Backups With Checksum Validation

Eric Blinn shows the upside to performing checksum validation during backups:

Since a full backup reads every data page it makes sense that we can ask SQL Server to calculate and compare each checksum during this operation. Even a differential backup reads all of the pages for any extent (a group of 8 data pages) if any one page in it changes so it will validate some pages that didn’t change.

Read on for a demonstration.

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