os error 64: received on backup device

  • I have defined a backup device to a network drive and after the backup starts, I recevie the following message. This is occurs after the device is being written to.

    BackupMedium::ReportIoError: write failure on backup device '\\nyc-sql-bkp\nycsql07\LKEYDB_BKUP.BAK'. Operating system error 64(The specified network name is no longer available.).

    TIA for your assistance.

  • Can you ping the server nyc-sql-bkp from the sql server?

    Is the share available?

    Does the sql Agent account has permissions to access that share?

  • The answer is yes to all of your questions. I was wondering if it might be a network issue. It works if I use northwind as the database to be backed up but not with a database of 15gb

  • I have had similar problems, in the end I have determined that SQL Server has problems with Copying very large files over networks. I tend to backup local and then copy that to the network location. Robocopy can be more reliable.

  • I agree with the file size issue. I seem to only have problems when the file is over 2GB however I was trying to copy to a compressed folder. I uncompressed the folder and still got the same error if the file was over 2GB.

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