Recovering from an Unidentified Storage System

Make sure that the network connection to the storage management station is operating.

Make sure that the RAID controller modules are installed and that the power is turned on to the storage system. If a problem exists, correct it.

Depending on the management method that you configured on your storage system, perform one of these actions:

In-band storage system	Go to step 4. If you have an in-band storage system, follow this procedure. Click Refresh after each step to make sure of the results.
Out-of-band storage system	Go to step 5. If you have an out-of-band storage system, follow this procedure. Click Refresh after each step to make sure of the results.

If you have an in-band storage system, follow this procedure. Click Refresh after each step to make sure of the results.

a	Make sure that the host-agent software is installed and running.
	If you started the host before the host was connected to the RAID controller modules in the storage system, the host-agent software will not be able to find the RAID controller modules. If so, make sure that the hardware connections are secure, and restart the host-agent software.
b	Make sure that the network can access the host by using the ping command. Use the form ping <host-name-or-IP-address>.
c	Can the network access the host?

	Yes – Go to step d. Remove the host with the Unresponsive status from the storage management software, and add that host again.
	No – Go to step f. Make sure that the power to the host is turned on and that the host is operational.

Remove the host with the Unresponsive status from the storage management software, and add that host again.

Does the host return an Optimal status?

	Yes – You have completed this procedure.
	No –Go to step f. Make sure that the power to the host is turned on and that the host is operational.

Make sure that the power to the host is turned on and that the host is operational.

Make sure that the host bus adapters have been installed in the host.

Examine all external cables and switches or hubs to make sure that you cannot see any damage and that they are securely connected.

If you have recently replaced or added the RAID controller module, restart the host-agent software so that the new RAID controller module is found.

Does a problem still exist?

	Yes – Make the appropriate modifications to the host. Got to step 6. Make sure that the RAID controller module firmware is compatible with the storage management software on your management station.
	No – Go to step 6. Make sure that the RAID controller module firmware is compatible with the storage management software on your management station.

If you have an out-of-band storage system, follow this procedure. Click Refresh after each step to make sure of the results.

a	Make sure that the network can access the RAID controller modules by using the ping command. Use the form ping <RAID controller module-IP-address>.
b	Can the network access the RAID controller modules?

	Yes – Go to step c. Remove the storage system with the Unresponsive status from the storage management software, and add that storage system again.
	No – Go to step e. Examine the Ethernet cables to make sure that you cannot see any damage and that they are securely connected.

Remove the storage system with the Unresponsive status from the storage management software, and add that storage system again.

If the storage system returns to Optimal status, you have completed this procedure.

Does the storage system return to Optimal status?

	Yes – You have completed this procedure.
	No – Go to step e.

Examine the Ethernet cables to make sure that you cannot see any damage and that they are securely connected.

Make sure that the applicable network configuration tasks have been performed (for example, IP addresses have been assigned to each RAID controller module).

Make sure that the RAID controller module firmware is compatible with the storage management software on your management station.

If the RAID controller module firmware was upgraded, the storage management software might not have access to the storage system. A new version of storage management software might be needed to manage the storage system with the new version of the RAID controller module firmware. If this problem exists, contact your Customer and Technical Support representative.

Look to see if there is too much network traffic to one or more RAID controller modules.

This problem corrects itself because the storage management software tries to re-establish communication with the RAID controller modules in the storage system at regular times. If the storage system was unidentified and a subsequent try to connect to the storage system succeeds, the storage system becomes responsive.

For an out-of-band storage system, look to see if management operations are taking place on the storage system from other storage management stations.

The type of management operations being performed and the number of management sessions taking place together establish the number of Transmission Control Protocol/Internet Protocol (TCP/IP) connections made to a RAID controller module. When the maximum number of TCP/IP connections have been made, the RAID controller module stops responding. This problem corrects itself because, after some TCP/IP connections complete, the RAID controller module then becomes responsive to other connection tries.

If the storage system is still unidentified, problems might exist with the RAID controller modules. Contact your Customer and Technical Support representative.