FAQ / 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

 

Posted in: NexentaStor