11-22-2013
To answer it in simple way
An LPAR (Logical Partition) is a virtual server.
A LUN (Logical Unit Number) is a disk (it can be carved out of many physical disks). The term is use by Storage Admins, but when it is mapped to a particular LPAR, the System Admins, DBA and Application team call it a disk, we also call disk a LUN.
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LEARN ABOUT MOJAVE
mpioutil
mpioutil(1) BSD General Commands Manual mpioutil(1)
NAME
mpioutil -- Tool for configuring paths to multipathed logical units.
SYNOPSIS
mpioutil verb direct-object arguments
DESCRIPTION
mpioutil is a utility to manage multiple paths to a SCSI Logical Unit.
VERBS, DIRECT OBJECTS, AND SPECIFIC ARGUMENTS
list
Lists all multipathed logical units.
info -i <lun identifier>
Get information on a multipathed logical unit. The -i flag may also be expressed as --id.
modify lun -i <lun identifier> -a <load balancing algorithm> -b <round robin batch count>
Modify a logical unit. The -i, -a, -b flags may also be expressed as --id, --algorithm, and --batchCount respectively.
modify path -l <lun identifier> -i <path identifier> -e | -d
Modify a path on a logical unit. The -l, -i, -e, and -d flags may also be expressed as --lun, --id, --enable, and --disable respec-
tively.
EXAMPLES
mpioutil list
Lists all multipathed logical units.
mpioutil info --id 22F2000155A508ED
Get information for a multipathed lun with id 22F2000155A508ED.
mpioutil modify lun --id 22F2000155A508ED --algorithm RoundRobin --batchCount 16
Modify a multipathed lun's algorithm to be RoundRobin with a batch count of 16.
mpioutil modify lun --id 22F2000155A508ED --algorithm LeastIO
Modify a multipathed lun's algorithm to be LeastIO.
mpioutil modify path --lun 22F2000155A508ED --id 26010001553560BF00000001 --disable
Disable a path that belongs to a multipathed logical unit.
Darwin May 31, 2019 Darwin