Networker

Re: [Networker] IBM LTO-3 Drive on Solaris 8

2006-01-16 19:13:41
Subject: Re: [Networker] IBM LTO-3 Drive on Solaris 8
From: "Dean, James" <jdean AT SANZ DOT COM>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Mon, 16 Jan 2006 17:08:06 -0700
I have a few clients with the same scenario that you described and they were 
told by a couple vendor support teams that the initialization string was 
needed.  Each one of them supplied a different string and each customer had 
issues with drives going off line, tapes getting marked full 10MB into the 
tape, etc...

Once the initialization strings were removed and they used the native driver 
initialization the problems went away.

You do not need the st.conf entries if you have the latest st driver patch.  By 
saying that the LTO drives are supported natively essentially means that all 
functionality has been turned on for the drive(s).  The only reason to modify 
the st.conf for LTO drives is to override functionality / characteristics.  If 
you put entries into the st.conf file for LTO drives you will override all 
functionality that has been turned on.  Don't do it unless you absolutly need 
to (troubleshooting or specific needs).  If you do need to create an st.conf 
entry please refer to the man page on the ST driver. 
http://docs.sun.com/app/docs/doc/816-0222/6m6nmlt2q?a=view

A crude way to find out what is supported by your current driver is to run:  

>    strings /kernel/drv/st | grep LTO

To answer you last question, no it really wouldn't matter if you used another 
vendors st.conf entry.  It does matter what chearacteristics have been enabled 
though.  Refer to the man page if you think you need one.  Again, you don't 
need one for any LTO-3 drive if the latest patch is installed.

Regards,

James Dean
Program Manager / Sr. Solutions Engineer
SANZ, Inc.
Vienna, VA
(443) 871-2404  Cell
jdean AT sanz DOT com

http://www.sanz.com



-----Original Message-----
From: Legato NetWorker discussion
[mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU]On Behalf Of Paul Esson
Sent: Friday, January 13, 2006 4:18 AM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: [Networker] IBM LTO-3 Drive on Solaris 8


Folks,

 

I am currently configuring an ADIC Scalar i2000 Library with 3 x IBM
LTO-3 drives on a Solaris 8 server running Networker 7.2.1.  I have
applied Solaris patch 108725-22 which provides native support for the
IBM LTO-3 drive in the st driver.  Do I still need to put a specific
entry for the drive in the st.conf file?  I have read comments
suggesting that a) native support means there is no need for a st.conf
entry and b) native support will not guarantee the characteristics that
you might want from the drive.  Comments please?

 

If any one is using the IBM LTO-3 with Solaris and had made a st.conf
entry could you share the details please?  I have looked on the web and
found information on HP and Certance LTO-3 for Solaris but not IBM.
Would it matter if I used another vendor's LTO-3 settings?

 

Regards,

 

Paul Esson 
Redstor Limited 

Direct:          +44 (0) 1224 595381 
Mobile:         +44 (0) 7766 906514 
E-Mail:         paul.esson AT redstor DOT com 
Web:            www.redstor.com 

REDSTOR LIMITED 
Torridon House 
73-75 Regent Quay 
Aberdeen 
UK 
AB11 5AR 

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