ADSM-L

Re: [ADSM-L] TS3500 firmware/hardware issues

2010-06-30 08:07:08
Subject: Re: [ADSM-L] TS3500 firmware/hardware issues
From: Richard Rhodes <rrhodes AT FIRSTENERGYCORP DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Wed, 30 Jun 2010 08:06:18 -0400
>
> 2.  I assume these are Fibre drives.  Even with experienced
> IBM CE's, like I have had, sometimes changing a drive, isn't "clean".
> If nor done just right, the WWN doesn't come up with the original one
> and they need t do it again.  If not then TSM does not see drive
> due to WWN doesn't match original drive.
>
> Do you have access to the SAN switches to look at that or good
> relationship with SAN team?  Investigate there.
>

We had this happen once when IBM replaced a drive. Also, if drives
are being replaced and wiring changed, you may have SAN errors.


You can compare:
   What the 3584 Specialist shows the wwn's to be
        Frame 1, Row 1    5005 0763 0F43 3501

   What the san switches show the logged on wwn's to be
       fab5-110   49  49   id    N4   Online  F-Port  500507630f433501

   What AIX has bound the RMT (lscfg -v)
       rmt274  U7311.D20.067A2EB-P1-C07-T1-W500507630F433501-L0  IBM 3592
Tape Drive (FCP)

   What AIX has bound the SMC dev to (lscfg -v) (for drive with lib path)
       smc8    U7311.D20.067A2FB-P1-C03-T1-W500507630F433501-L1000000000000
IBM 3584 Library Medium Changer (FCP)

I would also check for san errors.  For Brocade switches this is a
porterrshow cmd.
For AIX this is a fcstat cmd.
I don't know any way to check the library for san errors.
If your tape traffic crosses ISL links, check those links for errors.

I would especially check your drives that have the control path defined.

Of couse, none of this would cause your robot handling errors, but if the
wiring
is being played with and drives replaced, this is something to check.


Rick

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