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<img src='content_image/1004654.jpg'>

## 4.6.2 Storage connectivity 

a. UTP is unshielded twisted pair. Consider the use of category 6 UTP for 1000 Mbps connections. 

b. UTP is unshielded twisted pair. Consider the use of category 6 UTP for 1000 Mbps connections. 

c. Or 50 µm MM OM3, but OM4/OM5 is highly recommended. MM = Multi-Mode SM = Single-Mode 

d. Or 50 µm MM OM3, but OM4 is highly recommended. MM = Multi-Mode SM = Single-Mode 

Connectivity to external I/O subsystems (for example, disks) is provided by FICON channels and zHyperLink$^{5}$. 

