R720 iDRAC SD Card

Dear all 

we  ordered Dell R720 with 2 GB SD cards. but there is no SD cards in the server, I can see near to power supply, there is slots for SD cards but those are empty.

but there is an SD card 8GB for iDRAC vflash. can we create a paritition on that vflash & install the VMware ESXI 5.5 please reply..

Thanks in advance