Cambex AIX Betriebsanweisung PDF herunterladen (Seite 23)

• failed or offline status is considered first. A path will not

be used if failed or offline.

• Anti-thrashing prevents paths to the wrong controller

from causing thrashing.

• HBA preference - normally all HBAs have equal

preference to paths. To block an hba from using a path,

do:

Command line:

dpfutil hba_set_wwn cbx0 no (default is yes)

to list HBA preferences:

odmget -q"attribute=hba_pref" CuAt

in smit:

Devices

-> Cambex Dynamic Path Management

-> Change / Show Characteristics of Cambex Managed

HBAs

• Controller preference - this is for multi-controller RAID

arrays where one or more of the controllers reports that

it owns the LUN. Controllers which do not report

preference, are treated equally.

• Target preference - To make one path higher preference

than other paths to the same LUN, use target

preference

Command line:

dpfutil target_set_wwn cbx10 yes (default is no)

to list target preference:

odmget -q"attribute=tgt_pref" CuAt

in smit:

Devices

-> Cambex Dynamic Path Management

-> Change / Show Characteristics of Cambex

Dynamic Paths

-> Change / Show Physical Path Routing

Preferences

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Cambex AIX Betriebsanweisung Seite 23