Getting very simple hardware implementation (in my case, with a DS713 +) In contrast: - Extension of the volume was dreadfully long: about 48 hours. However, this inconvenience is punctual - Since - but I am sure of the cause-effect link - my iSCSI volume "back" more automatically restart the PC In the end, some doubts therefore, hence the "3 star" product which I could have put 4.