Progress
Database Administration
Guide and Reference
CRC Codes and Redundancy In Backup Recovery
To recover corrupted backup blocks, Progress relies on:
- CRC codes to identify bad blocks. A CRC code is automatically calculated for each Progress backup block whether or not you specify a redundancy factor.
- Error-correction blocks to recover bad blocks. Error-correction blocks are included in the backup only if you explicitly request them with the -
red
parameter of the backup utility.
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