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[Networker] AW: [Networker] AW: [Networker] sudden change in tape capacity?

2005-10-28 08:37:39
Subject: [Networker] AW: [Networker] AW: [Networker] sudden change in tape capacity?
From: IT-Administration ST <admin.st AT KVBAWUE DOT DE>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Fri, 28 Oct 2005 14:26:13 +0200
As our networker server is a solaris system I say the W2K3 storage nodes.
But as certain solaris tools which can manage tape devices had also to be 
disabled I would suppose W2K3 networker servers too.


     Freundliche Grüße

   Roman Böhm / Kind regards
 

 >-----Ursprüngliche Nachricht-----
 >Von: King, David - Eastman [mailto:dking AT eastman DOT com] 
 >Gesendet: Freitag, 28. Oktober 2005 14:05
 >An: Legato NetWorker discussion; IT-Administration ST
 >Betreff: RE: [Networker] AW: [Networker] sudden change in 
 >tape capacity?
 >
 >Are you saying that the RSM should be disabled on W2K3 
 >Networker servers and W2K3 storage nodes? 
 >
 >
 >David L. King
 >
 >
 >-----Original Message-----
 >From: Legato NetWorker discussion 
 >[mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On Behalf Of 
 >IT-Administration ST
 >Sent: Thursday, October 27, 2005 5:00 AM
 >To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
 >Subject: [Networker] AW: [Networker] sudden change in tape capacity?
 >
 >Hello dear fellow-networkers,
 >
 >we faced the problem of premature marking tapes as full both 
 >with DLT8000 drives and with LTO2 drives for a couple of 
 >months. As the native capacity of LTO2 tapes is 200 GB, you 
 >must know what it looks like when a 200 GB tape is marked 
 >full at the capacity of !!! 0 kB  !!!.
 >
 >As the reason was is claimed by leading supporters and 
 >hardware experts of the Siemens company that there happen 
 >undesired tape rewinds. As the block size at the tape header 
 >differs from the block size of the data section after the 
 >header, when Networker notices that it got a different block 
 >size it will mark the tape as full and mark the savesets as suspect.
 >
 >Maintaining networker storage nodes we had to disable the 
 >"Removable storage Manager" of Win2k resp. Win2k3. The funny 
 >thing is that how Legato introduces Networker 7.x it sounds 
 >like if Networker and the removable storage manager would be 
 >"best friends".
 >
 >
 >     Freundliche Grüße / Kind regards
 >
 >   Roman Böhm
 >
 >
 >
 > 
 >
 > >-----Ursprüngliche Nachricht-----
 > >Von: Legato NetWorker discussion
 > >[mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] Im Auftrag von 
 >Albert  >Eddie Contractor AFRPA/ESS
 > >Gesendet: Mittwoch, 26. Oktober 2005 23:08
 > >An: NETWORKER AT LISTSERV.TEMPLE DOT EDU
 > >Betreff: Re: [Networker] sudden change in tape capacity?
 > >
 > >My OS is (Key-up Darkside music here) Windows 2003, but it 
 >is  >the same symptom.
 > >
 > >For the compression issue, there are compression settings 
 >in  >both the Networker Software and hardware setting for the 
 >tape  >drive, you may have compression OFF somewhere.
 > >
 > >
 > >Man I love it when I am right and I get to help  
 >>someone...Woo-Hoo! /ALE  >  >Eddie Albert, Network Serf  
 >>Air Force Real Property Agency  >Executive Services/Computer 
 >Systems  >Desk (703) 696 - 5509 - Hip (703) 517-3855  
 >>Eddie.Albert AT afrpa.Pentagon.af DOT mil
 > >
 > >
 > >> -----Original Message-----
 > >> From: Matt Temple [mailto:mht AT research.dfci.harvard DOT edu]
 > >> Sent: Wednesday, October 26, 2005 2:22 PM  >> To: Albert 
 >Eddie Contractor AFRPA/ESS  >> Cc: Legato NetWorker 
 >discussion  >> Subject: Re: [Networker] sudden change in tape 
 >capacity?
 > >>
 > >> Albert Eddie Contractor AFRPA/ESS wrote:
 > >>
 > >> >I don't know about the control arm thing.
 > >> >
 > >> >But the thing we have in common was the premature 
 >marking  >> tapes FULL at  >> >80 GB and my library was SCSI 
 >attached using the same controller.
 > >> >
 > >> >
 > >> Very strange.   I did upgrade the firmware on the drives.   I 
 > >> had forgotten,
 > >> because there were so many other problems -- that's why I 
 > >upgraded the  >> firmware.
 > >> But now I"m going to have a look at the dates:
 > >>
 > >> October 10 is when I moved the sony file:  
 >sdx900v_0102.x90 There  >> seems to be a relationship.
 > >>
 > >> Density was erratic before that -- as low as 90 and as 
 >high as 180.
 > >> But now it's never above 80 gb.
