Andreaas Mettas, You can, the T140 supports adding an H330 or H730p hardware raid controller. Now in regards to the virtual disk, you can migrate it from one S140 to another, but you can't migrate the Virtual Disk to the H330/H730. You would need to backup the data, delete the virtual disk and then recreate it after installing the hardware controller.  Hope this helps.
Hello i want to buy the dell power edge t140 and i want to create raid 1. onboard all servers have the s140 raid controler?and i can add a slot hardware controler whenever i want after that?
Raid