iopath.params(4M)              DG/UX R4.11MU05             iopath.params(4M)


NAME
       iopath.params - multi-path I/O database

SYNOPSIS
       /etc/iopath.params

DESCRIPTION
       The  iopath.params database is used to associate I/O devices that are
       to be used in multi-path I/O relationships. This file is used by  the
       operating  system  at  run level changes to determine what multi-path
       I/O relationships to establish. Multi-path I/O is  designed  to  make
       use  of  multiple  paths  to  the  same I/O device. In the event of a
       failure of one of the paths, I/O will be switched to a backup path.

       A disk primary path can have up to two backup  I/O  paths  associated
       with  it.   A  lan  primary  path  can  have only one backup I/O path
       associated with it.

       This database is set up and maintained by the admiopath(1M)  command.
       The format of the entries in the iopath.params database is:

            primary-path   The  name of the primary I/O path. This should be
                           the name associated with the  primary  I/O  path.
                           This  value  is  used  as  the search key for the
                           database.

            start-on-reboot
                           This is a "YES" or "NO" value  that  is  used  to
                           determine  whether or not a particular multi-path
                           I/O  relationship  should  be  started  when  the
                           system is rebooted.

            backup-path    The  name  of  a backup I/O path. This I/O device
                           must be of the same type as the primary I/O path,
                           and both paths must be on the same system.

            backup-path    The  name  of  a backup I/O path. This I/O device
                           must be of the same type as the primary I/O path,
                           and  both  paths must be on the same system. This
                           field will only be used if a second  backup  file
                           exists for a disk I/O path.

FILES
       /etc/iopath.params

SEE ALSO
       admiopath(1M), failovermon(1M)



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