Md3000 Maintenance Considerations - Dell PowerVault MD3000 Information Update

Host Access Configuration
To configure hosts for the MD3000 storage array, use the Configure Host Access (Automatic) GUI.
Host access that is manually configured requires special attention to ensure that the correct SAS host
port World Wide IDs are selected for each host. If any incorrect IDs are configured, an inaccurate
topology results and a Topology Conflict is flagged on the Summary page. You can use the SAS 5/E
HBA BIOS setup program to identify the World Wide IDs of the SAS host ports.
NOTE:
Verify that your host or management station network configuration—including station IP address, subnet
mask, and default gateway—is correct before adding a new storage using the Automatic option. For all Linux
kernels, set the default gateway when adding a storage array using the Automatic option so that broadcast
packets are sent to
The Configure Host Access (Automatic) interface has changed. To ensure that only specified hosts get
added, select the hosts from the Available Hosts window that you want configured and click Add to move
them to the Selected Hosts window. After the specified hosts have been added to the Selected Hosts
window, click OK to run the automatic host configuration.

MD3000 Maintenance Considerations

For Linux kernels, stop and then restart the SMagent after performing either of the two following
maintenance tasks:
• Moving a controller offline or replacing a controller.
• Removing SAS cables from or attaching SAS cables to Red Hat Enterprise Linux (version 4),
SUSE Linux Enterprise Server 9, or SUSE Linux Enterprise Server 10 host servers.
NOTE:
If a Resolve Topology Conflicts message appears in the Status portlet of the Summary page after restarting
the SMagent, it might be necessary to restart the host server to clear this message. The Resolve selection in the
Topology Conflict wizard should not be selected. The MD3000 will continue to service I/O requests; however, the
array could become partially managed if only in-band management is used. Stop all I/O operations on any host
servers that were involved in the maintenance operation and perform a restart.
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Information Update
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