To me it sounds like a protocol difference between the tape drive and
the HBA.
You probably have tried all of these, but you never know what will
trigger the "Oh yeah" moment.
1. Is it always the same drives?
2. Have you tried power cycling just a tape drive instead of the
library?
3. Are all of the HBA's in the same default mode? Fabric vs Arbitrated
Loop?
4. Do the HBA's show connected when the drive is defined?
5. Is there light on both ends when they are defined?
6. Have you tried using a switch to see if the results are the same?

Andy Huebner

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Lamb, Charles P.
Sent: Tuesday, February 26, 2008 4:13 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] LTO3 Tape Drives Unavailable on AIX

Hi..........

 

We have a TSM system (V5.3.4.2) on an IBM 9133-55A with 4-IBM 7311-D20
using FC5758 4GB FC PCI-X adapters.  All fourteen FC adapters are
connected directly with fourteen IBM LTO3 tape drives.  All firmware is
current - LTO3 --> 73P5, 3584 --> 7360.  Here is what is happening at my
site and wondering if anyone else is experiencing the same??

 

1) stopped TSM system

2) loaded Atape V11.0.2.0

3) loaded AIX V5.3 ML 7 SP 2  -- 77 filesets to be installed

4) re-booted server

5) half of the RMTXs and SMC0 went into defined mode and the others were
available

6) re-cycled IBM 3584 library

7) ran cfgmgr -v

8) All RMTXs and SMCXs are in the available state

9) Started TSM system

 

Anytime we need to re-boot the server, we need to run through steps #4 -
#8.  IBM p-series personnel came up with this process (PMR#13QJ2QQ),
however, power re-cycling of the IBM 3584 a good thing (?).


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