We are having two vm hosts running on VMWARE ESX 3.0.2 on HP DL servers. We connected iSCSI storage using drive QLAN 4050c. Its connected through hardware initiator using HP MSA i1510. We installed few machines using this storage and everything works fine. But now , we noticed that neither we can create a new machine nor create new folder through SSH in that storage. We have rebooted VM hosts, iSCSI controller. We have enabled ESX firewall to allow swiscsi also. But no success. We dont want to re-install the whole thing. There are 10 VMs running now. Any expertise help is very much appreciated.