If an error occurs during update copy, what HiRDB does differs depending on the Real Time SAN Replication processing method and the protection mode. The following table shows HiRDB's actions when an error occurs during update copy.

Table 6-1 HiRDB's actions when an error occurs during update copy

Error type	Processing method	Protection mode	HiRDB's action at the main site	Switching sites in the event of a disaster
Failure to link to RAID Manager	All synchronous method or all asynchronous method	data, never	Continues online operations.	Correct operation cannot be guaranteed.
	Hybrid method	data	Continues online operations. However, a synchronization point dump is not collected (the KFPS02178-E message is output). Normal start, normal termination, and planned termination will also fail.
		never	Continues online operations. However, the KFPS02178-E message is output each time a synchronization point dump is collected.
Paired logical volume group name is missing from the RAID Manager configuration definition	All synchronous method or all asynchronous method	data, never	Continues online operations.	Correct operation cannot be guaranteed.
	Hybrid method	data	Continues online operations. However, if the paired logical volume group name in which RDAREAs are created is missing, the server that uses the applicable paired logical volume group cannot collect synchronization point dumps (the KFPS02178-E message is output). Normal start, normal termination, and planned termination will also fail.
		never	Continues online operations. However, the KFPS02178-E message is output each time a synchronization point dump is collected.
Route error	All synchronous method	data	Because data cannot be updated, HiRDB (or a unit in HiRDB/Parallel Server) terminates abnormally.	Recovers to the latest point in time.
		never	Continues online operations.	Correct operation cannot be guaranteed.
	All asynchronous method	--		Recovers to the point in time when the route error occurred.
	Hybrid method	data	Because the system file data cannot be updated, HiRDB (or a unit in HiRDB/Parallel Server) terminates abnormally.	Recovers to the latest point in time.#
		never	Continues online operations. However, the KFPS02178-E message is output each time a synchronization point dump is collected.	Correct operation cannot be guaranteed.
Primary volume error	All synchronous method	data, never	Shuts down the files created on the primary volume on which the error occurred.	Recovers to the latest point in time, except for the shut-down file.
	All asynchronous method	--		Recovers to the point in time when the error on the primary volume occurred.
	Hybrid method	data	If an error occurred on the primary volume belonging to the paired logical volume group in which the system files or RDAREAs are created, HiRDB shuts down the files created on the primary volume in which the error occurred. If an error occurred on the primary volume belonging to the paired logical volume group in which RDAREAs are created, the server that uses the applicable paired logical volume group cannot collect synchronization point dumps (the KFPS02178-E message is output). Normal start, normal termination, and planned termination will also fail.	Recovers to the latest point in time, except for the shut-down file.#
		never	Shuts down the files created on the primary volume on which the error occurred. If an error occurred on a primary volume belonging to the paired logical volume group in which RDAREAs are created, the server that uses the applicable paired logical volume group outputs the KFPS02178-E message each time a synchronization point dump is collected.
Secondary volume error	All synchronous method	data	Shuts down the files created on the secondary volume on which the error occurred.	Recovers to the latest point in time, except for the shut-down files.
		never	Continues online operations.	Correct operation cannot be guaranteed.
	All asynchronous method	--		Recovers to the point in time when the error on the secondary volume occurred.
	Hybrid method	data	If an error occurred on the secondary volume belonging to the paired logical volume group in which RDAREAs are created, online operations continue. However, the server that uses the applicable paired logical volume group cannot collect synchronization point dumps (the KFPS02178-E message is output). Normal start, normal termination, and planned termination will also fail. If an error occurred on the secondary volume belonging to the paired logical volume group in which the system files are created, HiRDB shuts down the files created on the secondary volume on which the error occurred.	Recovers to the latest point in time, except for the shut-down files.#
		never	Continues online operations. If an error occurred on the secondary volume belonging to the paired logical volume group in which RDAREAs are created, the server that uses the applicable paired logical volume group outputs a KFPS02178-E message each time a synchronization point dump is collected.	Correct operation cannot be guaranteed.

Legend:

--: Not applicable

#

Excludes situations in which the operations explained in 4.2 Notes on operation when using the hybrid method are being performed.