HP 3PAR Peer Motion Guide

NOTE: After using this command and before start of migration, you should perform unzoning
activities and/or rescan of HBA and/or reboot of source host and/or any other management jobs
as required.
1. An entry of destination storage system is created on source storage system. It is treated as a
Linux host.
2. Source volumes are made available to this host representing HP 3PAR destination.
3. Source host information is captured from source storage system and accordingly created at
destination storage system.
4. Admit phase in case of HP 3PAR will create a corresponding entry of virtual volume to host
mapping at HP 3PAR. The virtual volume is exported to source host if online migration. Else,
export is deferred in case of minimally disruptive migration (MDM). Persona setting for volume
at destination will be set accordingly. The virtual volume will be in peer mode. There is some
proxy volume that is created to handle the I/Os in this stage.
5. If a source volume has implicit relationship with other source volumes, that gets auto-selected
and source volume’s CPG and provisioning applicable is applied to these implicit selections
as well.
6. The RAID level at the destination, once migrated, will be dependent on the CPG chosen and
can be different.
PARAMETERS
Mandatory/optionalDescriptionName
MandatoryThe uid from which source
volumes will be migrated.
sourceuid
A combination of this is
mandatory as specified by
user.
Map which informs about the
source volumes for migration.
A list of volume name that
srcvolmap
or volmapfile
e.g. if srchost is there,
destcpg and destprov
should be there.
identifies the volume or volume
set name that should be
provided.
Note: The volume set name
should precede with “set:”
If srcvolmap is there, srchost
should not be there.
It can also have mapping of
every source volume to required
If srcvolmap have CPG and
Prov info, then destcpg and
destprov need not be there.
provisioning or destination
common provisioning group
(CPG). This is required if
destCPG and destProv is not
provided.
-srcvolmap[{“source volume
path/unique name”, desired
destination provisioning after
migration(Thin/Full), desired
destination CPG name},{…},…]
Sample content of volmapfile:
TestVolume,Thin,Test_CPG
Provisioning and CPG entry
here will override default in
destcpg and destprov.
Possibilities:
"vv2",thin
"vv3,cpg3
"vv"
"vv4", full,cpg4
98 HP 3PAR Peer Motion Utility Commands