Make sure your array is running the latest DSM code; previous revs of code had iSCSI issues with VMware ESXi 5.
I've also had this happen on older DSM code and a restart of the array resolved it. You might also try that.
Make sure your array is running the latest DSM code; previous revs of code had iSCSI issues with VMware ESXi 5.
I've also had this happen on older DSM code and a restart of the array resolved it. You might also try that.