Backup performance has improved in this version through a combination of greater parallelism and fewer I/O operations. To take advantage of this performance improvement, set the BACKUP statement BLOCK FACTOR option to a value greater than or equal to 25. The greater the value of BLOCK FACTOR, the more efficiently IQ BACKUP performs writes to the archive device. If enough memory is available, Sybase recommends setting BLOCK FACTOR greater than 25.
Performance is also improved for restores from Sybase IQ 12.6 backups. A restore from a backup performed prior to version 12.6 cannot take advantage of the performance improvement, but the database is properly restored.
