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This is how to fix these errors, downgrading firware is not recommended.
Correcting SCSI_DISK_ERR2's in the AIX Errpt Log - Navisphere Failover
Wizard
1.In the Navisphere main screen, select tools and then click the
Failover Setup Wizard. Click next to continue.
2.From the drop-down list select the host server you wish to
modify and click next
3.Highlight the CX-500 and click next
4. Under the specify settings box be sure to select 1 for the
failover setting and disable for array commpath. Click next to process.
5.The next screen is the opportunity to review your selections
(host, failover mode and array commpath); click next to commit
6.The following screen displays a warning message to alert you are
committing these changes. Click yes to process.
7.Next login to the AIX command prompt as root and perform the
following commands to complete stopping the SCSI_DISK_ERR2.
a.lsdev -Cc disk | grep LUNZ
(Filter for disks with LUNZ in the description)
b.rmdev -dl hdisk(#)'s
(Note the disks and remove them from the DM)
c.errclear 0
(Clear the AIX system error log)
d.cfgmgr -v
(Attempt to re-add the LUNZ disks)
e.lsdev -Cc disk | grep LUNZ
(Double check to make sure the LUNZ disk does not add itself back to the
system after the cfgmgr command)
f.errpt -a
(Monitor the AIX error log to insure the SCSI_DISK_ERR2's are gone)
Task Complete
Mark A. Koutsos
AIX/UNIX System Administrator
Visiting Nurse Service of New York
Mark.Koutsos@VNSNYRG
Phone: (212) 609-5415
Cellphone: (917) 903-2689
Fax: (212) 290-4777
Message
From: nlx6976 via ibm-aix-l [mailto:ibm-aix-l (AT) Groups (DOT) ITtoolbox.com]
Sent: Thursday, January 19, 2006 2:26 PM
To: Mark Koutsos
Subject: [ibm-aix-l] Re: SC_DISK_ERR2 with Fiber Storage CX-500 with P
55
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We down graded the FC firmware back to the old level and the problem
went away
1/19/06, twelve.elk via ibm-aix-l <ibm-aix-l (AT) groups (DOT) ittoolbox.com>
wrote:
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We had P690, P595, 671's all on Symmetrix, CX600, CX700, DMX3000 and
we saw these messages all the time. They are false positives caused
by IBM machines checking the health of it's hdisks. But the hdisks
presented via Powerpath are just I/ paths and so don't respond
thereby causing the error. This is an IBM bug, and I believe that
they have or are working on a
fix. Since I no longer work for the company I saw the issues on I
don't
know if it's out yet.
1/19/06, Clifton, Pablo via ibm-aix-l
<ibm-aix-l (AT) groups (DOT) ittoolbox.com>
wrote:
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We receive these errors on Clariion attached pSeries hosts everytime
we make a Zone change.
Message
From: braccos via ibm-aix-l [mailto:ibm-aix-l (AT) Groups (DOT) ITtoolbox.com]
Sent: Friday, January 13, 2006 9:19 AM
Subject: [ibm-aix-l] Re: SC_DISK_ERR2 with Fiber Storage CX-500 with
P 55
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We have a regatta (p690 and p570)
EMC CX500
No error at all
What I remember is that we installed the new firmware for the FC
interfaces to give the opportunity to boot from SAN (EMC/Shark).
If some one needs, I can check the firmware levels.
Stefano
>
>
>
Message
Received: Fri, 13 Jan 2006 03:13:34 PM CET
From: "nlx6976 via ibm-aix-l" <ibm-aix-l (AT) Groups (DOT) ITtoolbox.com>
To: braccos <braccos (AT) usa (DOT) net>
Subject: [ibm-aix-l] Re: SC_DISK_ERR2 with Fiber Storage CX-500 with
P 55
# Discover how to improve remote office WAN performance. # Read
this white paper:
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We have the same problem as well. EMC say its a firmware error on
the FC adapters.
1/13/06, Pascal R via ibm-aix-l
<ibm-aix-l (AT) groups (DOT) ittoolbox.com>
wrote:
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We got the same problems with pSeries&EMC
Can you give me the reference of the primus case? APAR?
Thank you,
Pascal.
Message
>I see these errors from time to time and we use a STK V2X2
>storage
array.
>We mark the errors as false positives.
>
Message
>From: d3funct via ibm-aix-l
>[mailto:ibm-aix-l (AT) Groups (DOT) ITtoolbox.com]
>Sent: Thu 5/12/2005 1:03 PM
>To: dsimmons
>Cc:
>Subject: [ibm-aix-l] RE: SC_DISK_ERR2 with Fiber Storage CX-500
>with P55
>
>
>
>
I have been trying to work through this problem for about a
>year and a half both SC_DISK_ERR2 and SC_DISK_ERR4 (on CX600
>and CX700) with
P-series
>Regatta's. I've been told by EMC that they are "false
>positives" errors thrown that are not actually errors. But I
>had them keep
working on it.
I received an e-mail from my EMC SE stating that these errors
are
due
to
>unresolved IBM issues, I've since lost the e-mail, but there is

>a Primus case he referenced which noted some APARs to be
>installed on
>
>the AIX
host.
I've had these issues with 4.3.3 through 5.2 AIX though the
Primus
case
>related only to 5.2 and 5.3 AIX, nothing earlier. Hope this
>helps.
>
Also,
I
>have a couple of 5.1 boxes that had this problem, I brought
>them up
>
>to
date
>by running and EMCgrab and having my SE run it through "HEAT"
>and
supplying
>me with the "HEAT" report which I used to ensure I was up to
>rev on
>
>all filesets, drivers and firmware. Since then I have not
>experienced the problem on this AIX 5.1 box.
>
If you have difficulty finding this primus case please reply
and I'll
get
>the info from my SE for you.
>
>
Message
Has anyone corrected this issue? SC_DISK_ERR2 with EMC
Powerpath =3D filesets listed below? I am using a
CX-500.=3D20 =20 =20 pbackup.vnsny.org:/# errpt -a | pg

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