Geographic Edition Properties for SRDF
This appendix provides the properties of Geographic Edition data replication components for
SRDF.
This appendix contains the following sections:
SRDF Protection Group and Data Replication Component Properties
The following table describes the SRDF properties that the Geographic Edition software
defines.
Table A-1 SRDF Properties
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Protection Group Property: Cluster_dgs (string array)
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Lists
the Oracle Solaris Cluster device groups where the data is written. The list is comma delimited.
Solaris Volume Manager disk sets are specified as
local-cluster[disk-set]:remote-cluster[disk-set].
Only applications that belong to the protection group should write to these device groups. The
Oracle Solaris Cluster device groups must exist and have the same name on both the primary cluster
and the secondary cluster.
Tuning recommendations: This property can only be tuned
when the protection group is offline.
Category: Optional
Default: Empty
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Data Replication Component Property: DG_or_CG (string)
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Specifies the type of SRDF component: device group (DG) or SRDF
consistency group (CG).
Tuning recommendations: This property must be set to
DG.
Category: Required
Default: DG
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Protection Group Property: Nodelist (string array)
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Lists the host names of the machines that can be primary for the replication mechanism. This
list is comma delimited.
Tuning recommendations: This property can be tuned at any
time.
Category: Optional
Default: All nodes in the cluster
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Data Replication Component Property: R1_SID (string)
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Specifies the primary (RDF1) EMC Symmetrix ID of the EMC Symmetrix devices.
Tuning recommendations: You can tune this property at any
time.
Category: Required
Default: None, until you add a Symmetrix Remote Data
Facility data replication component.
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Data Replication Component Property: R2_SID (string)
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Specifies the secondary (RDF2) EMC Symmetrix ID of the EMC Symmetrix devices.
Tuning recommendations: You can tune this property at any
time.
Category: Required
Default: None, until you add a Symmetrix Remote Data
Facility data replication component.
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SRDF Cluster Resource Properties That Must Not Be Changed
The Geographic Edition software automatically creates a cluster resource using the
SUNW.GeoCtlSRDF resource type and using the naming convention
sc_geo_dr-SRDF-protection-group-device-group.
The Geographic Edition framework internally changes some properties for this
SUNW.GeoCtlSRDF cluster resource. Altering the configuration or state of these
entities directly with Oracle Solaris Cluster commands might result in unrecoverable failure.
Therefore, you must not edit the following properties when they are configured in a
SUNW.GeoCtlSRDF cluster resource of the name
sc_geo_dr-SRDF-protection-group-device-group:
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DG_or_CG – Defines the type of SRDF component: device group
(DG) or consistency group (CG).
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R1_SID – Defines the local data replication role.
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R2_SID – Defines the local data replication role.
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SRDF_group – Defines the SRDF device group that contains the
volumes that are being replicated.
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Replication_role – Defines the SRDF role attribute.