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Chapter 10 Notes when Using the Multipath Driver
10.1 Configuring a Storage System
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Conditions for LU configuration
Set the Logical Unit numbers (LUNs) for paths in a multipath connection to the same LUNs used on the
storage system.
In the following example, the Multipath Driver will not operate properly if the two paths are mapped to
different LUNs. Set the same LUNs for both paths, as shown on the left side of the following diagram.
Figure 10.1 Use identical LUNs
Storage system
LU0
Same LUN
Storage system
Linux server
CA
CA
LU0
Volume set
LU0
LU0
FUJITSU Storage ETERNUS Multipath Driver V2 User's Guide for Linux
Copyright 2014 FUJITSU LIMITED
Linux server
Storage system
CA
CA
LU0
LU1
Volume set
Different LUN
Storage system
LU0
LU1
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P2U3-0031-15ENZ0
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