[Networker] Bad Block Errors on Legato Server

Hi All,
  I run legato 7.2.1 on windows 2000 SP4 as my legato server.
  I have fiber HP LTO2 tape drives.
  I have all the latest windows drivers, patches and tape drive firmware.
   
  My problem is i intermittently have been getting these bad block messages for 
over 9 months. I get several of them in one week, then they go away for a month 
or 2, then they come back.
  I have opened a case with legato, storagetek and HP. They all claim it is bad 
tapes. But I can usually reuse the bad tape with no problems at a later date.
  I have also sent some of the tapes back to the maker and they test out OK.
  Any idea what is the cause of this?
  It happens on all my tape drives at one time or another and all different 
tapes.
  I have replaced several tape drives and tried 3 different brands of tapes, 
but it still keeps popping up periodically.
  I have had my server, library, tape drives, switches, hbas and cables all 
checked out. They all seem OK.
   
   
  Every time it happens I get this error in the windows event log:
   
   
  Event Type: Error 
Event Source: hplto 
Event Category: None 
Event ID: 7 
Date: 04/22/2006 
Time: 12:16:48 AM 
User: N/A 
Computer: LegatoServer
Description: 
The device, \Device\Tape2, has a bad block. 
Data: 
0000: 0f 00 18 00 01 00 70 00 ......p. 
0008: 00 00 00 00 07 00 04 c0 .......Ã? 
0010: 00 01 00 00 9c 00 00 c0 ....&#156;..Ã? 
0018: 00 00 00 00 00 00 00 00 ........ 
0020: 00 00 00 00 00 00 00 00 ........ 
0028: 01 00 00 00 02 00 00 00 ........ 
0030: 00 00 00 00 11 00 00 00 ........ 
0038: 02 84 00 00 00 14 03 00 .&#132;...... 
   
  Regards,


Tape King
CEO
  Gold Tape Supply
  Low Prices on All New Tapes.
Email:   tapeking01 AT yahoo DOT com
Internet: http://stores.ebay.com/Gold-Tape-Supply
   

                
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