Quoting "Kraan, Helge van de" <Helge.vandeKraan AT VOLKSWAGEN DOT DE>:

> Hi
>
> the reason for our "flipped bit" problem is a tape-drive-unit (9940A from
> STK).
>
> i think it change bits before it write the stream to the tape, and this
> after the crc-tests.
> so we get no i/o error messages from the device. we taking the divce
> offline
> and find no more new failures.
>
> Helge
>

Were you also getting similar errors following the ANR1165E?


15     ANR1165E Data-integrity error detected for file in storage
                       pool TAPETOGOPOOL: Node SESHAT.SRC.UCHICAGO.EDU, Type

                       Backup, File space /home, fsId 11, File name
/elaine/ela-
                       ine.u88/requests/macarthur/ add_pred_enroll.ps.

07/13/03 11:31:15     ANR0548W Retrieve or restore failed for session 323 for

                       node SESHAT.SRC.UCHICAGO.EDU (SUN SOLARIS) processing

                       file space /home 11 for file
/elaine/elaine.u88/requests-
                       /macarthur/ add_pred_enroll.ps stored as Backup - data

                       integrity error detected.

07/13/03 11:31:15     ANE4035W (Session: 323, Node: SESHAT.SRC.UCHICAGO.EDU)

                       Error processing
'/home/elaine/elaine.u88/requests/macar-
                       thur/add_pred_enroll.ps': file currently unavailable on

                       server.

 07/13/03 11:32:17     ANR0542W Retrieve or restore failed for session 323 for

                       node SESHAT.SRC.UCHICAGO.EDU (SUN SOLARIS) - storage

                       media inaccessible.

I have a user getting this series from a 3494.

Fred Johanson