Veritas if all is setup OK will freeze bad tapes or down bad dives.
If the the Veritas tape drivers are used and the correct firmware is loaded
on the drives>
Clean your drives, but check your Event viewer logs, then install the
Veritas Tape drivers from the Install CD, other tape drivers, then reboot,
then check the firmware on the drives, they need to be V107 or better -
Bad Firmware and or drivers will always cause media read and write errors -
most people blame it on veritas but the fact is that if all the
HCL and firmware are correct then when there is a bad tape Veritas will
freeze it and or down the drive or just freeze the tape.
-----Original Message-----
From: Whitt
To: Drunen van, Marcel; veritas-bu
Sent: 2/7/2005 8:30 AM
Subject: Re: [Veritas-bu] media write error 84
Marcel,
I was just going to increase the buffer until it fails to try and get
the best performance.
We are using DELL Poweredge servers with 2 x IBM LTO drives in a DELL
Powervault robot
Will let you know how I get on,
Thanks,
Ian
Drunen van, Marcel wrote:
>Ian,
>
>Don't know if that will work, but keep me posted. But you're right, 32k
>blocks will probably not perform too well.
>
>Just for curiosity, what sort of server hardware are you working on?
>
>Regards,
>
>Marcel
>
>-----Original Message-----
>From: Whitt [mailto:ianw AT fjserv DOT net]
>Sent: Monday, February 07, 2005 5:21 PM
>To: Drunen van, Marcel; veritas-bu
>Subject: Re: [Veritas-bu] media write error 84
>
>Marcel,
>
>I have created the SIZE_DATA_BUFFERS file and entered the contents
below
>
>and my backup is now running. Thanks.
>
>I will increase this file in multiples of 1024 bytes to get the optimum
>performance from my drives.
>
>Thanks again
>
>Ian
>
>Drunen van, Marcel wrote:
>
>
>
>>Ian,
>>
>>Create that file with the desired contents, which should be 32768
>>(32x1024) in your case.
>>
>>CU,
>>
>>Marcel
>>
>>-----Original Message-----
>>From: Whitt [mailto:ianw AT fjserv DOT net]
>>Sent: Monday, February 07, 2005 5:06 PM
>>To: Drunen van, Marcel
>>Subject: Re: [Veritas-bu] media write error 84
>>
>>Drunen van, Marcel wrote:
>>
>>
>>
>>
>>
>>>Ian,
>>>
>>>I was assuming you are on a Windows platform, is that correct?
>>>
>>>CU,
>>>
>>>Marcel
>>>
>>>-----Original Message-----
>>>From: Whitt [mailto:ianw AT fjserv DOT net]
>>>Sent: Monday, February 07, 2005 4:54 PM
>>>To: Drunen van, Marcel; veritas-bu
>>>Subject: Re: [Veritas-bu] media write error 84
>>>
>>>Drunen van, Marcel wrote:
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>>Ian,
>>>>
>>>>I recall having had this problem a long time ago. How much memory is
>>>>
>>>>
>>>>
>>>>
>>in
>>
>>
>>
>>
>>>>your system and are you using the /3GB or /PAE switches? IIRC we had
>>>>this problem on a W2K system with 16 GB of memory, there was some
>>>>
>>>>
>sort
>
>
>>>>of error that caused the buffer size to be very weird.
>>>>
>>>>CU,
>>>>
>>>>Marcel
>>>>
>>>>_______________________________________________
>>>>Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
>>>>http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>Marcel,
>>>
>>>The server has 8GB of memory, I am not sure what the /3GB or /PAE
>>>switches are that you are talking about.
>>>Can you explain these for me please ?
>>>
>>>Can you advise me how to change the buffer size ?
>>>
>>>Rgds,
>>>Ian
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>Marcel,
>>
>>I am using W2K yes, if i create the SIZE_DATA_BUFFERS file will NB
>>resize the file to whatever it requires ?
>>
>>I have the tuning guide for NB 4.5 on windows which I can currently
>>looking through
>>
>>Thanks,
>>Ian
>>
>>
>>
>>
>>
>
>
>
>
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Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
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