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Thread: AIX 5.3 MPIO vs RDAC on DS4000 range
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Old 10-08-2008
kimyo kimyo is offline
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Join Date: Sep 2008
Location: North Vancouver BC Canada
Posts: 19
Hi Zaxxon

Thanx for the feedback.

I understand that MPIO will provide more than 1 path but I am trying to figure out if the other paths will all be only fail-over or if I can have 4 paths to each LUN(2 from each controller A and B) through 2 different host connections on the DS4800? That config is now supported with the new DS4000 firmware and AIX 5.3 TL08 (I think) and above. However I can not find confirmation if the 2 paths that connect to the same controller (lets say controller A) will both be active (LUN assigned to controller A in Storage Manager) with the other 2 paths(to controller B) acting as fail over paths? or if you can still only have 1 active path on a DS4000? Hope I'm making sense here ?
I also get some references to using SDDPCM on AIX? But I can not find an official IBM link stating that it's support on AIX. It is however supported on windows.

thanx