If the source unit or the entire local Data Center fails, the data copy can be accessed directly via the target path in the remote Data Center. What happens next depends on whether or not the internal setting is overridden.
The internal setting of the PENDING-UPDATES parameter is always made on the storage system with the target unit. This can be done only by customer support.
/SET-REMOTE-COPY-ACCESS ...,TARGET-ACCESS=*DIRECT(ALLOW-PEND-UPDATES=*NO)
The PENDING-UPDATES parameter setting is not overridden. The target unit rejects the transition to READY and assumes the DISABLED status if there are still pending writes on the target unit.
/SET-REMOTE-COPY-ACCESS ...,TARGET-ACCESS=*DIRECT(ALLOW-PEND-UPDATES=*YES)
The PENDING-UPDATES parameter setting is overridden. The target unit assumes the READY status even if there are still pending writes.
CAUTION!
Overriding the PENDING-UPDATES parameter setting can result in data inconsistency.