To host servers

 

Processor

Memory

Processor

 

 

 

 

 

 

server

Adapter

 

Adapter

 

 

 

 

 

 

 

 

 

Host

 

 

 

 

Adapter

 

Adapter

Processor

Memory

Processor

server

 

 

 

 

 

 

 

 

 

To storage servers

 

 

 

Storage

 

 

 

 

 

 

 

 

 

Adapter

 

Adapter

 

 

20 port switch

 

 

 

 

 

ooo

 

 

 

 

 

 

16 DDM

 

 

 

 

 

 

20 port switch

 

 

 

 

Figure 12-2 Switched FC-AL disk subsystem

Performance is enhanced since both DAs connect to the switched Fibre Channel disk subsystem back end as displayed in Figure 12-3 on page 259. Note that each DA port can concurrently send and receive data.

258DS8000 Series: Concepts and Architecture

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Image 280
IBM DS8000 manual Memory