Replacing a fiber cable

To replace a fiber cable:

If there are multiple online paths for a device in an LU, you can replace a desired fiber cable while running your applications by placing offline only the path that goes through the fiber cable to be replaced, and using other paths to continue accesses.

The following steps show an example procedure for replacing a fiber cable. Note that this procedure only applies to replacing a fiber cable.

This example assumes the system configuration shown below:

1. Place in Offline (C) status the path that goes through the fiber cable to be replaced (path that goes through the HBA to which the fiber cable is connected).

   For example, to place in Offline (C) status the path that goes through the HBA with host port number 0001 and bus number 0000, execute the following command:

   # /opt/DynamicLinkManager/bin/dlnkmgr offline -hba 0001.0000

   While the path that goes through the HBA with host port number 0001 is placed Offline, the status of the path that goes through the HBA with host port number 0002 is Online.

   Figure. When the status of the path that goes through the fiber cable to be replaced is Offline(C)

2. Replace the fiber cable for the path that has been placed in Offline(C) status.

   In this example, replace the fiber cable connected to the HBA with host port number 0001.

3. Place in Online status the path that goes through the replaced fiber cable (that is, the path that goes through the HBA connected to the fiber cable).

   For example, to place in Online status the path that goes through the HBA with host port number 0001 and bus number 0000, execute the following command:

   # /opt/DynamicLinkManager/bin/dlnkmgr online -hba 0001.0000

4. Check the path information.

   For example, execute the following command:

   # /opt/DynamicLinkManager/bin/dlnkmgr view -path

   For details about the path information, see view (displays information).