Building Disaster Recovery Serviceguard Solutions Using Metrocluster with 3PAR Remote Copy for Linux B.01.00.00, July 2013

where:
◦ -snp_cpg <snp_cpg> is the name of the copy group from which the snapshot space
is allocated.You can use MC_CPG_RAID5 CPG that was created in step2 or any
other CPG to allocate the space for the snapshot.
◦ -usr_aw <percent> is the allocation warning alert limit for the user space specified
in percentage. This generates an alert when the user space of the volume exceeds
a specified percentage of the volume’s size.
◦ -usr_al <percent> is the allocation limit of the user space specified in percentage.
This prevents the user space from exceeding a specified percentage of the volume’s
size.
4. Export the created volume to all the nodes in the primary site of the Metrocluster.
cli% createvlun <volume_name> <LUN> <host name>
NOTE: The volumes on the recovery storage system must be exported to the nodes in the
recovery site after the Remote Copy volume group is created. Secondary volumes cannot be
exported when they are being added to the Remote Copy volume group.
After you export the 3PAR virtual volume to the hosts, use WWN to map the 3PAR virtual
volume with Linux disk name. To find the WWN of the virtual volume, login to the 3PAR array
which has the virtual volume, and then run the following command:
cli% showvv -d <virtual_volume_name>
After the WWN of the 3PAR virtual volume is obtained, find the WWN of the disk using
lsscsi or scsi_id commands.
For Example:
# lsscsi | grep 3PAR | grep disk | awk '{print $6}'
After the 3PAR disks are retrieved by lsscsi command, run the scsi_id command to find
the WWN of the 3PAR disk.
For SUSE:
#/lib/udev/scsi_id --whitelisted <3PAR disk path>
For Red Hat:
#/sbin/scsi_id --whitelisted <3PAR disk path>
NOTE: The lsscsi command is available in lssci package available in the respective
OS repository.
Setting up the replication using 3PAR Remote Copy 11