Did you install the MD3000i host software (not (just) the management software)? If not, that could be the cause of your problem.
Hi,  I have been facing issue with MD3000i. I'm able to create virtual disks and mounted in 2003R2 (x64) and 2008 web servers. But after logging into the MDstorage device via MS iSCSI operating system is dead slow. I am unable to open Device manager, Windows explorer etc. RDP of the server is also taking 2-3 minutes to show the log in screen. After a waiting a quite lot time i could see the disk management snap-in. But i couldn't initialize the drive as i couldn't move the mouse in fact. Some how i have disconnected iSCSI by unmounting the space and logging off from storage device. OS performance came back to normal at the same moment ! I'm not sure whether i have done something wrong with the configuration. Below is the configuration. Two switches are present in the rack. the servers are already connected to these switches for the front end application and all working fine. NIC cards are teamed for all servers and connected to both the switches. I have connected one more NIC from all servers for iSCSI traffic and assigned IP MD3000i is having 2 RAID controllers with two iSCSI ports each. All NIC are connected to both the switches for redundancy. IP configuration (IPs are not real as we are using public IPs) All servers are running in same subnet (192.168.0I .0) with 192.168.0.8, 192.168.0.9, 192.168.0.10, 192.168.0.11 for the teamed interface. All applications, RDP etc are available through this IP. The MD3000i management ports are been configured by rack team and the IPs are 192.168.0.40  and 192.168.0.41 I have configured the MD3000i iSCSI ports with below settings  iSCSI0 -> NIC Port 0 -> Switch 1 port 21 --->  IP is  192.168.0.39iSCSI0 -> NIC Port 1 -> Switch 2 port 21 ---->  IP is  192.168.0.42iSCSI1 -> NIC Port 0 -> Switch 1 port 22 ---->  IP is  192.168.0.43iSCSI1 -> NIC Port 1 -> Switch 2 port 22 ---->  IP is  192.168.0.44 Then i have assigned IP for each NICs which are dedicated for iSCSI traffic in each of the server as   192.168.0.45 - .48 Downloaded MS iSCSI (for 2003R2) and configured the discovery and logged in to the device after it got detected in 'target' tab.  The issue starts here. My OS stopped responding there after.  Please suggest me what Iam doing wrong. I dont have two subnets to configure. I have only one subnet with number of public IPs available. I have seen Dell configuration documents saying different subnets. Is that issue ? How can i configure the MD3000i device with only one subnet. Please help. Thanks in advance.  
OS is hang after mounting space from MD3000i 