Brian;

I couldn't find this in the docs anywhere, however, according to HP; it's the 
better practice.  This was discovered at a recent meeting between our company 
and HP not too long ago.  We haven't had time to rectify our current 
configuration to employ this suggestion however does make sense when the 
logistics of how the fiber switches are scanned are taken into consideration.

We were having a lot of device discovery issues and the above method should 
prove to prevent that.

Good luck,

Carter Fowler
Hardware Service Technician
Technology Services Division
Off: 519.661.5192
Cel: 519.870.4956
Em: cfowler AT london DOT ca

-----Original Message-----
From: Brian.Narkinsky AT DEP.STATE.FL DOT US 
Sent: Monday, February 24, 2003 11:46 AM
To: Brian.Narkinsky AT DEP.STATE.FL DOT US; NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Subject: Re: SAN storage node

Can you tell me where you found out about this part?
 
.  Also, if you employ HP / Compaq Fiber Switches, you may wish to have all
tape devices configured to connect physically to the first 4 ports on the
switch.  This has to do with determining the order of discovery of the
devices.  
 
I am having problems with this and am wondering if this is my problem.
 
Brian Narkinsky

 -----Original Message----- 
 From: Fowler, Carter [mailto:CFowler AT CITY.LONDON.ON DOT CA] 
 Sent: Mon 2/24/2003 8:50 AM 
 To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU 
 Cc: 
 Subject: Re: [Networker] SAN storage node
 
 

 Hi there;
 
 We have a Win2K Server with a 9740 and 4 x 9840's and 1 x 9840B
drive.  We have two of the 9840's attached to an SN3250 and the 9840B is
directly attached.  We have a "backup zone" on the FC which currently
contains the SN3250 and the 9840B and a designated storage node.  Also, if
you employ HP / Compaq Fiber Switches, you may wish to have all tape devices
configured to connect physically to the first 4 ports on the switch.  This
has to do with determining the order of discovery of the devices.  Keeping a
separate zone will keep down the SCSI bus resets which may occur if you have
only one zone and all your servers can see the fiber devices.
 
 That's how I understand it...  :)
 
 Carter Fowler
 Hardware Service Technician
 Technology Services Division
 Off: 519.661.5192
 Cel: 519.870.4956
 Em: cfowler AT london DOT ca
 
 -----Original Message-----
 From: mooney AT DOGBERT.CC.NDSU.NODAK DOT EDU
 Sent: Friday, February 21, 2003 10:53 AM
 To: mooney AT DOGBERT.CC.NDSU.NODAK DOT EDU; NETWORKER AT LISTMAIL.TEMPLE DOT 
EDU
 Subject: Re: SAN storage node
 
 In regard to: Re: [Networker] SAN storage node, Bruno Madeira said
(at...:
 
 >I have a customer that has a configuration with about 16 SAN Storage
 >Nodes and it's +- easy to install.
 >
 >- One of the problems is the jbconfig, that is quite big (16 SNodes
x 6
 >drives + Server = 102 devices). Make a text file with all the
answers to
 >the questions that the jbconfig will make, after a while it will be
the
 >same answers;
 >- We have a ADIC Scalar 100 SDLT with 6 drives and a SNC5101
(SCSI-FC);
 >- Make sure that the HBA can do persistent binding (Legato wont
support
 >HBA's that doesn't do it), for ex. Emulex (not QLOGIC).
 
 Bruno, can you expound on this a bit more?  I'm the NetWorker expert
at
 our site, but I can't say I'm a SAN expert yet.  We're looking to
hook our
 SCSI-based STK9710 library with SDLT drives into one of our two
fabrics
 using a pair of STK SN3250 FC<->SCSI routers.  For the forseeable
future,
 the only thing that would be in that zone would be the host's HBA
 and the two SN3250s.
 
 I had been planning on using the QLogic 2300 HBA in the Linux box
that
 will be our new NetWorker server.
 
 Tim
 --
 Tim Mooney
mooney AT dogbert.cc.ndsu.NoDak DOT edu
 Information Technology Services         (701) 231-1076 (Voice)
 Room 242-J6, IACC Building              (701) 231-8541 (Fax)
 North Dakota State University, Fargo, ND 58105-5164
 
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