Networker

Re: [Networker] SCSI reset on HP equiment

2005-04-28 17:58:49
Subject: Re: [Networker] SCSI reset on HP equiment
From: Siobhan Ellis <Siobhan.Ellis AT ENSTOR DOT COM>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Fri, 29 Apr 2005 07:54:06 +1000
There is a fix for this. Actually, if NetWorker is writing to the tape when
it happens, NetWorker knows. The danger is when the tape is just mounted. It
now goes through extra long checks to make sure it is OK. 
 
One thing you can do to help is to switch of SCSI bus resets on the NSR
inside the MSL.
 
 
 
Siobhán Ellis
Senior Technology Consultant
Enstor
Level 10, 118 Alfred St
Milsons Point
NSW 2061
Australia
 
Mobile: +61 424 750 544
Phone: +61 2 9900 2100
Fax: +61 2 9900 2199
e-mail: siobhan.ellis AT enstor.com DOT au

>>> Brian.Narkinsky AT DEP.STATE.FL DOT US 28/04/2005 11:39:14 pm >>>

ANY HSG80s?  MAke sure they are upgraded to 8.7.  We had all kinds of
problems until we upgraded the DIsk controllers to the latest realease.

BRian

-----Original Message-----
From: Legato NetWorker discussion
[mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU]On Behalf Of Pedersen, Jan (GE
Consumer Finance)
Sent: Thursday, April 28, 2005 2:42 AM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: [Networker] SCSI reset on HP equiment


Hi all

I am having a lot of troubles with SCSI resets on my backup, which causes
Legato to produce backups with "holes" in.

I have a HP 5000 SAN and 2 MSL 6030 libaries, and 7 storage nodes.
All is running Windows 2000/2003
The Legato version is 7.1.2
My HBA's are Emulex and Qlogic.
-The Qlogic HBA's are setup to persisten binding with Qlogic's SANSURFER
software. 
Zones created on the SAN switch, which only holds the backupserver, the
libarys and the storagenodes.

What I can see happening is that through the night when the backup is
running, I sometimes gets a "SCSI reset" command send to the tapedrives,
this
causes them to rewind the tape, this is unvisible to Legato, so when the
tapedrives are rewinding the tapes, Legato still thinks all is fine and
continues to write to the tape, allthough it now is positioned to the
start.
So when I later try to check the tape with "scanner -nv", it gives:
scanner: Reading the label done
scanner: SYSTEM error: Tape label read for volume ? in pool ?, is not
recognised by Networker: unknown error 234 (0xea)

Is there anyone on the list that has had this problem and solved it?


____________________________________________


Venlig hilsen
Jan Pedersen



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Note: To sign off this list, send a "signoff networker" command via email
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should be sent to stan AT temple DOT edu
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