Replacing A Fiber Cable - Hitachi XP P9500 User Manual

Replacing a Fiber Cable

If there are multiple active paths for an LU, you can replace a desired cable
while running your applications by placing offline only the path that goes
through the cable to be replaced and using other paths to continue access.
Note
The following procedure is only for replacing a fiber cable.
To replace a fiber cable:
1 Execute the dlmodmset utility for setting the HDLM execution environment
.
ODM to check the NPIV option setting.
# /usr/DynamicLinkManager/bin/dlmodmset -o
The following are execution examples:
Lun Reset
Online(E) IO Block
NPIV Option
Check the NPIV Option line.
2 Place in Offline (C) status the path that goes through the cable to be
.
replaced (path that goes through the HBA to which the cable is
connected).
Depending on the NPIV option setting for the dlmodmset utility checked in
step 1, execute one of the following commands:
¢
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3 Replace the cable.
.
Note
4 Place in Online status the path that goes through the replaced cable.
.
Place in Online status the path that goes through the HBA to which the
replaced cable is connected.
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If the NPIV option is set to off:
Specify the HBA adapter number and bus number, and then execute
the command shown below. The following example shows how to
place the path in Offline (C) status when the path goes through an
HBA whose HBA adapter number is 08 and whose bus number is 11:
# /usr/DynamicLinkManager/bin/dlnkmgr offline -hba 08.11
If the NPIV option is set to on:
Use the fscsi number to execute the command below. The following
example shows how to place the path in Offline (C) status when the
path goes through fscsi number 1 (fscsi1):
# /usr/DynamicLinkManager/bin/dlnkmgr offline -hba 00.01
If you change the port on the Fibre Channel switch or on the storage
system, the path configuration will be changed. Delete the hdisk that
are associated with the cable to be replaced and then reconfigure the
device.
HDLM Operation
Hitachi Dynamic Link Manager User Guide (for AIX(R))
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