Building Disaster Recovery Serviceguard Solutions Using Metrocluster with EMC SRDF
NOTE: Do not set the SYMCLI_SID and SYMCLI_DG environment variables before running the
symcfg command. These environment variables limit the amount of information gathered when
the EMC Solutions Enabler database is created, and therefore will not be a complete database.
Also, you must not set the SYMCLI_OFFLINE variable since this environment variable disables the
command line interface.
Determining Symmetrix device names on each node
To correctly specify the device file names when creating Symmetrix device groups, be sure to map
the HP-UX device files to the R1 and R2 Symmetrix devices.
To gather the necessary information:
1. Obtain a list of data for the Symmetrix devices available, by running the following command
without any options on each node:
# syminq
Sample output from both the R1 and R2 sides are as follows:
From R1 side:
Device Product Device
---------------------------- --------------------------- ---------------------
Name Type Vendor ID Rev Ser Num Cap (KB)
---------------------------- --------------------------- ---------------------
/dev/rdisk/disk106 R1 EMC SYMMETRIX 5875 27080A4000 1966080
/dev/rdisk/disk107 R1 EMC SYMMETRIX 5875 27080A5000 1966080
/dev/rdisk/disk108 R1 EMC SYMMETRIX 5875 27080A6000 1966080
/dev/rdisk/disk109 R1 EMC SYMMETRIX 5875 27080A7000 1966080
/dev/rdisk/disk110 R1 EMC SYMMETRIX 5875 27080A8000 1966080
/dev/rdisk/disk111 R1 EMC SYMMETRIX 5875 27080A9000 1966080
/dev/rdisk/disk112 R1 EMC SYMMETRIX 5875 27080AA000 1966080
/dev/rdisk/disk113 R1 EMC SYMMETRIX 5875 27080AB000 1966080
/dev/rdisk/disk114 R1 EMC SYMMETRIX 5875 27080AC000 1966080
/dev/rdisk/disk115 R1 EMC SYMMETRIX 5875 27080AD000 1966080
From R2 side:
Device Product Device
---------------------------- --------------------------- ---------------------
Name Type Vendor ID Rev Ser Num Cap (KB)
---------------------------- --------------------------- ---------------------
/dev/rdisk/disk68 R2 EMC SYMMETRIX 5875 2800340000 1966080
/dev/rdisk/disk69 R2 EMC SYMMETRIX 5875 2800341000 1966080
/dev/rdisk/disk70 R2 EMC SYMMETRIX 5875 2800342000 1966080
/dev/rdisk/disk71 R2 EMC SYMMETRIX 5875 2800343000 1966080
/dev/rdisk/disk72 R2 EMC SYMMETRIX 5875 2800344000 1966080
/dev/rdisk/disk73 R2 EMC SYMMETRIX 5875 2800345000 1966080
/dev/rdisk/disk74 R2 EMC SYMMETRIX 5875 2800346000 1966080
/dev/rdisk/disk75 R2 EMC SYMMETRIX 5875 2800347000 1966080
/dev/rdisk/disk76 R2 EMC SYMMETRIX 5875 2800348000 1966080
/dev/rdisk/disk77 R2 EMC SYMMETRIX 5875 2800349000 1966080
2. The following information is needed from these listings for each Symmetrix logical device:
• HP-UX device file name (for example, /dev/rdisk/disk70).
• Device type (R1, R2, BCV, GK, or blank).
• Symmetrix serial number (for example, 2800340000), useful in matching the HP-UX
device names to the actual devices in the Symmetrix configuration downloaded by EMC
support staff.
3. Use the symrdf command on each Symmetrix disk array (that is, from both the R1 and the
R2 side) to pair the logical device names for the R1 and R2 sides of each SRDF link:
# symrdf list
Preparing the Cluster for data replication 13