ID #1033

How do I configure COMSTAR Fibre Channel targets for fail over?

As a prerequisite for configuring Fibre Channel targets, the HBA port modes of both appliances need to be changed from Initiator mode to Target mode. To change HBA port mode, select SCSI Target Plus from the Data Management tab in NMV, followed by Ports from the Fibre Channel pane, finally select Target from the drop-down mode menu box.

ports

Once the HBA port modes of both appliances have been changed from Initiator mode to Target mode, reboot both appliances for the Target mode changes to come into effect.

To configure Fibre Channel targets on the appliance where the volume service is currently running, select SCSI Target Plus from the Data Management tab in NMV, followed by Create from the Zvols pane to create a virtual block device (in this example zvol01) of the required size (200MB) using the shared volume (vol01). The newly created zvol is automatically migrated to the other appliance on failover; therefore it does not need to be duplicated manually.

Create a new zvol

Once the Fibre Channel target has been created, select Mappings from the SCSI Target Plus pane to create a LUN mapping to the zvol to be used as backing storage for the Fibre Channel target. Again, the newly created LUN mapping is automatically migrated to the other appliance on failover; therefore it does not need to be duplicated manually.

Lun mapping


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Last update: 2010-07-12 16:59
Author: Paul Griffiths
Revision: 1.3

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