Reference Guide

64 Troubleshooting
You are using a Dell
PowerVault MD3000
or MD3000i storage
array and the Host
Group or Host-to
Virtual Disk Mappings
is not correctly
created.
Verify the following:
• Host Group is created and the
cluster nodes are added to the
Host Group.
• Host-to-Virtual Disk Mapping
is created and the virtual disks
are assigned to the Host Group
containing the cluster nodes.
You are using a
Dell|EMC storage
array and Access
control is not enabled
correctly
Verify the following:
• EMC® Access Logix™
software is enabled on the
storage system.
• All logical unit numbers
(LUNs) and hosts are assigned
to the proper storage groups.
You are using a Fibre
Channel storage array
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).
You are using a Fibre
Channel storage array
and 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)
Table A-1. General Cluster Troubleshooting (continued)
Problem Probable Cause Corrective Action