HP Storage Essentials V5.1 User Guide Second Edition (Linux Release) (T4283-96056, November 2006)

Discovering NAS Devices, Tape Libraries, Switches and Storage Systems94
5. If you see errors in the topology, look at the log messages, which can provide an indication of
what went wrong. See the topic, ”Viewing Log Messages” on page 59 for more information
about the messages that appear in this tab. Look at Event Manager for additional information.
Access Event Managerby clicking the Event Manager button in the left pane. To obtain
troubleshooting information, see the topic, ”Troubleshooting Topology Issues” on page 679.
If the topology for an element in your network changes, select the element and click Get
Topology (Tools > Storage Essentials > Home > Discovery > Topology) to updated the
information.
The software obtains just enough information about where the element is connected in the
topology, for example a switch connected to a host.
6. See the topics in ”Troubleshooting” on page 661 for more information on troubleshooting
problems with discovery and building the topology.
Modifying the Properties of a Discovered Address
All elements are initially placed in the Default discovery group. You can then move elements from
the Default discovery group to other discovery groups.You can use discovery groups to break up
Get Details/Discovery Data Collection. For example, you could specify that the management server
get Get Details/Discovery Data Collection for only the elements in Discovery Group 1, thus, saving
you time. This feature is sometimes referred to as segmented replication because you can specify
getting Get Details/Discovery Data Collection for a segment of the discovered elements.
• User name and password - You can change the user name and password the management
server uses to access a device. Whenever a user name and/or password has changed on a
device the management server monitors, the management server must be made aware of the
change. For example, assume the password for a host was changed. You would need to
updated the management server database with the new password. See ”Modifying a Single IP
Address Entry for Discovery” on page 29.
• Discovery group - All elements are initially placed in the Default discovery group. You can then
move elements from the Default discovery group to other discovery groups.You can use
discovery groups to break up getting the topology or Get Details. For example, you could
specify that the management server gets the topology or Get Details for only the elements in
Discovery Group 1, thus, saving you time. This feature is sometimes referred to as segmented
replication because you can specify getting the topology or Get Details for a segment of the
discovered elements.
Keep in mind the following:
• (Discovery from HP SE only) You can use this window to change the user name and password
stored in the management server's database. It does not change the device's user name and
password.
• Discovery groups cannot be renamed or created. You must use the existing discovery groups.
• You can also use the Move to Discovery Group button to move multiple elements to another
discovery group. See ”Moving Elements to Another Discovery Group” on page 106 for more
information.
Discovery from HP SIM
To change the discovery properties of an element: