Event ID - 8

Event Id8
SourceMSEchangeIS
DescriptionMSExchangeIS ((479)) Redoing log file
D:\exchsrvr\MDBDATA\edb.log  
or
MSExchangeIS ((479)) size mismatch on logfile
D:\exchsrvr\MDBDATA\edb.log. IO size %4 expected while returned size is %5
Event InformationThe following link to a Microsoft article may help you to resolve this issue.
Reference LinksEvent Log Displays Different Error Description

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