Hmm,  I did notice after we upgraded to 7.1.1 with SDLT that we seem to be
have more write failures.  This was with no SAN however.  On our storage
node it turned out to be a combination of drives and a batch of tapes.
On the main server several tapes were removed from rotation.

It seemed, at the time, that 7.1.1 was more "sensitive" to media errors, or
perhaps it was CDI.  Another thought was that perhaps the media errors were
always there and 7.1.1 was reporting them better.  Problem was, the errors
were physical scsi read/write errors..they should have been there before
also.   Getting rid of quite a bit of media seemed to curtail the media
errors.

Sorry, could not be of more help.

Robert Maiello
Pioneer Data Systems


On Wed, 4 Aug 2004 19:01:08 +0300, Itzik Meirson <imeirson AT MBI.CO DOT IL> 
wrote:

>It seems that we are experiencing som LTO instability after upgrading from
Networker 6.1.x to 7.1.x.
>It seems as if after the upgrade we are getting very sporadic tape I/O
errors that are causing premature tape closure. We have tried to disable
CDI but that did not realy solve the problem.
>I wonder if any of you have seen such problems and could recommend a
procedure to solve the problem.
>Itzik
>
>
>
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