Building Disaster Recovery Serviceguard Solutions Using Metrocluster with Continuous Access XP P9000 for Linux B.12.00.00

1. Install the Raid Manager software for either XP or P9000 on every host system depending on
the disk array used in your environment.
2. Edit the /etc/services file, to add an entry for the Raid Manager instance to use with the
cluster. Use the following format to add an entry to the /etc/services file.
horcm<instance-number> <port-number>/udp
For Example,
horcm0 11000/udp #Raid Manager instance 0
3. Use the lsscsi command to determine what devices on the P9000 disk array have been
configured as command devices. The lsscsi output will have the suffix-CM for the command
devices. For Example, OPEN-V-CM.
NOTE: The lsscsi command is available in lssci package available in the respective
OS repository.
4. Copy the default Raid Manager configuration file to an instance-specific name.
# cp /etc/horcm.conf /etc/horcm0.conf
5. Create a minimum Raid Manager configuration file by editing the following fields in the /etc/
horcm0 file created in step4.
Table 2 Raid Manager configuration file fields
DescriptionFieldname
Enter the host-name of the system on which you are editing, the TCP/IP port number or
name specified for this Raid Manager instance in the /etc/services file, interval for
HORCM_MON
monitoring volume pairs and the maximum time-out period for communication with the
remote host.
For example:
HORCM_MON
#ip_address service poll(10ms) timeout(10ms)
HSTA horcm0 1000 3000
Enter the primary and alternate link device file names for both the primary and redundant
command devices (for a total of four raw device file names). If you are using virtual
HORCM_CMD
command device, you must provide the IP address of the service processor (SVP) and the
UDP communication port number. For more information about how to configure IP address
of the service processor (SVP) and the UDP communication port number using virtual
command device, see “Virtual command device configuration” (page 20).
CAUTION: Ensure that the redundant command device is NOT on the same physical device
as the primary command device. Also, ensure that it is on a different bus inside the XP or
P9000 series disk array.
16 Configuring an application in a Metrocluster environment