Re: Force use of tape (was Re: SCSI Voodoo strikes...(continued))

2000-11-27 Thread Irena Solomon

Instead of just restarting, try shutting down for a minute and then
restarting. This will ensure that everything is cleared out.

Regarding the tape, Retrospect is likely thinking that the error was a
result of defective media. When it asks for a new tape, it's erring on the
side of caution and preventing you from writing data to a potentially
defective tape. Craig's suggestion will allow you to reuse that tape,
although with one tape, it will be the same in function as resetting the
catalog in a Recycle backup.

The 102 error is generated by the hardware and indicates that the Mac is
having trouble communicating with the drive. The simplest test that you can
do is a backup to a File backup set; this will indicate for sure if you are
dealing with a device problem. Next, try a backup to a different device if
you have one available to see if the problem lies in the device or the
computer. And once you've narrowed it down, go through the troubleshooting
steps in order to pinpoint the problem.

Of course, if you have any specific questions along the way, please give us
a call.

Regards,

Irena Solomon
Dantz Technical Support
925.253.3050

 Hi again,
 I only received one response to the email below about 102
 errors disappearing after restarts...so if anyone else has any light
 to shed it would be appreciated. Since I posted we have found that if
 IE crashes (which it does extremely frequently on the backup) machine
 then we will always get the 102 error unless we restart first.
 However, this is not the only cause of the problem...
 
 How do you know? Have you tried never running IE on the computer? If the
 problem goes away after a restart, there's definitely something corrupting
 your system over time. If the computer is a dedicated backup system, disable
 all unnecessary extensions and control panels and don't run IE to see if it
 happens again.
 
 It will always fail if IE has crashed (any maybe even if it has run)
 but sometimes it will fail if IE has not been run (eg over the
 weekend).
 
 Unfortunately the backup machine is used as a workstation during the
 day so we can't strip it down (at least not completely - we are in
 the process of trying to get rid of much as possible).
 
 
 ... when Retrospect gives us the 102
 error it assumes that the current tape cannot be used and asks for a
 new one next time the backup runs, even if the tape appears to be
 less than half full...
 
 So, is there any to force Retrospect to keep using that tape?
 
 I don't know of a way to get Retrospect to append to that tape, but you can
 certainly get Retrospect to use the tape by either setting the tape as
 missing or erasing the tape. In either case, Retrospect will recopy the
 files already on the media and continue to fill the tape.
 
 HTH,
 
 Craig
 
 
 So far we have only got to the stage where we are using 1 tape per
 set (we haven't brought all the clients online yet because of the
 problems we are having). In that case I assume reseting the catalog
 is equivalent to your suggestions. We were hoping to avoid having to
 re-copy all the data already on the tape because of the difficulties
 getting our G4s backed up (519 errors, see separate thread).



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RE: Force use of tape (was Re: SCSI Voodoo strikes...(continued))

2000-11-26 Thread Craig Isaacs



 Hi again,
   I only received one response to the email below about 102
 errors disappearing after restarts...so if anyone else has any light
 to shed it would be appreciated. Since I posted we have found that if
 IE crashes (which it does extremely frequently on the backup) machine
 then we will always get the 102 error unless we restart first.
 However, this is not the only cause of the problem...

How do you know? Have you tried never running IE on the computer? If the
problem goes away after a restart, there's definitely something corrupting
your system over time. If the computer is a dedicated backup system, disable
all unnecessary extensions and control panels and don't run IE to see if it
happens again.

 ... when Retrospect gives us the 102
 error it assumes that the current tape cannot be used and asks for a
 new one next time the backup runs, even if the tape appears to be
 less than half full...

 So, is there any to force Retrospect to keep using that tape?

I don't know of a way to get Retrospect to append to that tape, but you can
certainly get Retrospect to use the tape by either setting the tape as
missing or erasing the tape. In either case, Retrospect will recopy the
files already on the media and continue to fill the tape.

HTH,

Craig



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RE: Force use of tape (was Re: SCSI Voodoo strikes...(continued))

2000-11-26 Thread Adrian Smith

At 9:00 PM -0800 26/11/00, Craig Isaacs wrote:
   Hi again,
  I only received one response to the email below about 102
  errors disappearing after restarts...so if anyone else has any light
  to shed it would be appreciated. Since I posted we have found that if
  IE crashes (which it does extremely frequently on the backup) machine
  then we will always get the 102 error unless we restart first.
  However, this is not the only cause of the problem...

How do you know? Have you tried never running IE on the computer? If the
problem goes away after a restart, there's definitely something corrupting
your system over time. If the computer is a dedicated backup system, disable
all unnecessary extensions and control panels and don't run IE to see if it
happens again.

It will always fail if IE has crashed (any maybe even if it has run) 
but sometimes it will fail if IE has not been run (eg over the 
weekend).

Unfortunately the backup machine is used as a workstation during the 
day so we can't strip it down (at least not completely - we are in 
the process of trying to get rid of much as possible).


  ... when Retrospect gives us the 102
  error it assumes that the current tape cannot be used and asks for a
  new one next time the backup runs, even if the tape appears to be
  less than half full...

  So, is there any to force Retrospect to keep using that tape?

I don't know of a way to get Retrospect to append to that tape, but you can
certainly get Retrospect to use the tape by either setting the tape as
missing or erasing the tape. In either case, Retrospect will recopy the
files already on the media and continue to fill the tape.

HTH,

Craig


So far we have only got to the stage where we are using 1 tape per 
set (we haven't brought all the clients online yet because of the 
problems we are having). In that case I assume reseting the catalog 
is equivalent to your suggestions. We were hoping to avoid having to 
re-copy all the data already on the tape because of the difficulties 
getting our G4s backed up (519 errors, see separate thread).

Thanks
Adrian


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