This section provides notes on synchronous high-speed backup.
The processing of the backup
swstbackup (Backup execution command) cannot be executed until the transaction and backup volumes are in an equivalent state.
Backup policy settings
A backup policy can still be set up if the number of registered volumes is enough for snapshot type high-speed backup, even if the number is not enough for synchronous high-speed backup. In this case, synchronous high-speed backup cannot be performed.
Volume group operation under synchronous processing
If the backup volume is a volume group, do not execute the vgchange (1M) command under synchronous processing (EC/REC) execution. If this occurs and the backup volume is inactive then it cannot be re-activated. Additionally, it will not be possible to perform commands including those to stop synchronous processing, execute backup and cancel backup synchronous processing. If accidentally inactivated, use ETERNUS Web GUI or similar to forcibly stop synchronous processing, and then activate the backup volume.
