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 HP A7173A PCI-X Dual Channel Ultra320 SCSI Host Bus Adapter Support Guide: HP-UX 11i v1, 11i v2, and 11i v3 > Chapter 3 Configuring the A7173A Adapter

Configuring LUN 0
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For a disk array that is in a multi-host environment, the SCSI standard requires a LUN 0 in the following configurations:

  • If the disk array is connected to the A7173A adapter, and you plan to boot from that array, the disk array must be configured as LUN 0. Do not configure the LUN with any LUN security (that is, do not restrict access).

  • If the disk array is connected to an A7173A adapter installed in an HP-UX system that is running from a separate boot disk, the disk array must be configured with LUN 0; otherwise, the ioscan command will not detect all of the LUNs present in the disk array.

Once you have determined that LUN 0 is configured correctly (if LUN 0 is required in your configuration), go to “Verifying the Installation”, and confirm that all of the components are working properly.



Setting SCSI Parameters to Default Values
  		 


Using the A7173A Adapter as a Boot Device  
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