Storage and Backups-Netapp
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
- 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.
- Check that the address of the device is correct in MCDC (if a switch or bridge)
- If a controller reports this error, ensure that the controller name is resolvable by the host.
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.
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.
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.
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.
How to address and identify systems that connect to the each fabric of a MetroCluster using the same ASIC
Applies to
ONTAP 9
MetroCluster
Description
This article describes how to address and identify systems that connect to the each fabric of a MetroCluster using the same ASIC.
How to troubleshoot an ISL down in Fabric MetroCluster (Cisco)
Applies to
- MetroCluster
- Cisco switches
- ISL down
Description
This article is not intended as a comprehensive troubleshooting guide, but as a tool to assist in ISL link troubleshooting. For further assistance please engage NetApp Technical Support via a Technical Support Case.
- Whenever troubleshooting ISL link a number of factors should be considered:
- What is the distance of the ISL links?
- Have the ISL ports been configured correctly as per the installation guide?
- What type of ISL is being used? Direct Link? DWDM?
- What additional components are in the link? Are there any patch panels?
- What is the health of the components on the link?
MetroCluster Kernel table might not be completely populated after an upgrade
Applies to
- MetroCluster
- ONTAP 9.3P8 and earlier
- ONTAP 9.4P2 and earlier
Issue
- A risk called "A Metrocluster Kernel table is not populated correctly." is displayed in ActiveIQ.
- METROCLUSTER AUSO TRIGGER FAILED Autosupport message received during ONTAP upgrade
How to troubleshoot MetroCluster check node errors
Applies to
- MetroCluster
- metrocluster check
- Node errors
Description
MetroCluster check reports errors on the node object:
ClusterA::> metrocluster check show
Last Checked On: mm/dd/yyyy hh:mm:ss
Component Result
------------------- ---------
nodes warning
lifs ok
config-replication ok
aggregates ok
clusters ok
5 entries were displayed.
