while taking the backup of exchange2003 differential backup i am facing the below errors in the bpbkar logs which shows that the circular logging is enable, although the circular logging is not enable. i am using my Exchange as cluster with 2 nodes  

9:45:06.804 AM: [15444.18212] <2> WinMain: DAT - standard error handle = 1840

9:46:25.554 AM: [15444.18212] <2> ov_log::V_GlobalLog: ERR - BEDS_AttachToDLE():FS_AttachToDLE() DeviceName:'\\evsmail\Microsoft Information Store\Second Storage Group' BackupReason:0x2 Failed! (0xE0008497:Incremental and differential backups are not possible because Microsoft Exchange is configured for circular logging.

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