Networker

Re: [Networker] tape drive : service mode

2008-12-17 17:51:04
Subject: Re: [Networker] tape drive : service mode
From: Fazil Saiyed <Fazil.Saiyed AT ANIXTER DOT COM>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Wed, 17 Dec 2008 16:49:11 -0600
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

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