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Troubleshooting SCSI tape access?

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The Question is:

 
We have three ALPHA systems(ES40) working in openvms cluster environment.We are
 facing a peculiar problem in with two tape drives(TZ89) which are connected
 through SCSI cards. Generally these drives are taking less than five minutes
 to perform backup/retr
iving data. But after about a 30-45 days, the drives are taking abnormal time
 to perform the activity. The problem is getting solved immediatly after a
 openvms shutdown/startup. Thereafter the cycle repeats after 30-45 days.
 
Since the problem is getting solved immediatly after openvms shutdown/startup,
 i would like know is there any openvms patch available in which this problem
 is addressed. I searched the patch tree, i couldn't find any such rememdial
 patch.
 
I shall be grateful, if some light is thrown on this. Awaiting your reply.

The Answer is :

 
  Without specific knowledge of the cause of this error, the OpenVMS
  Wizard cannot provide you with information on the availability of
  an ECO for this problem -- if any.
 
  Please apply the mandatory ECO kits for the OpenVMS release in
  question and please consider upgrading to a supported OpenVMS
  release.  (To find the ECO kits, please see the pointers in
  the OpenVMS Frequently Asked Questions (FAQ).)
 
  Please force a system crash and thus cause OpenVMS to write a
  system dump upon the next occurance of this problem and then
  contact the support center directly.
 

  
     
     answer written or last revised on ( 31-JAN-2003 )
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