Storage network connectivity question

Dear All,

I need some advice regarding connectivity for our storage unit. As you will understand i am a beginner in storage management so i would appreciate your understanding!

We have the following configuration at the moment:

- 1 x CX4-240 Storage unit

- 2 ESXi servers in a HA cluster (vSphere version 5.1 U1)

Currently our CX4-240 storage unit is connected as below:

SP A has 2 Fibre cables connected to our CISCO switch

SP B has 2 Fibre cables connected to our CISCO switch

and on our ESXi servers:

ESXi1 has 2 FoE cables connected to our CISCO switch

ESXi2 has 2 FoE cables connected to our CISCO switch

 

We would like to connect another 2 fibre cables (one on each SP) from the storage to the switch and then present the extra path to both ESXI servers. How do we do that? If i am not mistsaken on the ESXi side we just need to rescan the HBA adaptors but what needs to be done on the storage level? Do we need to manually register the new paths to each server?

Thank you in advance for your help

Charis