Re: NTBackup - The device reported an error on a request to write data to media.
- From: "Pegasus \(MVP\)" <I.can@xxxxxxxxxx>
- Date: Tue, 17 Jun 2008 06:57:36 +0200
"Damon" <enlighten@xxxxxxxxxxxxxxxxx> wrote in message
news:C5591EA6-3203-4C98-B4E3-0F5C306DD20D@xxxxxxxxxxxxxxxx
Hi,
I'm having some problems with NTBackup. We currently have 5 servers which
we have two NTBackup jobs set-up on each server. One backup job for each
server is for backing up system state. The next backup job which runs
after that backs up the files and then the system state backup.
The problem that I am getting is that on some days the backups on
different servers fail, its currently random as to which backup will fail
and on what day. When they fail the error log always contains the
following:
Error: The device reported an error on a request to write data to media.
Error reported: Unknown error.
Then if it was an exchange backup
Error: SERVER\Microsoft Information Store\First Storage Group is not a
valid drive, or you do not have access.
If it was a file backup (the drive letter will change depending on where
the files are being backed up.
Error: E: is not a valid drive, or you do not have access.
If I go and run that schedule task again it will succeed. Because the
backups can run perfectly I think that the error which is being reported
is not correct because obviously the drives are accessible. What I'm
thinking it could be (I'm guessing here) is that maybe this is the error
that you get when doing a backup across the network and maybe the network
connection drops out for a second.
I really need to get this sorted and working, does anyone have any ideas
on what I should do here?
Cheers
Damon
Instead of scheduling ntbackup.exe directly, embed it in a batch
file as below, then examine the contents of c:\test.log after the
next failure.
@echo off
echo Start of job: %date% %time% %UserName% >> c:\test.log
net use >> c:\test.log
copy c:\test.log "{Destination}" 1>>c:\test.log 2>>&1
ntbackup /.. /..
echo End of job: %date% %time% %UserName% >> c:\test.log
echo. >> c:\test.log
Replace {Destination} with the drive\folder that the backup job
itself uses.
.
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