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sqlsmort asked

maintenance plan backup job failed for only one db

Error: 18210, Severity: 16, State: 1. BackupIoRequest::ReportIoError: write failure on backup device '\\BACKUP'. Operating system error 59(An unexpected network error occurred.). Error: 3634, Severity: 16, State: 2. The operating system returned the error '59(An unexpected network error occurred.)' while attempting 'DiskChangeFileSize' on '\\BACKUP'. The operating system returned the error '59(An unexpected network error occurred.)' while attempting 'FlushFileBuffers' on '\\BACKUP

backups
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JohnM answered

My initial guess is that the network had a hiccup during the backup process and it couldn't communicated with that destination any further.

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