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After double-clicking MCDC_START.jar, there is a prompt asking which application should be used to open the file

Applies to

MetroCluster
MC_DC
Windows

Issue

After double-clicking MCDC_START.jar, there is a prompt asking which application should be used to open the file.

Cause

Java is either not installed or .jar files are not properly associated with Java. Install Java or check the file association is correct.

Solution

Re-run the JDK installer and, select repair and install the feature JAR Files Association under OpenJDK Runtime.

The collect.dcl log reports "collection attempt timed out"

Applies to

MetroCluster
MC_DC

Issue

The collect.dcl log reports " collection attempt timed out "

Cause

Network device is not reachable.

Solution

  1. Check that the device can be reached directly from the client hosting MCDC. If ping works, try telnet or ssh depending on the device type.
  2. Check that the address of the device is correct in MCDC (if a switch or bridge)
  3. If a controller reports this error, ensure that the controller name is resolvable by the host.
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How to troubleshoot MetroCluster check connection errors

Applies to

MetroCluster
metrocluster check
connection
ONTAP 9

Description

This article describes how to troubleshoot MetroCluster check connection errors.

MetroCluster check reports the following errors on the connections object:

ClusterA::> metrocluster check show
Last Checked On: mm/dd/yyyy hh:mm:ss
Component           Result
------------------- ---------
nodes               ok
lifs                ok
config-replication  ok
aggregates          ok
clusters            ok
connections         warning
6 entries were displayed.
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How to identify that not all initiators into a MetroCluster FC fabric run at the same speed?

Applies to

MetroCluster FC
Brocade
Cisco

Description

To avoid performance issues, all initiators into the MetroCluster storage backend have to run at the same speed. This article describes how to identify and address this issue.

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How many adapters are to be connected to each Fabric in a MetroCluster?

Applies to

MetroCluster FC
Fabric

Description

This article describes supported adapter setups in MetroCluster FC configuration.

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How to identify cross-connected shelf modules in a MetroCluster configuration

Applies to

ONTAP 9
MetroCluster

Description

This article describes how to troubleshoot cross-connected shelf modules.

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