Networker

Re: [Networker] Windows2003 R2 change tape order at boot

2007-09-07 14:54:31
Subject: Re: [Networker] Windows2003 R2 change tape order at boot
From: "Hutchison, Jay A" <Jay.Hutchison AT VA DOT GOV>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Fri, 7 Sep 2007 14:49:47 -0400
Terry does the change to the registry need to be done on the clients as well as 
the networker server?  

-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On 
Behalf Of Terry Lemons
Sent: Thursday, September 06, 2007 4:32 PM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: Re: [Networker] Windows2003 R2 change tape order at boot

Hi Pierpa

I replied to your question (below) in a reply to another list posting.  But, I 
wanted to comment on something you mentioned, below:

"This tapes are connected through the SAN to a Qlogic FC board on my server on 
two different ports."

So, does your Windows 2003 R2 system see the same tape library twice: one time 
each on two different FC HBA ports?

If so, that sounds like a problem, in that multi-pathing for tape devices is 
very, very rare.

That said, the IBM Ultrium tape driver does support multi-pathing for both the 
control path (to the autochanger device) and to the data path (to the tape 
drive).  This is a licensed feature, and you need to pay IBM for the right to 
do this.  This is described in 
ftp://ftp.software.ibm.com/storage/devdrvr/Doc/IBM_Tape_Driver_IUG.pdf for the 
operating systems that support it.  Look for references to 'Control Path 
Failover' and 'Data Path Failover'.

Hope this helps.
tl

Terry Lemons
Backup Platforms Group
EMC²
where information lives
4400 Computer Drive, MS D239
Westboro MA 01580
Phone: 508 898 7312
Email: Lemons_Terry AT emc DOT com

-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] On 
Behalf Of Pierpa
Sent: Thursday, September 06, 2007 7:03 AM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: [Networker] Windows2003 R2 change tape order at boot

Hi all,
I've a problem I'm not able to solve.
I'm using NW7.4 on a Windows2003 R2 server with a ADIC scalar24 library with 2 
tapes in FC. This tapes are connected through the SAN to a Qlogic FC board on 
my server on two different ports. I've installed OEM IBM drivers for my LTO3 
drives but sometimes, rebooting the server, the order of the tapes changes. 
Therefore the library is confused, thinking to manage tape1 instead of tape0 
and viceversa. I don't know on Windows and on Qlogic if I can establish the 
tapes order. May I use on windows something like persistent binding ? 

Any suggestion will be appreciated

Pierp

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