HP StorageWorks XP24000 Continuous Access Software User and Reference Guide, v01 (T5278-96002, June 2007)

for Mainframe, and TrueCopy Asynchronous for Mainframe) can share the same remote copy
connections.
Remote Copy Con
nections
Figure 8 on page 47 shows the remote copy connection configurations for Fibre Channel interface
Continuous Access operations. The MCU and RCU of ea ch Continuous Access pair must be c onnected
via multimode
shortwave or single-mode longwave optical fibrecables. If youuse multimodeshortwave
optical fibre c
ables, 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, fi bre c ables up to 30 km
in
length an
d
up to two switches are require d for distances greater than 10 km. Continuous Access
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.
Shortwave: 0.5 km
Longwave: 10 km
Unrestricted distance
MCU/RCU
RCU/MCU
MCU/RCU
RCU/MCU
MCU/RCU
RCU/MCU
MCU/RCU RCU/MCU
MCU/RCU
RCU/MCU
Shortwave: 1.5 km
Longwave: 30 km (Max)
Multimode shortwave optical fibre cables
up to 0.5 km
Single-mode longwave optical fibre cables
up to 10 km
Switch
Channel Extender
A
TM telecommunications lines
Figure 8
Remote Copy Connection Configurations
Note: F
or
Fibre Channel interface connections, you can use the same switches as for ordinary switch
connections, and no special settings are required for the storage systems.
A Fibre Channel interface connection provides three different con figurations (see HP StorageWorks
XP24000 LUN Manager User’s Guide):
•
Direc
tconnection (see Figure 9 on pag e 48): Two devices are connected directly together.
•
Switch connection (see Figure 10 on page 48): Up to three optical fibre cables are connected
together via the switches to connect the devices. Up to two switches can be used.
•
Exte
nder connec tion (see Figure 11 on page 49): Channel extenders and switches are used to
connect the devices across large distances.
XP24000ContinuousAccessSoftwareUserand ReferenceGuide
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