DELL EMC AX4-5 ユーザーズマニュアル

Appendix:Troubleshooting

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Troubleshooting

This section provides troubleshooting information for your cluster 
configuration. 

Table A-1 describes general cluster problems you may encounter and the 
probable causes and solutions for each problem.

Table A-1.

General Cluster Troubleshooting

Problem

Probable Cause

Corrective Action

The nodes cannot 
access the storage 
system, or the cluster 
software is not 
functioning with the 
storage system.

The storage system is 
not cabled properly to 
the nodes or the 
cabling between the 
storage components is 
incorrect.

Ensure that the cables are 
connected properly from the 
node to the storage system. See 
"Cabling Your Cluster for Public 
and Private Networks" for 
more information.

The length of the 
interface cables 
exceeds the maximum 
allowable length.

Ensure that the fibre optic 
cables do not exceed 300 m 
(multimode) or 10 km (single 
mode switch-to-switch 
connections only).

One of the cables is 
faulty.

Replace the faulty cable.

Switching zone is not 
configured correctly.

Verify that all switched zones are 
configured correctly.

LUNs are not assigned 
to the hosts.

Verify that all LUNs are assigned 
to the hosts.

The cluster is in a 
SAN, and one or more 
zones are not 
configured correctly.

Verify the following:

• Each zone contains only one 

initiator (Fibre Channel 
daughter card).

• Each zone contains the 

correct initiator and the 
correct storage port(s).