About Dynamic Multi-Pathing in Veritas InfoScale Operations Manager
Dynamic Multi-Pathing lets you direct the communication to the storage through different sets of nodes to achieve failover and load balancing. When a connection fails, Dynamic Multi-Pathing spreads the communication to alternate paths automatically.
In certain circumstances, you may want to perform maintenance operations on the array ports or on the initiators in your data center. For example, upgrade the firmware that has been installed on one or more initiators. You need to temporarily disable the multipathing paths that connect these array ports and the initiators to the storage, and re-enable these paths after the maintenance operations are completed. Veritas InfoScale Operations Manager provides you the options of disabling the multipathing paths by choosing an array, virtualization server, or initiators in your data center.
In the Management Server console, dynamic multipathing operations and discovery of multipathing paths are supported on the following:
-
Physical hosts that have Dynamic Multi-Pathing installed.
-
VMware ESX servers that have Dynamic Multi-Pathing for VMware installed.
Veritas InfoScale Operations Manager also supports the discovery of EMC PowerPath/Virtual Edition (VE) of ESX Server and Microsoft MPIO . For these technologies, Veritas InfoScale Operations Manager discovers the multipathing information that includes the paths under the metanodes, path count, active_path count, and the state of each path.
Before you disable the paths, you must ensure that the connected resources have alternate paths to the underlying physical storage. Veritas InfoScale Operations Manager provides you the options to verify the associated volumes, disk groups, hosts, and the applications that currently use the storage that is connected through the selected initiators or array ports. You need to have administrative privileges on host, enclosure, or on virtualization server to perform these path maintenance operations.
Note: You cannot use Veritas InfoScale Operations Manager to manage the paths for Windows managed hosts.
More Information
Related information