Could not redo log record (7699660:807911:68), for transaction ID (7:-1072820627), on page (3:2044928), allocation unit 72057594078167040, database '<cl_support>' (database ID 5).
Page: LSN = (7699660:489185:317), allocation unit = 6488064, type = 8.
Log: OpCode = 7 (LOP_SET_BITS), context 8 (LCX_GAM), PrevPageLSN: (7699660:766590:822).
There may be pages that are missing some updates from before the checkpoint associated with the backup. Because of this, SQL Server only starts page updates from the last completed checkpoint before the backup starts copying pages.
Article ID: 2948180 - Last Review: 22 Apr 2014 - Revision: 1