I have the data service installed on all nodes in the cluster.

there is are files in the
/opt/SUNWsczone/sczbt/util/proxy2-sczbt_config
/opt/SUNWsczone/sczbt/util/sczbt_register
/opt/ParameterFile/sczbt_proxy2-zone-rs

these are used to create the proxy2-zone-rs resource and this resource doe not run on all the servers. when you do try to failover the resource group proxy2-rg it failsover all the resources apart from the last one proxy2-zone-rs

I created the resouce by editing the proxy2-sczbt_config file
then I registered the config file i.e
/opt/SUNWsczone/sczbt/util/sczbt_register -f /opt/SUNWsczone/sczbt/util/proxy2-sczbt_config

this created the /opt/ParameterFile/sczbt_proxy2-zone-rs

and then I copied the /opt/ParameterFile/sczbt_proxy2-zone-rs
to all other nodes in the cluster so the should be identical

I have attached the config/Parameter files :#

bash-3.00# cat proxy2-sczbt_config
#
# Copyright 2007 Sun Microsystems, Inc. All rights reserved.
# Use is subject to license terms.
#
# ident "@(#)sczbt_config 1.4 07/09/14 SMI"
#
# This file will be sourced in by sczbt_register and the parameters
# listed below will be used.
#
# These parameters can be customized in (key=value) form
#
# RS - Name of the resource
# RG - Name of the resource group containing RS
# PARAMETERDIR - Name of the parameter file direcrory
# SC_NETWORK - Identfies if SUNW.LogicalHostname will be used
# true = zone will use SUNW.LogicalHostname
# false = zone will use it's own configuration
#
# NOTE: If the ip-type keyword for the non-global zone is set
# to "exclusive", only "false" is allowed for SC_NETWORK
#
# The configuration of a zone's network addresses depends on
# whether you require IPMP protection or protection against
# the failure of all physical interfaces.
#
# If you require only IPMP protection, configure the zone's
# addresses by using the zonecfg utility and then place the
# zone's address in an IPMP group.
#
# To configure this option set
# SC_NETWORK=false
# SC_LH=
#
# If IPMP protection is not required, just configure the
# zone's addresses by using the zonecfg utility.
#
# To configure this option set
# SC_NETWORK=false
# SC_LH=
#
# If you require protection against the failure of all physical
# interfaces, choose one option from the following list.
#
# - If you want the SUNW.LogicalHostName resource type to manage
# the zone's addresses, configure a SUNW.LogicalHostName
# resource with at least one of the zone's addresses.
#
# To configure this option set
# SC_NETWORK=true
# SC_LH=<Name of the SC Logical Hostname resource>
#
# - Otherwise, configure the zone's addresses by using the
# zonecfg utility and configure a redundant IP address
# for use by a SUNW.LogicalHostName resource.
#
# To configure this option set
# SC_NETWORK=false
# SC_LH=<Name of the SC Logical Hostname resource>
#
# Whichever option is chosen, multiple zone addresses can be
# used either in the zone's configuration or using several
# SUNW.LogicalHostname resources.
#
# e.g. SC_NETWORK=true
# SC_LH=zone1-lh1,zone1-lh2
#
# SC_LH - Name of the SC Logical Hostname resource
# FAILOVER - Identifies if the zone's zone path is on a
# highly available local file system
#
# e.g. FAILOVER=true - highly available local file system
# FAILOVER=false - local file system
#
# HAS_RS - Name of the HAStoragePlus SC resource
#

RS=proxy2-zone-rs
RG=proxy2-rg
PARAMETERDIR=/opt/ParameterFile
SC_NETWORK=false
SC_LH=
FAILOVER=true
HAS_RS=proxy2-HAS-rs

#
# The following variable will be placed in the parameter file
#
# Parameters for sczbt (Zone Boot)
#
# Zonename Name of the zone
# Zonebrand Brand of the zone. Current supported options are
# "native" (default), "lx" or "solaris8"
# Zonebootopt Zone boot options ("-s" requires that Milestone=single-user)
# Milestone SMF Milestone which needs to be online before the zone is
# considered booted. This option is only used for the
# "native" Zonebrand.
# LXrunlevel Runlevel which needs to get reached before the zone is
# considered booted. This option is only used for the "lx"
# Zonebrand.
# SLrunlevel Solaris legacy runlevel which needs to get reached before the
# zone is considered booted. This option is only used for the
# "solaris8" Zonebrand.
# Mounts Mounts is a list of directories and their mount options,
# which are loopback mounted from the global zone into the
# newly booted zone. The mountpoint in the local zone can
# be different to the mountpoint from the global zone.
#
# The Mounts parameter format is as follows,
#
# Mounts="/<global zone directory>:/<local zone directory>:<mount options>"
#
# The following are valid examples for the "Mounts" variable
#
# Mounts="/globalzone-dir1:/localzone-dir1:rw"
# Mounts="/globalzone-dir1:/localzone-dir1:rw /globalzone-dir2:rw"
#
# The only required entry is the /<global zone directory>, the
# /<local zone directory> and <mount options> can be omitted.
#
# Omitting /<local zone directory> will make the local zone
# mountpoint the same as the global zone directory.
#
# Omitting <mount options> will not provide any mount options
# except the default options from the mount command.
#
# Note: You must manually create any local zone mountpoint
# directories that will be used within the Mounts variable,
# before registering this resource within Sun Cluster.
#

Zonename="proxy2.mail.internal"
Zonebrand="native"
Zonebootopt=""
Milestone="multi-user-server"
LXrunlevel="3"
SLrunlevel="3"
Mounts=""
########################
Paramerter file :

bash-3.00# cat sczbt_proxy2-zone-rs
#!/usr/bin/ksh
#
# Copyright 2007 Sun Microsystems, Inc. All rights reserved.
# Use is subject to license terms.
#
#
# Parameters for sczbt (Zone Boot)
#
# Zonename Name of the zone
# Zonebrand Brand of the zone. Current supported options are
# "native" (default), "lx" or "solaris8"
# Zonebootopt Zone boot options ("-s" requires that Milestone=single-user)
# Milestone SMF Milestone which needs to be online before the zone is
# considered as booted. This option is only used for the
# "native" Zonebrand.
# LXrunlevel Runlevel which needs to get reached before the zone is
# considered booted. This option is only used for the "lx"
# Zonebrand.
# SLrunlevel Solaris legacy runlevel which needs to get reached before the
# zone is considered booted. This option is only used for the
# "solaris8" Zonebrand.
# Mounts Mounts is a list of directories and their mount options,
# which are loopback mounted from the global zone into the
# newly booted zone. The mountpoint in the local zone can
# be different to the mountpoint from the global zone.
#
# The Mounts parameter format is as follows,
#
# Mounts="/<global zone directory>:/<local zone directory>:<mount options>"
#
# The following are valid examples for the "Mounts" variable
#
# Mounts="/globalzone-dir1:/localzone-dir1:rw"
# Mounts="/globalzone-dir1:/localzone-dir1:rw /globalzone-dir2:rw"
# The only required entry is the /<global zone directory>, the
# /<local zone directory> and <mount options> can be omitted.
#
# Omitting /<local zone directory> will make the local zone
# mountpoint the same as the global zone directory.
#
# Omitting <mount options> will not provide any mount options
# except the default options from the mount command.
#
# Note: You must manually create any local zone mountpoint
# directories that will be used within the Mounts variable,
# before registering this resource within Sun Cluster.
#

Zonename="proxy2.mail.internal"
Zonebrand="native"
Zonebootopt=""
Milestone="multi-user-server"
LXrunlevel="3"
SLrunlevel="3"
Mounts=""