HP XP P9500 Storage - Manual (Page 143)

The way to know whether the mapping is changed or not is possible to use “-fe” option of
pairdisplay
and/or raidscan command that shows the connection for the external volumes.
Also LU of the external connection and LU of RAID Group intermingle on the port for pooling, but
can confirm this with the above option of the raidscan command.
(3) Group operation
It is possible to execute the Auto LUN as a group by describing it to the horcm*.conf, however
LU(LDEV), which was mapped to S-VOL after command execution, does not maintain the consistency
of the group. In other words, you must consider the volume mapped to the S-VOL after execution
as the discarded volume.
When the HORCM demon is KILLed or the host has crash during group operation, the group
aborting the execution of the command has LUN mixed with the external connection and RAID
Group as the group. In this case, RAID Manager skips the executed LU and issues the CC (Auto
LUN) command to the un-executed LU, and an identical command is executed once again.
(4) Using MU#
RAID Manager manages the status of Cnt Ac-S/BC using MU#, so RAID Manager uses the empty
MU# that is managed for BC. Therefore, execute the command of the volume migration in the
environment for BC having HORCC_MRCF environment variable. An example is shown below.
(5) HORCM instance
It is possible to describe the original and target volume for the volume migration to MU# as another
group in horcm*.conf for HORCM instance of BC and /or Cnt Ac-S. Also, it is possible to define
the original and target volume for the volume migration in the horcm*.conf as HORCM instance
independent from BC/Cnt Ac-S.
Commands to control Auto LUN
(1) Command for Auto LUN
RAID Manager supports the volume migration by adding an option (-m cc) to the paircreate
command.
paircreate -g <group> -d <pair vol> … -m <mode> -vl[r] -c <size>
-m <mode> mode = cc (can only be specified for Business Copy)
This option is used to specify the Auto LUN mode.
NOTE: This option cannot be specified with “-split” option in the same command.
-vl[r]
The -vl option specifies “local”, and copies from the local instance LU(P-VOL) to the remote instance
LU(S-VOL), an original volume as the local instance LU is migrated from P-VOL to S-VOL, and the
physical volume mapping between P-VOL and S-VOL is swapped after copied
The -vr option specifies “remote”, and copies from the remotel instance LU(P-VOL) to the local
instance LU(S-VOL), an original volume as the remote instance LU is migrated from P-VOL to S-VOL,
and the physical volume mapping between P-VOL and S-VOL is swapped after copied.
-c <size>
This option is used to specify a track size of the case that copies paired volume at 1-15 extents.
When this option is omitted, it uses a default value of (3) is used for track size.
Controlling Auto LUN 143