HP StorageWorks XP Remote Web Console Software - Manual (Page 70)

8. HP Representative: If the user plans to use the Local TrueCopy for Mainframe Asynchronous
timer type option, set the SVP clock to local time so that the TrueCopy for Mainframe
Asynchronous time-stamps will be correct.
9. HP Representative: Install the TrueCopy for Mainframe remote copy connections between the
MCU(s) and RCU(s). This hardware (optical fibre cables, switches, etc.) is supplied by the
user. Distribute the paths between different storage clusters and ESCDs or switches to provide
maximum flexibility and availability. The logical paths between the MCU and RCU must be
separate from the logical paths between the host and RCU. For Fibre Channel interface
connections, all remote copy activities between two XP disk array (for example, TrueCopy for
Mainframe, TrueCopy for Mainframe Asynchronous, XP Continuous Access Sync, and XP
Continuous Access Async) can share the same remote copy connections.
Remote Copy Connections
“Fibre Channel Remote Copy Connection Configurations” (page 71) shows the remote copy
connection configurations for Fibre Channel interface TrueCopy for Mainframe operations. The
MCU and RCU of each TrueCopy for Mainframe pair must be connected via multimode shortwave
or single-mode longwave optical fibre cables. If you use multimode shortwave optical fibre 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 fibre cables, fibre cables up to 30 km in length
and up to two switches are required for distances greater than 10 km.
TrueCopy for Mainframe operations can be performed at distances of up to 30 km (18.6 miles)
using standard single-mode longwave support. Long-distance solutions are provided using approved
channel extenders and communication lines.
For more information on approved channel extenders, contact HP Technical Support.
Direct connections up to 10 km with single-mode, longwave, Fibre Channel interface cables are
supported. The maximum distance for the best performance may differ in relation to the link speed.
The next table shows the relation between the link speed and the maximum distance for best
performance.
Table 26 Relationship between the Link Speed and the Maximum Distance for Best Performance
Maximum Distance for Best Performance Link Speed
10 km 1 Gbps
6 km 2 Gbps
3 km 4 Gbps
2 km 8 Gbps
For Fibre Channel interface connections, you can use the switches as for ordinary switch connections,
and no special settings are required for the XP disk array.
Fibre Channel interface connection provides three different configurations (see also the HP
StorageWorks XP24000/XP20000 LUN Manager User's Guide):
70 Preparing for TrueCopy for Mainframe Operations