Abdulrahman,  Firstly, consider moving this to the proper community to get the most visibility.  You can do so by selecting "Move discussion" in the upper right and choosing:  Support Community > CLARiiON Support Forum  [IMAGE]  In order to compare exactly what your are referring to, can you verify that the rear of your AX4-5i compares identically to the diagram above?  abd.alsoufi wrote:  now as  I understand from the manual the the fiber optics plug in this EMC unit is only to connect other expansions but as there are no extra Storage units but the main one in my case   1) If you are referring to the port outlined in red in the lower left corner of each SP, then that as you point out is for DAE expansion only and is actually a (3Gbps) SAS port.  2) If you do own an AX4-5i, it is the iSCSI model and all front-end connectivity will be 1Gbps iSCSI only   can I use this one fiber optic plug to connect the unit to the network switch ?? and If any body tried that can you tell me what could happen if I did it ??  3) Even if you owned a model with SFP optic transceivers, they would not be an optical Gigabit Ethernet modules so you wouldn't be able to connect them to a "network switch".  They are for connectivity via Fibre Channel.  Any support for 1Gbps or 10Gbps (optical) Ethernet interfaces for host connectivity did not arrive until more recently with the CX4. 
HI every one. I'm new to system administration and my boss asked me to create a small network using EMC AX4-5i storage and some computers for testing purposes, now as  I understand from the manual the the fiber optics plug in this EMC unit is only to connect other expansions but as there are no extra Storage units but the main one in my case  can I use this one fiber optic plug to connect the unit to the network switch ?? and If any body tried that can you tell me what could happen if I did it ??  thanks every one and looking to hear your answers. Abdulrahman
Can I connect one EMC AX4-5i to the network switch using fiber optics cable ?