text: – 2076-92F 
  – 2076-A9F 
  
  The control enclosures can connect to 8 Gbps and 16 Gbps SAN switches. With an optional 
  10 Gbps Ethernet card to 10 Gbps Ethernet switch (for iSCSI traffic) and FCoE switches. 
  
  Model 2076-624 with 25 Gb Ethernet card can be used for RDMA (iSER). For more 
  information, see 3.7.4, “iSCSI Extensions for RDMA (iSER)” on page 62. 
  
  **3.19.2 Back-end storage subsystems**
  
  When connecting a back-end storage subsystem to IBM Storwize V7000, follow these 
  guidelines: 
  
  (cid:2) Connect all storage ports to the switch up to a maximum of 16, and zone them to all of the 
  Storwize V7000 ports. 
  
  (cid:2) Zone all ports on the disk back-end storage to all ports on the Storwize V7000 nodes in a 
  clustered system. 
  
  (cid:2) Ensure that you configure the storage subsystem LUN-masking settings to map all LUNs 
  that are used by the Storwize V7000 to all the Storwize V7000 WWPNs in the clustered 
  system. 