Designing Disaster Tolerant High Availability Clusters, 10th Edition, March 2003 (B7660-90013)

Environment File Variables for MetroCluster/SRDF
Appendix B 415
perform a R1/R2 swap, set AUTOSWAPR2=1 and an
automatic R1/R2 swap will occur only when the SRDF
link and the two Symmetrix are properly functioning.
If AUTOSWAPR2 is set to 1, then CONSISTENCYGROUPS can
not be set to 1.
Ensure that you have the minumum requirements for
R1/R2 Swapping by referring to most recent version of
the MetroClusters release notes.
CLUSTER_TYPE This parameter defines the clustering environment in
which the script is used. Should be set to “metro” if this
is a MetroCluster environment and “continental” if this
is a ContinentalClusters environment. A type of
“continental” is supported only when the HP
ContinentalClusters product is installed.
CONSISTENCYGROUPS Default: 0
This parameter tells MetroCluster whether or not
consistency groups were used in configuring the R1 and
R2 volumes on the Symmetrix frames. A value of 0 is
the normal setting if you are not using consistency
groups. A value of 1 indicates that you are using
consistency groups. (Consistency groups are required
for M by N configurations.)
If CONSISTENCYGROUPS is set to 1, AUTOSWAPR2 cannot
be set to 1. Ensure that you have the minumum
requirements for Consistency Groups by referring to
MetroClusters release notes.
DEVICE_GROUP This variable contains the name of the Symmetrix
device group for the package on that node, which
contains the name of the consistency group in an M by
N configuration.
PATH Has been modified to include the path name of the
Symmetrix SymCLI commands. This should be set to
the default location of /usr/symcli/bin unless you
have changed the location.
PKGDIR In addition to indicating the location of the package
control scripts, this variable also will be used for the
following files: