Installation Manual

Discovering Switches, Storage Systems, NAS Devices, and Tape Libraries106
About Discovery
When HP Storage Essentials is integrated with HP SIM, Discovery and Discovery Data Collection
are performed using HP SIM’s discovery user interface pages. This allows you to use credentials
and perform discovery and data collection tasks in HP SIM and enables hardware and software
health status polling, monitoring, and event management for storage, servers, switches,
infrastructure, and other elements on your network, such as enclosures, racks, clients and printers.
IMPORTANT: When HP Storage Essentials is integrated with HP SIM, if you initiate discovery from
the HP Storage Essentials Discovery Setup page, you will significantly limit the functionality of the
integrated solution. The HP Storage Essentials discovery pages are designed primarily for HP
Storage Essentials when it is used as a standalone product. In an integrated environment, the HP
Storage Essentials Discovery Setup pages can be used for troubleshooting discovery issues specific
to HP Storage Essentials or to enable product health monitoring. For more information, see
”Troubleshooting” on page 379.
Before you begin the Discovery process, note the following:
• If you have a problem discovering an element, try enabling Troubleshooting Mode. For more
information, see ”Troubleshooting Mode” on page 396.
• If HP Storage Essentials detects a device manager URL for an element, the URL is added to the
HP SIM Tools & Links page in the System Web Application Pages section.
• For elements that support multiple discovery protocols (for example, SNMP and SMI-S), only
one protocol at a time is supported for a given element. If you want to change the protocol used
to discover an element that has already been discovered, delete the element before attempting
to rediscover it with a different protocol. For more information, see ”Deleting Discovered
Elements” on page 164.
Scheduling Discovery Tasks
When scheduling discovery tasks, observe the following:
• When HP Storage Essentials is integrated with HP SIM, we recommend that you do not
schedule your HP SIM automatic discovery tasks to repeat over time because when the HP SIM
discovery is finished, the automatic discovery tasks initiate the HP Storage Essentials discovery
process. Allowing automatic discovery tasks to repeat will cause HP Storage Essentials to
unnecessarily repeat its identification discovery step against devices that are already
discovered.
• Discovery Data Collection does not default to an automatic schedule. In most cases, we
recommend running Discovery Data Collection once a day during off-peak hours. For more
information, see ”Discovery Data Collection” on page 153.
• For a device to be discovered, you must be able to ping it successfully from HP SIM.
Discovery of SMI-S Devices
When HP Storage Essentials is integrated with HP SIM, HP SIM’s native discovery of SMI-S devices
is disabled, and SMI-S discovery is handled by HP Storage Essentials.