View Single Post

   
  #1 (permalink)  
Old 01-17-2008, 06:02 AM
Ulrich Windl
 
Posts: n/a
Default Q: HP-UX LUN-based disks (FC)

Hi,

I have basically two questions (for HP-UX 11.11 and newer):

HP technican said HP-UX can deal with non-contiguous LUNs for disks, but it
seems it cannot; is there a patch maybe? The sympom is: A FC-based disk array
(HP EVA 4000) presents these LUNs to a host: 0,1,2,3,4, 9. When doind an
ioscan on the FC-HBA, device files are created for LUNs 0-4, but not for 9.
That's my question: Is HP-UX able to detect non-contiguous LUNs automatically?

The second question is: If HP-UX cannot detect those automatically, can it
access the hardware if I create a correct device file manually?

Finally, it seems HP-UX can only ioscan a complete FC-HBA, but it cannot
ioscan for a specific LUN. Maybe that means that the answer to both questions
above is "no".

Any insights on that? (The background for this is: We want to present the same
virtual disks as the same LUNs in all nodes of a cluster where the nodes are
not perfectly symmetric).

Regards,
Ulrich
Reply With Quote