Dell PowerVault 770N (Deskside NAS Appliance) - Manual (Page 87)

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Troubleshooting
Dell™ PowerVault™ NAS Fibre Channel Cluster Systems Installation and Troubleshooting Guide
This appendix provides troubleshooting information for NAS cluster configurations.
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.
The length of the interface cables
exceeds the maximum allowable
length.
One of the cables is faulty.
Access Control is not enabled
correctly.
Ensure that the cables are connected properly from the
node to the storage system. See " Cabling Your Public
and Private Networks " for more information.
Ensure that the fiber optic cables do not exceed 300 m
(multimode) or 10 km (single mode switch-to-switch
connections only).
Replace the faulty cable.
Verify the following:
All switched zones are configured correctly.
The EMC® Access Logix™ software is installed
on the storage system.
All LUNs and hosts are assigned to the proper
storage groups.
One of the nodes takes a long
time to join the cluster.
The node-to-node network has
failed due to a cabling or
hardware failure.
Long delays in node-to-node
communications may be normal.
Check the network cabling. Ensure that the node-to-
node interconnection and the public network are
connected to the correct NICs.
Verify that the nodes can communicate with each other
by running the ping command from each node to the
other node. Try both the host name and IP address
when using the ping command.
Attempts to connect to a
cluster using Cluster
Administrator fail.
The Cluster Service has not been
started.
A cluster has not been formed on
the system.
The system has just been booted
and services are still starting.
Verify that the Cluster Service is running and that a
cluster has been formed. Use the Event Viewer and
look for the following events logged by the Cluster
Service:
Microsoft Cluster Service successfully formed a cluster
on this node.
or
M
icrosoft Cluster Service successfully joined the cluster.
If these events do not appear in Event Viewer, see the
Microsoft Cluster Service Administrator's Guide for
instructions on setting up the cluster on your system
and starting the Cluster Service.
Using Microsoft®
Windows NT® 4.0 to remotely
administer a cluster generates
error messages.
Normal. Some resources in
Windows® Storage Server 2003,
Enterprise Edition are not
supported in Windows NT 4.0.
Dell strongly recommends that you use Windows XP
Professional or Windows Server 2003 for remote
administration of a NAS cluster.
Unable to add a node to the The new node cannot access the Ensure that the new cluster node can enumerate the