Sun Cluster Geographic Edition Data Replication Guide for EMC Symmetrix Remote Data Facility

Determining the Aggregate EMC Symmetrix Remote Data Facility Device Group State

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