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Foglight for Storage Management Shared 4.6 - User and Reference Guide

Getting Started Monitoring Storage Performance Investigating Storage Devices Investigating Storage Components Investigating VPLEX Storage Troubleshooting Storage Performance Managing Data Collection, Rules, and Alarms Understanding Metrics Online-Only Topics

Reviewing and Editing Host-Port Assignments

After enabling dependency processing, it is a good idea to review the list of inferred hosts derived from this process. You can verify that the inferred hosts are correct for the specified port, fix errors, and provide missing host names. For this task, you use the Review Physical Host FQDNs dashboard.

1
On the Storage Environment dashboard, in the Administration tab, click Review Physical Host FQDNs.
b
Click Edit Host FQDN.

Running Dependency Processing Manually

If your environment has changed, you can update inferred-host-to-storage connections immediately rather than waiting for a scheduled processing.

On the Review Physical Host FQDNs dashboard, use one of the following options:

Refresh—Runs the host-resolution analysis to identify inferred hosts for ports handling storage I/O.
Collect Zone Information—Dependency processing automatically collects zone information on a nightly basis. If your environment has changed, use this button to collect updated zone information for FC switches in your environment and run the host-resolution analysis. The collection and analysis can take between five to ten minutes, possibly longer depending on the complexity of the environment.

Customizing Helper Strings for Dependency Processing

Zone names are set by the Storage Administrator and typically include the names of devices connected to ports. The dependency processing algorithm processes the zone name strings using various helper strings to identify the possible host names associated with a port. A DNS lookup is performed on the possible names to identify the most likely host FQDN. You can customize the helper stringers for your environment and improve the accuracy of the inferred hosts.

1
On the Storage Environment dashboard, in the Administration tab, click Review Physical Host FQDNs.
2
Click Change Zone Processing Params.
3
To specify IP addresses to ignore during dependency processing, click Invalid IPs. Click Add, specify an IP address, and click Add.
Some DNS setups always return a default IP address when a DNS lookup of a possible host name fails. If a DNS lookup of a host name returns an IP address listed in the Invalid IP table, the host name is considered invalid for dependency processing purposes.
5
To specify strings used as separators for readability in the zone names, click Split Strings. Click Add, specify a string, and click Add.
6
To specify strings that you want to convert to other strings before performing a host name DNS lookup, click Translation Strings. Click Add, specify a string found in the zone information and the new string to use, and click Add.

Reviewing Inferred Hosts

You can see a list of inferred hosts on the Infrastructure dashboard. From this dashboard, you can explore hosts and change their host port assignments if necessary. If you are interested in monitoring and collecting detailed data about an inferred host, you can set up an agent to monitor the host. This action moves the host from the inferred list to the appropriate monitored host list.

For more information about the Infrastructure dashboard, see the Managing the Infrastructure Cartridge section of the Foglight for Storage Management online help.

5
Click the SAN Topology tab.
6
Click a Cloud icon to show the connections through a port in a Details window.
7
If the assigned host is incorrect, click the Host Port icon and select the desired action, such as Assign to Different Host or Remove Link to Host.
NOTE: If your user credentials do not include the role Administrator, you need to ask someone with this role to create an agent to monitor the host.
10
Click Configure Host Monitoring.
For help with the wizard, see “Adding a Monitored Host” in the Managing the Infrastructure Cartridge section of the Foglight for Storage Management online help.
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