5.Start the logical volume in the disk group.

#vxvol -g logdata startall

6.Create a directory to mount the volume.

#mkdir /logs

7.Mount the volume.

#mount /dev/vx/dsk/logdata/logfile /logs

8.Check to make sure the file system is present, then unmount the file system and deport the disk group.

#umount /logs

#vxdg deport logdata

Repeat steps 4 through 8 on all nodes that will access the disk group.

9.Establish the SRDF link.

# symrdf -g devgrpA establish

IMPORTANT: VxVM 4.1 does not support the agile DSF naming convention with HP-UX 11i v3.

NOTE: In a Metrocluster/SRDF environment, VxVM commands should not be run against write-disabled disks. This is due to VxVM potentially putting these disks into an offline state. Subsequent activation of a VxVM disk group might fail when the disks are again write-enabled, and requires a vxdisk scandisks to be executed prior to disk group activation.

Additional Examples of M by N Configurations

Figure 48 shows a 2 by 1 configuration with BCV’s, which indicates R1 volumes at Data Center A and R2 volumes and BCVs at Data Center B for pkg A and pkg B.

Figure 48 2 by 1 Configuration

Figure 49 shows a bidirectional 2 by 2 configuration with additional packages on node3 and node4, and R1 and R2 volumes at both data centers. In this configuration, R1 volumes and pkg A and pkg B are at Data Center A, and R2 volumes are at Data Center B. R1 volumes for pkg C and pkg D are at Data Center B, and R2 volumes are at Data Center A.

Building a Metrocluster Solution with EMC SRDF 271