HI,

We are planning to change from IBM servers to Dell Power edge M620 blade servers. right now our SAN storage EMC VNX 5300 with 2 brocade DS-5100B switches. 

now how the M620 blade servers will connect to our existing EMC SAN storage???Dell people they suggest 2 brocade M5424 FC8 switches. but i don't understand how this configuration will be done since i already have 2 brocade switches???? 

after searching on dell website i found Pass Through module and i understand that it will only pass the fiber connection to the existing brocade switches. so no need for the 2 brocade switches which dell propose.

 Can you help me in this and share with me your idea about this issue. shall i go to switches or get Pass Through module.