 > >> I've NEVER gotten 200 gb on these tapes.   I have an ASC39160 
 > >> controller
 > >> card I'm going to substitute.   I don't normally see any scsi 
 > >> errors to
 > >> account
 > >> for this.   Right now I'm getting much more data on my 
 >AIT-3 tapes!
 > >> Really strange.   What version Linux are you using?   What driver?
 > >>
 > >> >Is it possible you/someone upgraded the firmware on your 
 >drive  >> >with(out) your knowledge?
 > >> >
 > >> >Could someone have upgraded the drivers for your drives  
 >>> with(out) your  >> >knowledge?
 > >> >
 > >> >While speaking to the elite tech support folks at Legato 
 > >> they said that  >> >can happen when Legato Networker 
 >receives "too many" SCSI errors.
 > >> >
 > >> >They didn't tell me how many was too many... Sorry.
 > >> >
 > >> >Hope this helps.
 > >> >
 > >> >Semper Fidelis, /ALE
 > >> >
 > >> >Eddie Albert, Network Serf
 > >> >Air Force Real Property Agency
 > >> >Executive Services/Computer Systems  >> >Desk (703) 696 
 >- 5509 - Hip (703) 517-3855  >> >Eddie.Albert AT afrpa.Pentagon.af DOT mil
 > >> >
 > >> >
 > >> >
 > >> >
 > >> >>-----Original Message-----
 > >> >>From: Legato NetWorker discussion
 > >> >>[mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On Behalf Of 
 >Matt Temple  >> >>Sent: Wednesday, October 26, 2005 11:27 AM  
 >>> >>To: NETWORKER AT LISTSERV.TEMPLE DOT EDU  >> >>Subject: 
 >[Networker] sudden change in tape capacity?
 > >> >>
 > >> >>All,
 > >> >>
 > >> >>       Something very strange has happened to my storage node...
 > >> >>First of all, the node is a 126-slot Qualstar with 3 
 >AIT-4 drives.
 > >> >>For a number of months, this unit has worked well.   
 >It's attached
 > >> >>to an HP server running Fedora core 1.   I know this isn't 
 > >> officially
 > >> >>supported, but has always worked flawlessly on both the 
 > >server and  >> >>this storage node.
 > >> >>
 > >> >>          Something suddenly changed.   First, I had some really
 > >> >>weird robot-amr failures, including one instance where 
 >a tape was  >> >>sitting ejected from one of the drives and 
 >there was a tape
 > >> >>in the gripper arm waiting to be inserted.   I haven't 
 > >seen that in
 > >> >>all of the 7 years I've been using Networker.   On at least
 > >> >>one occasion, I've attempted to move a tape with the  
 >>library front  >> >>panel and received a message that the 
 >source was empty
 > >> >>(ejected tape) when it clearly was not.   And suddenly, 
 >the tapes
 > >> >>are being marked full with about 80 GB (these are 
 >AIT-4)  >> with no error  >> >>messages showing up.  I'm 
 >using an Adaptec 39320A
 > >> >>and the AIC79XX driver.   This is a dual channel card and 
 > >> >>I've switched
 > >> >>the two
 > >> >>cables around -- no change -- just erratic behavior, 
 >and  >occasional  >> >>time when the robot arm doesn't move 
 >on program command  >(it always  >> >>moves by front panel)  >> >>
 > >> >>            I plan to install a different SCSI card --
 > >> 39160 to see if
 > >> >>there's any
 > >> >>change.   Any ideas of what's going on?   Does this kind 
 > >of erratic
 > >> >>scenario seem familiar to anyone?
 > >> >>
 > >> >>                                                            
 > >> >>Matt Temple
 > >> >>
 > >> >>--
 >
 > >> >>=============================================================
 > >> >>Matthew Temple                Tel:    617/632-2597
 > >> >>Director, Research Computing  Fax:    617/582-7820
 > >> >>Dana-Farber Cancer Institute  mht AT research.dfci.harvard DOT edu
 > >> >>44 Binney Street, LG300/300   http://research.dfci.harvard.edu
 > >> >>Boston, MA 02115              Choice is the Choice!
 > >> >>
 > >> >>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 wit 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
 > >> >>
 > >> >>    
 > >> >>
 > >>
 > >>
 > >> --
 > >> =============================================================
 > >> Matthew Temple                Tel:    617/632-2597
 > >> Director, Research Computing  Fax:    617/582-7820
 > >> Dana-Farber Cancer Institute  mht AT research.dfci.harvard DOT edu
 > >> 44 Binney Street, LG300/300   http://research.dfci.harvard.edu
 > >> Boston, MA 02115              Choice is the Choice!
 > >>
 > >>
 > >
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 > >
 >
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 >
 >[* Internet Mail *]
 >
 >

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