Check category: Availability

Check description: Checks the Array Support Library (ASL) and Array Policy Module (APM) levels across systems in a single cluster.

Check procedure:

• Identifies systems that are part of the same cluster and that have the same version of Storage Foundation / InfoScale installed.

Check recommendation: Ensure that the ASL versions are consistent for all systems in a cluster that have the same operating system and Storage Foundation / InfoScale version, and are connected to the same storage enclosure.

Check category: Availability

Check description: Checks whether all Dynamic Multi-Pathing (DMP) paths to the array are in the active/enabled state.

Check procedure:

• Identifies all the DMP subpaths for all the disks available on the system.

Check recommendation: Enable all the disabled controllers on the system. You can do so using DMP commands provided in the documentation links.

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Check category: Availability

Check description: Verifies that the Dynamic Multi-Pathing (DMP) restore daemon is running on the system.

Check procedure:

• Verifies that the Dynamic Multi-Pathing (DMP) restore daemon is running on the system.

Check recommendation: Automatic path failback stops if the DMP restore daemon is stopped. You are advised to start the DMP path restoration thread. Note:This is not a user land daemon that you can find using ps command, but a kernel thread that you can see only through vxdmpadm command. Click the documentation links below to find the details of using vxdmpadm command.

Check category: Availability

Check description: Verifies that the Dynamic Multi-Pathing (DMP) restore daemon is configured consistently across all systems in a cluster.

Check procedure:

• Determines which systems are part of the same cluster.

Check recommendation: Ensure that the DMP daemon is configured consistently for all systems in a cluster that are connected to the same enclosure and use the same Storage Foundation / InfoScale version.

Check category: Availability

Check description: Checks that attached enclosures are properly claimed by Device Discovery Layer (DDL) and Dynamic Multi-Pathing (DMP).

Check procedure:

• Determines the array type of attached enclosures, the enclosure names, and the list of enclosures that are not claimed by any Array Support Library (ASL).

Check recommendation: Ensure that enclosures connected to the system are properly claimed by DDL, and that the ASL/APM appropriate for the enclosure is installed on the system.

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Check category: Availability

Check description: Checks whether the system has any disabled HBA controllers.

Check procedure:

• Discovers all the HBA controllers that are present on the system.

Check recommendation: Enable all the disabled HBA controllers on the system.

Check category: Availability

Check description: Checks that packages installed across all the nodes in a cluster are consistent

Check procedure:

• Identifies the packages installed on all the nodess in a cluster.

Check recommendation: Ensure that packages installed on all the nodes in a cluster are consistent and package versions are identical. Inconsistent packages can cause errors in application fail-over.

Check category: Best practices

Check description: Checks whether the installed Storage Foundation / InfoScale products are at the latest software patch level.

Check procedure:

• Identifies all the Storage Foundation / InfoScale products installed on the system.

Check recommendation: To avoid known risks or issues, it is recommended that you install the latest versions of the Storage Foundation / InfoScale products on the system.