Re: FAStT500

From: cbaker@GOODYEAR.COM
Date: Mon Jun 02 2003 - 13:02:40 EDT


John,

I am not seeing where you got the idea we were "single-connected aix box to
500" from my question?

We have two HBA's per P655 from 4 P655's via two fibre channel 8 port
switches to the A and B side of the FastT500.

Anyway, the solution to the problem was that early on, the two P655's that
were on AIX 5.1 had created/configured two (2) "dar" (dar0 and dar1).
Once I ran the following commands on the P655's, all was well:

   fget_config -l dar0
   fget_config -l dat1 {These showed the problems}

   rmdev -dl dar0 -R { The -R for recursive to remove the dar and the
   associated hdisk's}
   rmdev -dl dat1 -R

   rmdev -dl dac0
   rmdev -dl dac1

   cfgmgr

Thanks for everyone's assistance,

Christopher M. Baker
Senior Technical Support Analyst
DSE/TCO
Goodyear Tire and Rubber Company

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                      John Jolet
                      <john.jolet@FXFN To: aix-l@Princeton.EDU
                      .COM> cc: (bcc: Chris Baker/NA/GDYR)
                      Sent by: IBM AIX Subject: Re: FAStT500
                      Discussion List
                      <aix-l@Princeton
                      .EDU>

                      05/30/2003 03:39
                      PM
                      Please respond
                      to IBM AIX
                      Discussion List

according to ibm, a single-connected aix box to a 500 is "not
supported"...you got lucky, i've rebooted my 6h1 twice in the last two days
trying to make that unsupported configuration work. you either need to
dual-connect the aix boxes, or get a fibre-channel hub or
switch..dual-connect the hub or switch, then single-connect the aix boxes
to it. i'd STRONGLY advise against trying to get the single-connected
direct to the 500 working.

-----Original Message-----
From: cbaker@GOODYEAR.COM [mailto:cbaker@GOODYEAR.COM]
Sent: Friday, May 30, 2003 1:21 PM
To: aix-l@Princeton.EDU
Subject: FAStT500
Importance: High

We just installed a rack of P655 and a FAStT500 with 500 GB of disk.

On two of the P655's we have a fiber card in the unit and a second fiber
card in a RIO rack. All four of the fiber cards go to the FastT via two
switches. One to A the other to B on the FastT.

Two other P655 have two fiber cards each, but theirs are all in the P655
unit, no RIO rack.

If we do a "cfgmgr" on either of the first P655's, we get an error in
"SMclient" that either A or B has failed. You look and usually A has
failed to B. Look at "lsdev -Cc disk" on the P655 that just ran "cfgmgr"
and the first time it only has one drive and it is only "Defined". Look at
the LUN's and they are both on A. Now run the cfgmgr again, now we see two
hdisks, both on the same interface ( 1j-08-01 ) and they are available.
Look on SMclient and both LUNs are on B. Any additional cfgmgr's and no
change.

BUT, on the other P655 that share two other LUNs, none of this happens. A
run of cfgmgr always shows two hdisks on different channels (one on
1j-08-01 and the other on 1V-08-01 ) and the SMclient never shows a failure
of A or B???

Any ideas?

Christopher M. Baker
Senior Technical Support Analyst
DSE/TCO
Goodyear Tire and Rubber Company

=================================================
Contains Confidential and/or Proprietary Information.
May not be copied or disseminated without the expressed
written consent of The Goodyear Tire & Rubber Company.
=================================================



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