Dual Domain, Dual I/O Modules

For MSA60/70 with two I/O modules, dual domain is supported via two SAS cables attached to a compatible HP SmartArray such as the P800.

With a single MSA RAID array that contains two I/O modules, the proper wiring is to connect both SAS cables from the P800 SmartArray card to both I/O modules on the "In" ports of the MSA (and nothing connected to the "Out" ports of the MSA).

                                             
           IO Module     IO Module           
+--------+-----------+-+-----------+--------+
|        | IN    OUT | | IN    OUT |        |
|        |+---+ +---+| |+---+ +---+|        |
|        |+-|-+ +---+| |+-|-+ +---+|        |
+--------+--|--------+-+--|--------+--------+
            |             |                  
            +------+    +-+                  
                   |    |                    
                   |    |                    
                   |    |                    
                +--v----v--+                 
                |          |                 
                |          |                 
                |          |                 
                |    HP    |                 
                |SmartArray|                 
                |   P800   |                 
                |          |                 
                |          |                 
                |          |                 
                +----------+                 

For multiple MSA arrays, the cabling is somewhat similar:

                                                 
               IO Module     IO Module           
    +--------+-----------+-+-----------+--------+
    |        | IN    OUT | | IN    OUT |        |
    |        |+---+ +---+| |+---+ +---+|        |
    |        |+-|-+ +-|-+| |+-|-+ +---+|        |
    +--------+--|-----|--+-+--|--------+--------+
                |     |   +---+                  
+---------------+     |   |                      
|                     +-------+                  
|                         |   |                  
|                     +---+   |                  
|   +--------+--------|--+-+--|--------+--------+
|   |        | IN    O|T | | I|    OUT |        |
|   |        |+---+ +-v-+| |+-v-+ +---+|        |
|   |        |+-|-+ +---+| |+---+ +-|-+|        |
|   +--------+--|--------+-+--------|--+--------+
|               |         +---------+            
|               |         |                      
|               +---------|---------+            
|                         |         |            
|               +---------+         |            
|   +--------+--|--------+-+--------|--+--------+
|   |        | I|    OUT | | IN    O|T |        |
|   |        |+-v-+ +---+| |+---+ +-v-+|        |
|   |        |+---+ +---+| |+-|-+ +---+|        |
|   +--------+-----------+-+--|--------+--------+
|                             |                  
+----------------------+    +-+                  
                       |    |                    
                    +--v----v--+                 
                    |          |                 
                    |          |                 
                    |          |                 
                    |    HP    |                 
                    |SmartArray|                 
                    |   P800   |                 
                    |          |                 
                    |          |                 
                    |          |                 
                    +----------+