Host Path Redundancy

Host Path Redundancy

The SAN Host Path Redundancy check enables you to view the non-redundant host storage paths. It helps you identify the host enclosure errors along with the resolution to fix the errors.


Note
All fabrics that are discovered must be licensed or this feature will be disabled in the Cisco Nexus Dashboard Fabric Controller Web Client. When the feature is disabled, a notification is displayed stating unlicensed fabrics are discovered.

Host Path Redundancy determines that the ports are part of the same enclosure by using the enclosure name displayed in NDFC. If the enclosure names are not exactly the same, then they will be viewed as separate devices. When the names are not exactly the same, the user must manually change the names in the edit enclosure dialog in NDFC, in order for Host Path Redundancy and other features to consider them the same device.

Choose SAN > Host Path Redundancy.

This section includes the following topics:

Diagnostic Test

Procedure

Step 1

Choose SAN > Host Path Redundancy > Diagnostic Test.

Step 2

Under the Diagnostic Test tab, use the check boxes to select the host redundancy optional checks.

Step 3

Check the Automatically run tests every 24 hours check box to enable periodic running of the checker. The checker will run every 24 hours starting 10 minutes after the server starts.

Step 4

Check Limit by VSANs check box, and select inclusion or exclusion. Enter VSAN or VSAN range in the text field to include or skip the host enclosures that belong to VSANs from the redundancy check.

Step 5

Check other optional checks to perform the relevant check.

Step 6

Click Clear Results to clear all the errors displayed.

Step 7

Click Run Tests Now to run the check at anytime.

Step 8

The results are displayed in the relevant tabs that are next to the Diagnostic Test tab.

Hostpath Errors

Choose SAN > Host Path Redundancy > Hostpath Errors tab to display the host path redundancy errors table. The top of the table displays the colored Good, Errored, and Skipped host enclosure counts.

The following table describes the fields that appear on SAN > Host Path Redundancy > Hostpath Errors.

Field

Description

Host Enclosure

Specifies the hosts that contain the errors. These are counts of each path in the host enclosures seeing an error.

Storage Enclosure

Specifies the connected storage that is encountering the error.

Description

Specifies the description of the error.

Fix

Specifies a solution to fix the error. Point to the error to view a solution to fix the error.

First Seen

Specifies when the error was first seen.

The following table describes the action items, in the Actions menu drop-down list, that appear on SAN > Host Path Redundancy > Hostpath Errors.

Action Item

Description

Ignore Host

Select a row from the table and choose Ignore Host to add the selected rows host enclosure to an exclusion list. The errors from that host will no longer be reported and the current errors will be purged from the database.

Ignore Storage

Select a row from the table and choose Ignore Storage to add the selected rows storage enclosure to an exclusion list.

Ignore Host Storage Pair

Select a row from the table and choose Ignore Host Storage Pair to add the selected rows host-storage pair enclosure to an exclusion list.

Clear Results

Select a row from the table and choose Clear Results to clear the results.

Ignored Host

Choose SAN > Host Path Redundancy > Ignored Host tab to display the list of host enclosures that have been skipped or ignored by the redundancy check along with the reason for skipping.

The following table describes the fields that appear on SAN > Host Path Redundancy > Ignored Host. Select a host enclosure and click Unignore to remove the host from the ignored list and begin receiving errors about the host you had chosen to ignore.

Field

Description

Host Enclosure

Specifies the hosts that contain the errors.

Ignore Reason

Specifies the reason for which the host was ignored.

The following reasons may be displayed:

  • Skipped: Enclosure has only one HBA.

  • Host was ignored by the user.

  • Host ports managed by more than one federated servers. Check can't be run.

  • Skipped: No path to storage found.

Ignored Storage

Choose SAN > Host Path Redundancy > Ignored Storage tab to display the list of storage enclosures that have been selected to be ignored during the redundancy check.

The following table describes the fields that appear on SAN > Host Path Redundancy > Ignored Storage. Select a storage enclosure and click Unignore to remove the storage from the ignored list and begin receiving errors about the storage you had chosen to ignore.

Field

Description

Storage Enclosure

Specifies the connected storage that is encountering the error.

Ignore Reason

Specifies the reason for which the storage was ignored.

Ignored Host Storage Pair

Choose SAN > Host Path Redundancy > Ignored Host Storage Pair tab to display the list of host-storage pairs that have been selected to be ignored during the redundancy check.

The following table describes the fields that appear on SAN > Host Path Redundancy > Ignored Host Storage Pair. Select a row and click Unignore to remove the host-storage pair from the ignored list.

Field

Description

Host Enclosure

Specifies the hosts that contain the errors.

Storage Enclosure

Specifies the connected storage that is encountering the error.

Ignore Reason

Specifies the reason for which the storage was ignored.