Dell EMC AX4-5 manual Troubleshooting

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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