I do agree with you to a point. We usually find that the drive or the
switch has had a bump. We set the max consecutive errors to a large
number, load/unload a tape and then reset it back to 20. Sometimes
we've found we need to power cycle the drive. Only once have we had to
replace a drive in 4 years. Just lucky I guess ;-)

Ken

On Wed, Dec 17, 2008 at 3:49 PM, Fazil Saiyed <Fazil.Saiyed AT anixter DOT com> 
wrote:
> Hello,
> I agree, increasing drive error count to much higher values just masks the
> problems for bit longer, does nothing to solve it.
> You are either having hardware issues, including ( Scsi resets, cable
> errors, switch issues) or driver issues.
> Another possibility is of drive sequencing change, did you implement
> features such as persistent binding ?
> One easy way to test if your drive order is not right may be to mount all
> drive with any tapes via Library GUI ( hardware),then use legato cmd line
> to unmount one tape at a time, if you unmount say Tape0 and you see that
> Tape2 is unloaded then you know you have drive sequencing issue.
> Remember to resync the drive after such exercise via nsrjb -HEvvv and
> inventory the tape lib again & do this while there are no backups running.
> HTH
>
> To sign off this list, send email to listserv AT listserv.temple DOT edu and 
> type "signoff networker" in the body of the email. Please write to 
> networker-request AT listserv.temple DOT edu if you have any problems with 
> this list. You can access the archives at 
> http://listserv.temple.edu/archives/networker.html or
> via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER
>



-- 
They that can give up essential liberty to obtain a little
temporary safety deserve neither liberty nor safety.
--Benjamin Franklin

To sign off this list, send email to listserv AT listserv.temple DOT edu and 
type "signoff networker" in the body of the email. Please write to 
networker-request AT listserv.temple DOT edu if you have any problems with this 
list. You can access the archives at 
http://listserv.temple.edu/archives/networker.html or
via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER