Editing lun paths – HP XP Array Manager Software User Manual
Page 163
To prepare for an error in storage systems or host ports, you can enhance the system redundancy
by configuring multiple LUN paths, with each using a different port.
•
Response to failures
When a port is disabled because of an error, you can configure LUN paths that temporarily use
alternate ports to continue system operation.
Because allocated volumes belong to a specific host group, the same target host port is set for all
volumes in any given host group. Therefore, when adding or deleting a host port for one or more
volumes, you must select all of the volumes that belong to that host group to maintain consistent LUN
path assignments for all volumes.
You can change host modes and host mode options depending on the situation, for example when
an application is added to the host and the operating system is upgraded.
You can add or exchange HBAs to improve performance and throughput requirements. To edit LUN
paths when replacing a failed HBA or performing a planned HBA replacement, use any of the following
options, depending on your task purpose:
•
Add HBA
•
Exchange HBA
•
Remove HBA
You can use the LUN paths that were set for the old HBA for the new HBA, and delete LUN paths set
for an HBA that is no longer necessary. You can also edit LUN paths for multiple HBAs collectively.
Related topics
• Editing the host mode and host mode options
• Editing LUN paths when exchanging a failed HBA
• Editing LUN paths when adding or exchanging an HBA
• Removing LUN paths after adding an HBA
Editing LUN paths
You can manage the LUN paths between storage systems and hosts by adding or deleting them as
needed.
You manage LUN paths on your storage system by controlling the connections between the storage
systems and hosts. This allows you to better adapt to changing storage system and network conditions.
As conditions change, you can create new paths or delete selected paths on a LUN path basis that
are established between multiple host bus adapters (HBA) of a host within a host group. For example,
some HBAs may become unnecessary when the related applications are unneeded or infrequently
used, and you can delete selected LUN paths for such cases.
Prerequisites
Allocate volumes to the existing hosts.
1.
On the Resources tab, expand the tree for storage systems, hosts, or logical groups to display
volumes.
2.
Select one or more volumes for which you want to edit LUN paths. If selecting multiple volumes,
they must belong to the same configuration host group.
3.
In the selected volume, click More Actions, and select Edit LUN Paths.
User Guide
163