Here is a link to the manual: ftp://ftp.dell.com/Manuals/all-products/esuprt_ser_stor_net/esuprt_poweredge/poweredge-2950_owner's%20manual_en-us.pdf  Check out page 41.  Virtualization is turned off by default on the PE 2950.  Enable the option in the F2 bios.

Regards,

I got that setting is was enable even. Will server 2008 r2 standard 64 edition support it or not ,may be problem from OS...

There no option like this on BIOS setup (f2) 

All versions of 2008 R2 support virtualization/Hyper-V, so it should not be an OS issue.

All processors in a 2950, all system revisions, and BIOS versions should support VT ... what processor is in it?  What is your BIOS version?

BIOS is the latest, and the E5310 supports VT - there should be no reason that VT is not available in the BIOS to enable (see Geoff's link to the BIOS option in the manual) and certainly no reason it would not be available in the OS (if enabled).

BIOS version is 2.7.0  

OK let me try withe server 2012 may be it works 

Thank for help

in the bios for the pe2950 open the CPU menu, then you will find "Virtualiztion Technology" 

Enable it and save the settings.