The state of each EMC Symmetrix Remote Data Facility device group is mapped to the Sun Cluster Geographic Edition resource group state. The symrdf -g dgname query command returns this state.
The remainder of this section describes the individual device group states and how these states are validated against the local role of the protection group.
An individual EMC Symmetrix Remote Data Facility device group can be in one of the following states:
Synchronized
SynInProg
Failedover
R1 Updated
R1 UpdInProg
Split
Suspended
Partitioned
Invalid
If a protection group contains only one EMC Symmetrix Remote Data Facility device group, then the aggregate device group state is the same as the individual device group state.
When a protection group contains multiple EMC Symmetrix Remote Data Facility device groups, the aggregate device group state is obtained as described in the following table.
Table 2–1 Conditions That Determine the Aggregate Device Group State
Condition |
Aggregate Device Group State |
---|---|
Any of the individual device group states are Invalid. |
Invalid |
Any of the individual device groups states are Partitioned and none of the individual device group states is Invalid. |
Partitioned |
One or more of the individual device groups states are Suspended and none of the individual device group states is Invalid, or Partitioned. |
Suspended |
One or more of the individual device groups states are Split and none of the individual device group states is Invalid, Partitioned, or Suspended. |
Split |
One or more of the individual device groups states are R1 UpdInProg and none of the individual device group states is Invalid, Partitioned, Suspended, or Split. |
R1 UpdInProg |
One or more of the individual device groups states are R1 Updated and none of the individual device group states is Invalid, Partitioned, Suspended, Split, or R1 UpdInProg. |
R1 Updated |
One or more of the individual device groups states are Failedover and none of the individual device group states is Invalid, Partitioned, Suspended, Split, R1 UpdInProg, or R1 Updated. |
Failedover |
One or more of the individual device groups states are SynInProg and none of the individual device group states is Invalid, Partitioned, Suspended, Split, R1 UpdInProg, R1 Updated, or Failedover. |
SynInProg |
All of the individual device group states are Synchronized. |
Synchronized |
The resource status message reflects the role and state of the RDF pair. For example, the resource status and status message of Faulted Split, is reported when the RDF pair is in a Split state.
The RDF pair state is mapped to the associated resource status as described in the following table.
Table 2–2 Mapping From the RDF Pair State to the Resource Status
Condition |
Resource Status |
Status Message |
---|---|---|
The RDF pair state is Invalid and the pair state is not Incorrect Role. |
Faulted |
Invalid state |
The RDF pair state is Partitioned and the pair state is not Incorrect Role, or Invalid. |
Faulted |
Partitioned |
The RDF pair state is Suspended and the pair state is not Incorrect Role, Invalid, or Partitioned. |
Faulted |
Suspended |
The RDF pair state is SyncInProg and the pair state is not Incorrect Role, Invalid, Partitioned, or Suspended. |
Degraded |
SyncInProg |
The RDF pair state is R1 UpdInProg and the pair state is not Incorrect Role, Invalid, Partitioned, Suspended, or SyncInProg. |
Faulted |
R1 UpdInProg |
The RDF pair state is Split and the pair state is not Incorrect Role, Invalid, Partitioned, Suspended,SyncInProg, or R1 UpdInProg. |
Faulted |
Split |
The RDF pair state is Failed over and the pair state is not Incorrect Role, Invalid, Partitioned, Suspended,SyncInProg, R1 UpdInProg, or Split. |
Faulted |
Failed over |
The RDF pair state is R1 Updated and the pair state is not Incorrect Role, Invalid, Partitioned, Suspended,SyncInProg, R1 UpdInProg, Split, or Failed over. |
Faulted |
Replicating with role change |
The RDF pair state is Synchronized. |
Online |
Replicating |
The state of the RDF pair determines the availability of consistent data in the partnership. When the state of the RDF resource on the primary or secondary cluster is Degraded or Faulted, the data volumes might not be synchronized even if the application can still write data from the primary volume to the secondary volume. The RDF pair will be in a Partitioned state and the invalid entries will be logged as the data is written to the primary volume. Manual recovery operations are required to resolve the error and resynchronize the data.