HP StorageWorks XP Remote Web Console Software - Manual (Page 48)

km in length and up to two switches are required for distances greater than 0.5 km. If you use
single-mode long wave optical fiber cables, fibre cables up to 30 km in length and up to two
switches are required for distances greater than 10 km. URz operations can be performed at
distances of up to 30 km (18.6 miles) using standard single-mode long wave support. For further
distance, the channel extender connections are required. URz operations can be performed at
distances of up to 30 km (18.6 miles) using standard single-mode long wave support. For distances
greater than 43 km (26.7 miles), approved channel extender products and telecommunications
lines are required.
Figure 8 URz Remote Copy Connection Configuration
48 Requirements and Restrictions for Universal Replicator z/OS Operations