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NTBackup End-Of-Media Error Writing to an external USB Hard Drive

Posted on 2004-04-03
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Last Modified: 2009-07-08
A client of mine has a W2K Server with an external Lacie 160 GB USB 2.0 hard drive matched to the size of the internal hard drive.  Only 19 GB is in use on the applications and data volume to be backed up.

We set up NTBackup (the built-in backup program) to run a nightly job to back up the volume to the Lacie drive.

The job terminates after 15 GB has been backed up.  The error says NTBackup encountered an end-of-media error, yet there is plenty of space on all drives - the C drive has 8 GB free, the D drive has about 130 GB free, and the Lacie drive has about 130 GB free.

I tried running the job several times with the same error.  I also deleted the .bkf file NTBackup is writing to, thinking it might be corrupt, knowing that NTBackup would recreate it.  No change.

Any suggestions other than buying an expensive commercial program like the Veritas Backup Exec or CA Arcserve products?
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Question by:streida
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njava earned 250 total points
ID: 10762202
I had a similar problem when my ntbackup was adding the next backup to the previous and so on instead of overwriting it. However, the first job always ran fine. Nonetheless, I switched to BackupExec and have been using it for two years already with no problems at all.
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by:streida
ID: 10762885
I haven't been able to determine the cause of the problem, so I'll likely recommend to the client they purchase Backup Exec or ARCServe 11.  Both sell for under $500, although agents for Exchange and SQL Server are over $600, more than the base software!
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Author Comment

by:streida
ID: 13148784
I'm sorry I forgot to get back about this problem.  I resolved it.  It was something very simple; the external USB drives were not formatted as NTFS partitions; they were formatted as FAT32 drives, limiting the size of the volumes!
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