing windows 2008 R2 or hyper role installation?

paste the error/problem
HP-ProLiant-DL370-ML370-G6-ENG.pdf

i have processor model Intel Xeon E5540 is it support hyper-v technology without any problem ?

http://ark.intel.com/Product.aspx?id=37104

The processor supports Hyper-v

But you would have to enable a few extensions in the BIOS to get it working

Intel Virtualization technology or it might say "Intel VT" or "Hardware Virtualization"

Execute disable Bit

Once you have added then you would restart your server and add the role from within Ms Windows 2008 Server Manager.

dear sir
could you please explain the steps in more details ?
best regards

You need to enable Intel Virtualization technology or it might say "Intel VT" or "Hardware Virtualization" in bios to get it working.
Try to find this in your bios setting and enable it.
 
Regards,