Presenting DMX LUNs to a HP-UX Host

DMX Gurus:

Generally when devices are presented to a HP-UX host, the primary and alternate path on the server for a device have the same "T" numbers and "D" numbers. For any given LUN that is discovered only the "C" numbers varies.

However, while working with one such host I see that the "T" and "D" numbers also vary. What controls these CTD numbers on a HP-UX Host? Is it the FA Port or the VBUS/TID/LUN number allocation? Any input about why this happens would be most appreciated.

Symmetrix ID=00012345678

Logical device ID=0ABCD

state=alive; policy=SymmOpt; priority=0; queued-IOs=0

==============================================================================

---------------- Host ---------------   - Stor -   -- I/O Path -  -- Stats ---

###  HW Path                I/O Paths    Interf.   Mode    State  Q-IOs Errors

==============================================================================

  10 1/0/14/1/0/4/0.98.50.19.0.14.1 c10t14d1  FA  8dB   active  alive      0      0

  12 1/0/14/1/0/4/0.98.54.19.0.13.7 c12t13d7  FA  8cB   active  alive      0      0

   6 1/0/6/1/0/4/0.97.50.19.0.14.1 c6t14d1   FA  9dB   active  alive      0      0

   8 1/0/6/1/0/4/0.97.54.19.0.13.7 c8t13d7   FA  9cB   active  alive      0      0

Warm Regards,

KGD.