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

The storage system is

Ensure that the cables are

access the storage

not cabled properly to

connected properly from the

system, or the cluster

the nodes or the

node to the storage system. See

software is not

cabling between the

"Cabling Your Cluster for Public

functioning with the

storage components is

and Private Networks" for

storage system.

incorrect.

more information.

 

 

 

 

The length of the

Ensure that the fibre optic

 

interface cables

cables do not exceed 300 m

 

exceeds the maximum

(multimode) or 10 km (single

 

allowable length.

mode switch-to-switch

 

 

connections only).

 

 

 

 

One of the cables is

Replace the faulty cable.

 

faulty.

 

 

 

 

 

Switching zone is not

Verify that all switched zones are

 

configured correctly.

configured correctly.

 

 

 

 

LUNs are not assigned

Verify that all LUNs are assigned

 

to the hosts.

to the hosts.

 

 

 

 

The cluster is in a

Verify the following:

 

SAN, and one or more

• Each zone contains only one

 

zones are not

initiator (Fibre Channel

 

configured correctly.

 

daughter card).

 

 

 

 

• Each zone contains the

 

 

correct initiator and the

 

 

correct storage port(s).

Appendix:Troubleshooting

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Dell EMC AX4-5 manual Troubleshooting