HP XP Continuous Access Software - Manual (Page 59)

Remote copy connections
Figure 9 shows remote copy connection configurations for Continuous Access XP Journal operations.
The primary and secondary arrays of each Continuous Access XP Journal pair must be connected using
optical fiber cables. If you use multimode shortwave optical fiber cables, fibre cables up to 1.5 km in
length and up to two switches are required for distances greater than 0.5 km. If you use single-mode
longwave optical fiber cables, fibre cables up to 30 km in length and up to two switches are required for
distances greater than 10 km. You can perform Continuous Access XP Journal operations at distances of
up to 30 km (18.6 miles) using standard single-mode longwave support. For greater distances, channel
extender connections are required. You can perform Continuous Access XP Journal operations at
distances of up to 30 km (18.6 miles) using standard single-mode longwave support. For distances greater
than 43 km (26.7 miles), approved channel extender products and telecommunications lines are required.
Figure 9 Continuous Access XP Journal remote copy connection configuration
The remote copy connection between primary and secondary array provides the following configurations:
• Direct connections
Figure 10 Direct remote copy connections
• Switch connections
Continuous Access XP Journal user guide 59