BackupEDGE 3.0 - Content Databases
During the backup phase of a scheduled job, BackupEDGE calculates a checksum for each file or object archived and adds it to the archive. During the verify / index phase, BackupEDGE...
- Re-calculates the checksum to make sure what it read is what it wrote.
- Verifies the content of the archive against the original disk file (if bit-level verify is enabled).
- Creates an index of the archive and stores it in a database.
The index database is stored on the hard drive. During Instant File Restore or Fast File Restore, BackupEDGE uses the index to identify the location of the files / directories to be restored from the archive, which provides the shortest possible access time.
Whenever an archive is over-written or erased, its index is "forgotten", i.e. deleted.
After two days, indexes are highly compressed on the hard drive for maximizing space savings. If needed, they are quickly de-compressed on demand.
An index database for any archive can be re-created on demand via a simple scan of the archive.